1 | <?php |
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2 | // vim: set et ts=4 sw=4 fdm=marker: |
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3 | // +----------------------------------------------------------------------+ |
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4 | // | PHP versions 4 and 5 | |
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5 | // +----------------------------------------------------------------------+ |
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6 | // | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox, | |
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7 | // | Stig. S. Bakken, Lukas Smith | |
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8 | // | All rights reserved. | |
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9 | // +----------------------------------------------------------------------+ |
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10 | // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | |
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11 | // | API as well as database abstraction for PHP applications. | |
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12 | // | This LICENSE is in the BSD license style. | |
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13 | // | | |
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14 | // | Redistribution and use in source and binary forms, with or without | |
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15 | // | modification, are permitted provided that the following conditions | |
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16 | // | are met: | |
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17 | // | | |
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18 | // | Redistributions of source code must retain the above copyright | |
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19 | // | notice, this list of conditions and the following disclaimer. | |
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20 | // | | |
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21 | // | Redistributions in binary form must reproduce the above copyright | |
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22 | // | notice, this list of conditions and the following disclaimer in the | |
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23 | // | documentation and/or other materials provided with the distribution. | |
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24 | // | | |
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25 | // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | |
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26 | // | Lukas Smith nor the names of his contributors may be used to endorse | |
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27 | // | or promote products derived from this software without specific prior| |
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28 | // | written permission. | |
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29 | // | | |
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30 | // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
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31 | // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
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32 | // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
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33 | // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
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34 | // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
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35 | // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
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36 | // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| |
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37 | // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | |
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38 | // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
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39 | // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| |
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40 | // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
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41 | // | POSSIBILITY OF SUCH DAMAGE. | |
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42 | // +----------------------------------------------------------------------+ |
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43 | // | Author: Lukas Smith <smith@pooteeweet.org> | |
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44 | // +----------------------------------------------------------------------+ |
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45 | // |
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46 | // $Id: mysql.php 327320 2012-08-27 15:52:50Z danielc $ |
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47 | // |
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48 | |
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49 | /** |
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50 | * MDB2 MySQL driver |
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51 | * |
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52 | * @package MDB2 |
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53 | * @category Database |
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54 | * @author Lukas Smith <smith@pooteeweet.org> |
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55 | */ |
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56 | class MDB2_Driver_mysql extends MDB2_Driver_Common |
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57 | { |
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58 | // {{{ properties |
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59 | |
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60 | public $string_quoting = array( |
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61 | 'start' => "'", |
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62 | 'end' => "'", |
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63 | 'escape' => '\\', |
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64 | 'escape_pattern' => '\\', |
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65 | ); |
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66 | |
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67 | public $identifier_quoting = array( |
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68 | 'start' => '`', |
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69 | 'end' => '`', |
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70 | 'escape' => '`', |
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71 | ); |
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72 | |
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73 | public $sql_comments = array( |
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74 | array('start' => '-- ', 'end' => "\n", 'escape' => false), |
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75 | array('start' => '#', 'end' => "\n", 'escape' => false), |
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76 | array('start' => '/*', 'end' => '*/', 'escape' => false), |
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77 | ); |
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78 | |
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79 | protected $server_capabilities_checked = false; |
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80 | |
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81 | protected $start_transaction = false; |
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82 | |
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83 | public $varchar_max_length = 255; |
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84 | |
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85 | // }}} |
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86 | // {{{ constructor |
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87 | |
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88 | /** |
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89 | * Constructor |
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90 | */ |
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91 | function __construct() |
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92 | { |
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93 | parent::__construct(); |
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94 | |
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95 | $this->phptype = 'mysql'; |
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96 | $this->dbsyntax = 'mysql'; |
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97 | |
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98 | $this->supported['sequences'] = 'emulated'; |
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99 | $this->supported['indexes'] = true; |
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100 | $this->supported['affected_rows'] = true; |
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101 | $this->supported['transactions'] = false; |
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102 | $this->supported['savepoints'] = false; |
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103 | $this->supported['summary_functions'] = true; |
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104 | $this->supported['order_by_text'] = true; |
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105 | $this->supported['current_id'] = 'emulated'; |
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106 | $this->supported['limit_queries'] = true; |
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107 | $this->supported['LOBs'] = true; |
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108 | $this->supported['replace'] = true; |
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109 | $this->supported['sub_selects'] = 'emulated'; |
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110 | $this->supported['triggers'] = false; |
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111 | $this->supported['auto_increment'] = true; |
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112 | $this->supported['primary_key'] = true; |
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113 | $this->supported['result_introspection'] = true; |
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114 | $this->supported['prepared_statements'] = 'emulated'; |
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115 | $this->supported['identifier_quoting'] = true; |
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116 | $this->supported['pattern_escaping'] = true; |
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117 | $this->supported['new_link'] = true; |
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118 | |
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119 | $this->options['DBA_username'] = false; |
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120 | $this->options['DBA_password'] = false; |
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121 | $this->options['default_table_type'] = ''; |
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122 | $this->options['max_identifiers_length'] = 64; |
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123 | |
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124 | $this->_reCheckSupportedOptions(); |
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125 | } |
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126 | |
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127 | // }}} |
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128 | // {{{ _reCheckSupportedOptions() |
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129 | |
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130 | /** |
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131 | * If the user changes certain options, other capabilities may depend |
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132 | * on the new settings, so we need to check them (again). |
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133 | * |
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134 | * @access private |
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135 | */ |
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136 | function _reCheckSupportedOptions() |
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137 | { |
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138 | $this->supported['transactions'] = $this->options['use_transactions']; |
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139 | $this->supported['savepoints'] = $this->options['use_transactions']; |
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140 | if ($this->options['default_table_type']) { |
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141 | switch (strtoupper($this->options['default_table_type'])) { |
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142 | case 'BLACKHOLE': |
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143 | case 'MEMORY': |
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144 | case 'ARCHIVE': |
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145 | case 'CSV': |
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146 | case 'HEAP': |
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147 | case 'ISAM': |
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148 | case 'MERGE': |
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149 | case 'MRG_ISAM': |
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150 | case 'ISAM': |
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151 | case 'MRG_MYISAM': |
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152 | case 'MYISAM': |
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153 | $this->supported['savepoints'] = false; |
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154 | $this->supported['transactions'] = false; |
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155 | $this->warnings[] = $this->options['default_table_type'] . |
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156 | ' is not a supported default table type'; |
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157 | break; |
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158 | } |
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159 | } |
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160 | } |
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161 | |
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162 | // }}} |
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163 | // {{{ function setOption($option, $value) |
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164 | |
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165 | /** |
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166 | * set the option for the db class |
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167 | * |
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168 | * @param string option name |
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169 | * @param mixed value for the option |
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170 | * |
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171 | * @return mixed MDB2_OK or MDB2 Error Object |
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172 | * |
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173 | * @access public |
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174 | */ |
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175 | function setOption($option, $value) |
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176 | { |
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177 | $res = parent::setOption($option, $value); |
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178 | $this->_reCheckSupportedOptions(); |
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179 | } |
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180 | |
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181 | // }}} |
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182 | // {{{ errorInfo() |
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183 | |
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184 | /** |
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185 | * This method is used to collect information about an error |
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186 | * |
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187 | * @param integer $error |
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188 | * @return array |
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189 | * @access public |
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190 | */ |
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191 | function errorInfo($error = null) |
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192 | { |
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193 | if ($this->connection) { |
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194 | $native_code = @mysql_errno($this->connection); |
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195 | $native_msg = @mysql_error($this->connection); |
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196 | } else { |
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197 | $native_code = @mysql_errno(); |
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198 | $native_msg = @mysql_error(); |
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199 | } |
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200 | if (is_null($error)) { |
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201 | static $ecode_map; |
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202 | if (empty($ecode_map)) { |
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203 | $ecode_map = array( |
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204 | 1000 => MDB2_ERROR_INVALID, //hashchk |
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205 | 1001 => MDB2_ERROR_INVALID, //isamchk |
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206 | 1004 => MDB2_ERROR_CANNOT_CREATE, |
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207 | 1005 => MDB2_ERROR_CANNOT_CREATE, |
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208 | 1006 => MDB2_ERROR_CANNOT_CREATE, |
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209 | 1007 => MDB2_ERROR_ALREADY_EXISTS, |
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210 | 1008 => MDB2_ERROR_CANNOT_DROP, |
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211 | 1009 => MDB2_ERROR_CANNOT_DROP, |
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212 | 1010 => MDB2_ERROR_CANNOT_DROP, |
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213 | 1011 => MDB2_ERROR_CANNOT_DELETE, |
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214 | 1022 => MDB2_ERROR_ALREADY_EXISTS, |
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215 | 1029 => MDB2_ERROR_NOT_FOUND, |
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216 | 1032 => MDB2_ERROR_NOT_FOUND, |
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217 | 1044 => MDB2_ERROR_ACCESS_VIOLATION, |
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218 | 1045 => MDB2_ERROR_ACCESS_VIOLATION, |
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219 | 1046 => MDB2_ERROR_NODBSELECTED, |
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220 | 1048 => MDB2_ERROR_CONSTRAINT, |
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221 | 1049 => MDB2_ERROR_NOSUCHDB, |
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222 | 1050 => MDB2_ERROR_ALREADY_EXISTS, |
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223 | 1051 => MDB2_ERROR_NOSUCHTABLE, |
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224 | 1054 => MDB2_ERROR_NOSUCHFIELD, |
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225 | 1060 => MDB2_ERROR_ALREADY_EXISTS, |
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226 | 1061 => MDB2_ERROR_ALREADY_EXISTS, |
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227 | 1062 => MDB2_ERROR_ALREADY_EXISTS, |
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228 | 1064 => MDB2_ERROR_SYNTAX, |
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229 | 1067 => MDB2_ERROR_INVALID, |
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230 | 1072 => MDB2_ERROR_NOT_FOUND, |
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231 | 1086 => MDB2_ERROR_ALREADY_EXISTS, |
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232 | 1091 => MDB2_ERROR_NOT_FOUND, |
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233 | 1100 => MDB2_ERROR_NOT_LOCKED, |
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234 | 1109 => MDB2_ERROR_NOT_FOUND, |
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235 | 1125 => MDB2_ERROR_ALREADY_EXISTS, |
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236 | 1136 => MDB2_ERROR_VALUE_COUNT_ON_ROW, |
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237 | 1138 => MDB2_ERROR_INVALID, |
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238 | 1142 => MDB2_ERROR_ACCESS_VIOLATION, |
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239 | 1143 => MDB2_ERROR_ACCESS_VIOLATION, |
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240 | 1146 => MDB2_ERROR_NOSUCHTABLE, |
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241 | 1149 => MDB2_ERROR_SYNTAX, |
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242 | 1169 => MDB2_ERROR_CONSTRAINT, |
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243 | 1176 => MDB2_ERROR_NOT_FOUND, |
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244 | 1177 => MDB2_ERROR_NOSUCHTABLE, |
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245 | 1213 => MDB2_ERROR_DEADLOCK, |
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246 | 1216 => MDB2_ERROR_CONSTRAINT, |
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247 | 1217 => MDB2_ERROR_CONSTRAINT, |
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248 | 1227 => MDB2_ERROR_ACCESS_VIOLATION, |
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249 | 1235 => MDB2_ERROR_CANNOT_CREATE, |
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250 | 1299 => MDB2_ERROR_INVALID_DATE, |
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251 | 1300 => MDB2_ERROR_INVALID, |
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252 | 1304 => MDB2_ERROR_ALREADY_EXISTS, |
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253 | 1305 => MDB2_ERROR_NOT_FOUND, |
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254 | 1306 => MDB2_ERROR_CANNOT_DROP, |
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255 | 1307 => MDB2_ERROR_CANNOT_CREATE, |
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256 | 1334 => MDB2_ERROR_CANNOT_ALTER, |
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257 | 1339 => MDB2_ERROR_NOT_FOUND, |
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258 | 1356 => MDB2_ERROR_INVALID, |
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259 | 1359 => MDB2_ERROR_ALREADY_EXISTS, |
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260 | 1360 => MDB2_ERROR_NOT_FOUND, |
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261 | 1363 => MDB2_ERROR_NOT_FOUND, |
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262 | 1365 => MDB2_ERROR_DIVZERO, |
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263 | 1451 => MDB2_ERROR_CONSTRAINT, |
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264 | 1452 => MDB2_ERROR_CONSTRAINT, |
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265 | 1542 => MDB2_ERROR_CANNOT_DROP, |
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266 | 1546 => MDB2_ERROR_CONSTRAINT, |
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267 | 1582 => MDB2_ERROR_CONSTRAINT, |
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268 | 2003 => MDB2_ERROR_CONNECT_FAILED, |
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269 | 2019 => MDB2_ERROR_INVALID, |
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270 | ); |
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271 | } |
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272 | if ($this->options['portability'] & MDB2_PORTABILITY_ERRORS) { |
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273 | $ecode_map[1022] = MDB2_ERROR_CONSTRAINT; |
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274 | $ecode_map[1048] = MDB2_ERROR_CONSTRAINT_NOT_NULL; |
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275 | $ecode_map[1062] = MDB2_ERROR_CONSTRAINT; |
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276 | } else { |
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277 | // Doing this in case mode changes during runtime. |
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278 | $ecode_map[1022] = MDB2_ERROR_ALREADY_EXISTS; |
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279 | $ecode_map[1048] = MDB2_ERROR_CONSTRAINT; |
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280 | $ecode_map[1062] = MDB2_ERROR_ALREADY_EXISTS; |
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281 | } |
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282 | if (isset($ecode_map[$native_code])) { |
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283 | $error = $ecode_map[$native_code]; |
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284 | } |
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285 | } |
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286 | return array($error, $native_code, $native_msg); |
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287 | } |
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288 | |
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289 | // }}} |
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290 | // {{{ escape() |
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291 | |
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292 | /** |
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293 | * Quotes a string so it can be safely used in a query. It will quote |
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294 | * the text so it can safely be used within a query. |
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295 | * |
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296 | * @param string the input string to quote |
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297 | * @param bool escape wildcards |
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298 | * |
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299 | * @return string quoted string |
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300 | * |
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301 | * @access public |
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302 | */ |
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303 | function escape($text, $escape_wildcards = false) |
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304 | { |
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305 | if ($escape_wildcards) { |
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306 | $text = $this->escapePattern($text); |
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307 | } |
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308 | $connection = $this->getConnection(); |
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309 | if (MDB2::isError($connection)) { |
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310 | return $connection; |
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311 | } |
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312 | $text = @mysql_real_escape_string($text, $connection); |
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313 | return $text; |
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314 | } |
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315 | |
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316 | // }}} |
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317 | // {{{ beginTransaction() |
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318 | |
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319 | /** |
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320 | * Start a transaction or set a savepoint. |
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321 | * |
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322 | * @param string name of a savepoint to set |
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323 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
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324 | * |
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325 | * @access public |
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326 | */ |
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327 | function beginTransaction($savepoint = null) |
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328 | { |
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329 | $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); |
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330 | $this->_getServerCapabilities(); |
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331 | if (!is_null($savepoint)) { |
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332 | if (!$this->supports('savepoints')) { |
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333 | return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, |
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334 | 'savepoints are not supported', __FUNCTION__); |
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335 | } |
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336 | if (!$this->in_transaction) { |
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337 | return $this->raiseError(MDB2_ERROR_INVALID, null, null, |
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338 | 'savepoint cannot be released when changes are auto committed', __FUNCTION__); |
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339 | } |
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340 | $query = 'SAVEPOINT '.$savepoint; |
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341 | return $this->_doQuery($query, true); |
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342 | } elseif ($this->in_transaction) { |
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343 | return MDB2_OK; //nothing to do |
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344 | } |
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345 | if (!$this->destructor_registered && $this->opened_persistent) { |
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346 | $this->destructor_registered = true; |
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347 | register_shutdown_function('MDB2_closeOpenTransactions'); |
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348 | } |
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349 | $query = $this->start_transaction ? 'START TRANSACTION' : 'SET AUTOCOMMIT = 0'; |
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350 | $result = $this->_doQuery($query, true); |
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351 | if (MDB2::isError($result)) { |
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352 | return $result; |
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353 | } |
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354 | $this->in_transaction = true; |
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355 | return MDB2_OK; |
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356 | } |
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357 | |
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358 | // }}} |
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359 | // {{{ commit() |
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360 | |
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361 | /** |
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362 | * Commit the database changes done during a transaction that is in |
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363 | * progress or release a savepoint. This function may only be called when |
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364 | * auto-committing is disabled, otherwise it will fail. Therefore, a new |
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365 | * transaction is implicitly started after committing the pending changes. |
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366 | * |
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367 | * @param string name of a savepoint to release |
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368 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
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369 | * |
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370 | * @access public |
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371 | */ |
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372 | function commit($savepoint = null) |
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373 | { |
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374 | $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); |
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375 | if (!$this->in_transaction) { |
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376 | return $this->raiseError(MDB2_ERROR_INVALID, null, null, |
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377 | 'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__); |
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378 | } |
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379 | if (!is_null($savepoint)) { |
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380 | if (!$this->supports('savepoints')) { |
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381 | return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, |
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382 | 'savepoints are not supported', __FUNCTION__); |
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383 | } |
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384 | $server_info = $this->getServerVersion(); |
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385 | if (version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '5.0.3', '<')) { |
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386 | return MDB2_OK; |
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387 | } |
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388 | $query = 'RELEASE SAVEPOINT '.$savepoint; |
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389 | return $this->_doQuery($query, true); |
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390 | } |
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391 | |
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392 | if (!$this->supports('transactions')) { |
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393 | return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, |
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394 | 'transactions are not supported', __FUNCTION__); |
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395 | } |
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396 | |
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397 | $result = $this->_doQuery('COMMIT', true); |
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398 | if (MDB2::isError($result)) { |
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399 | return $result; |
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400 | } |
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401 | if (!$this->start_transaction) { |
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402 | $query = 'SET AUTOCOMMIT = 1'; |
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403 | $result = $this->_doQuery($query, true); |
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404 | if (MDB2::isError($result)) { |
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405 | return $result; |
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406 | } |
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407 | } |
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408 | $this->in_transaction = false; |
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409 | return MDB2_OK; |
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410 | } |
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411 | |
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412 | // }}} |
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413 | // {{{ rollback() |
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414 | |
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415 | /** |
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416 | * Cancel any database changes done during a transaction or since a specific |
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417 | * savepoint that is in progress. This function may only be called when |
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418 | * auto-committing is disabled, otherwise it will fail. Therefore, a new |
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419 | * transaction is implicitly started after canceling the pending changes. |
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420 | * |
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421 | * @param string name of a savepoint to rollback to |
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422 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
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423 | * |
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424 | * @access public |
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425 | */ |
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426 | function rollback($savepoint = null) |
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427 | { |
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428 | $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); |
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429 | if (!$this->in_transaction) { |
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430 | return $this->raiseError(MDB2_ERROR_INVALID, null, null, |
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431 | 'rollback cannot be done changes are auto committed', __FUNCTION__); |
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432 | } |
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433 | if (!is_null($savepoint)) { |
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434 | if (!$this->supports('savepoints')) { |
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435 | return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, |
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436 | 'savepoints are not supported', __FUNCTION__); |
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437 | } |
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438 | $query = 'ROLLBACK TO SAVEPOINT '.$savepoint; |
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439 | return $this->_doQuery($query, true); |
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440 | } |
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441 | |
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442 | $query = 'ROLLBACK'; |
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443 | $result = $this->_doQuery($query, true); |
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444 | if (MDB2::isError($result)) { |
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445 | return $result; |
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446 | } |
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447 | if (!$this->start_transaction) { |
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448 | $query = 'SET AUTOCOMMIT = 1'; |
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449 | $result = $this->_doQuery($query, true); |
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450 | if (MDB2::isError($result)) { |
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451 | return $result; |
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452 | } |
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453 | } |
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454 | $this->in_transaction = false; |
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455 | return MDB2_OK; |
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456 | } |
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457 | |
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458 | // }}} |
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459 | // {{{ function setTransactionIsolation() |
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460 | |
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461 | /** |
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462 | * Set the transacton isolation level. |
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463 | * |
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464 | * @param string standard isolation level |
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465 | * READ UNCOMMITTED (allows dirty reads) |
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466 | * READ COMMITTED (prevents dirty reads) |
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467 | * REPEATABLE READ (prevents nonrepeatable reads) |
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468 | * SERIALIZABLE (prevents phantom reads) |
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469 | * @param array some transaction options: |
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470 | * 'wait' => 'WAIT' | 'NO WAIT' |
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471 | * 'rw' => 'READ WRITE' | 'READ ONLY' |
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472 | * |
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473 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
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474 | * |
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475 | * @access public |
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476 | * @since 2.1.1 |
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477 | */ |
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478 | function setTransactionIsolation($isolation, $options = array()) |
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479 | { |
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480 | $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true)); |
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481 | if (!$this->supports('transactions')) { |
---|
482 | return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, |
---|
483 | 'transactions are not supported', __FUNCTION__); |
---|
484 | } |
---|
485 | switch ($isolation) { |
---|
486 | case 'READ UNCOMMITTED': |
---|
487 | case 'READ COMMITTED': |
---|
488 | case 'REPEATABLE READ': |
---|
489 | case 'SERIALIZABLE': |
---|
490 | break; |
---|
491 | default: |
---|
492 | return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, |
---|
493 | 'isolation level is not supported: '.$isolation, __FUNCTION__); |
---|
494 | } |
---|
495 | |
---|
496 | $query = "SET SESSION TRANSACTION ISOLATION LEVEL $isolation"; |
---|
497 | return $this->_doQuery($query, true); |
---|
498 | } |
---|
499 | |
---|
500 | // }}} |
---|
501 | // {{{ _doConnect() |
---|
502 | |
---|
503 | /** |
---|
504 | * do the grunt work of the connect |
---|
505 | * |
---|
506 | * @return connection on success or MDB2 Error Object on failure |
---|
507 | * @access protected |
---|
508 | */ |
---|
509 | function _doConnect($username, $password, $persistent = false) |
---|
510 | { |
---|
511 | if (!extension_loaded($this->phptype)) { |
---|
512 | return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, |
---|
513 | 'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__); |
---|
514 | } |
---|
515 | |
---|
516 | $params = array(); |
---|
517 | $unix = ($this->dsn['protocol'] && $this->dsn['protocol'] == 'unix'); |
---|
518 | if (empty($this->dsn['hostspec'])) { |
---|
519 | $this->dsn['hostspec'] = $unix ? '' : 'localhost'; |
---|
520 | } |
---|
521 | if ($this->dsn['hostspec']) { |
---|
522 | $params[0] = $this->dsn['hostspec'] . ($this->dsn['port'] ? ':' . $this->dsn['port'] : ''); |
---|
523 | } else { |
---|
524 | $params[0] = ':' . $this->dsn['socket']; |
---|
525 | } |
---|
526 | $params[] = $username ? $username : null; |
---|
527 | $params[] = $password ? $password : null; |
---|
528 | if (!$persistent) { |
---|
529 | if ($this->_isNewLinkSet()) { |
---|
530 | $params[] = true; |
---|
531 | } else { |
---|
532 | $params[] = false; |
---|
533 | } |
---|
534 | } |
---|
535 | if (version_compare(phpversion(), '4.3.0', '>=')) { |
---|
536 | $params[] = isset($this->dsn['client_flags']) |
---|
537 | ? $this->dsn['client_flags'] : null; |
---|
538 | } |
---|
539 | $connect_function = $persistent ? 'mysql_pconnect' : 'mysql_connect'; |
---|
540 | |
---|
541 | $connection = @call_user_func_array($connect_function, $params); |
---|
542 | if (!$connection) { |
---|
543 | if (($err = @mysql_error()) != '') { |
---|
544 | return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null, |
---|
545 | $err, __FUNCTION__); |
---|
546 | } else { |
---|
547 | return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null, |
---|
548 | 'unable to establish a connection', __FUNCTION__); |
---|
549 | } |
---|
550 | } |
---|
551 | |
---|
552 | if (!empty($this->dsn['charset'])) { |
---|
553 | $result = $this->setCharset($this->dsn['charset'], $connection); |
---|
554 | if (MDB2::isError($result)) { |
---|
555 | $this->disconnect(false); |
---|
556 | return $result; |
---|
557 | } |
---|
558 | } |
---|
559 | |
---|
560 | return $connection; |
---|
561 | } |
---|
562 | |
---|
563 | // }}} |
---|
564 | // {{{ connect() |
---|
565 | |
---|
566 | /** |
---|
567 | * Connect to the database |
---|
568 | * |
---|
569 | * @return MDB2_OK on success, MDB2 Error Object on failure |
---|
570 | * @access public |
---|
571 | */ |
---|
572 | function connect() |
---|
573 | { |
---|
574 | if (is_resource($this->connection)) { |
---|
575 | //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0 |
---|
576 | if (MDB2::areEquals($this->connected_dsn, $this->dsn) |
---|
577 | && $this->opened_persistent == $this->options['persistent'] |
---|
578 | ) { |
---|
579 | return MDB2_OK; |
---|
580 | } |
---|
581 | $this->disconnect(false); |
---|
582 | } |
---|
583 | |
---|
584 | $connection = $this->_doConnect( |
---|
585 | $this->dsn['username'], |
---|
586 | $this->dsn['password'], |
---|
587 | $this->options['persistent'] |
---|
588 | ); |
---|
589 | if (MDB2::isError($connection)) { |
---|
590 | return $connection; |
---|
591 | } |
---|
592 | |
---|
593 | $this->connection = $connection; |
---|
594 | $this->connected_dsn = $this->dsn; |
---|
595 | $this->connected_database_name = ''; |
---|
596 | $this->opened_persistent = $this->options['persistent']; |
---|
597 | $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype; |
---|
598 | |
---|
599 | if ($this->database_name) { |
---|
600 | if ($this->database_name != $this->connected_database_name) { |
---|
601 | if (!@mysql_select_db($this->database_name, $connection)) { |
---|
602 | $err = $this->raiseError(null, null, null, |
---|
603 | 'Could not select the database: '.$this->database_name, __FUNCTION__); |
---|
604 | return $err; |
---|
605 | } |
---|
606 | $this->connected_database_name = $this->database_name; |
---|
607 | } |
---|
608 | } |
---|
609 | |
---|
610 | $this->_getServerCapabilities(); |
---|
611 | |
---|
612 | return MDB2_OK; |
---|
613 | } |
---|
614 | |
---|
615 | // }}} |
---|
616 | // {{{ setCharset() |
---|
617 | |
---|
618 | /** |
---|
619 | * Set the charset on the current connection |
---|
620 | * |
---|
621 | * @param string charset (or array(charset, collation)) |
---|
622 | * @param resource connection handle |
---|
623 | * |
---|
624 | * @return true on success, MDB2 Error Object on failure |
---|
625 | */ |
---|
626 | function setCharset($charset, $connection = null) |
---|
627 | { |
---|
628 | if (is_null($connection)) { |
---|
629 | $connection = $this->getConnection(); |
---|
630 | if (MDB2::isError($connection)) { |
---|
631 | return $connection; |
---|
632 | } |
---|
633 | } |
---|
634 | $collation = null; |
---|
635 | if (is_array($charset) && 2 == count($charset)) { |
---|
636 | $collation = array_pop($charset); |
---|
637 | $charset = array_pop($charset); |
---|
638 | } |
---|
639 | $client_info = mysql_get_client_info(); |
---|
640 | if (function_exists('mysql_set_charset') && version_compare($client_info, '5.0.6')) { |
---|
641 | if (!$result = mysql_set_charset($charset, $connection)) { |
---|
642 | $err = $this->raiseError(null, null, null, |
---|
643 | 'Could not set client character set', __FUNCTION__); |
---|
644 | return $err; |
---|
645 | } |
---|
646 | return $result; |
---|
647 | } |
---|
648 | $query = "SET NAMES '".mysql_real_escape_string($charset, $connection)."'"; |
---|
649 | if (!is_null($collation)) { |
---|
650 | $query .= " COLLATE '".mysql_real_escape_string($collation, $connection)."'"; |
---|
651 | } |
---|
652 | return $this->_doQuery($query, true, $connection); |
---|
653 | } |
---|
654 | |
---|
655 | // }}} |
---|
656 | // {{{ databaseExists() |
---|
657 | |
---|
658 | /** |
---|
659 | * check if given database name is exists? |
---|
660 | * |
---|
661 | * @param string $name name of the database that should be checked |
---|
662 | * |
---|
663 | * @return mixed true/false on success, a MDB2 error on failure |
---|
664 | * @access public |
---|
665 | */ |
---|
666 | function databaseExists($name) |
---|
667 | { |
---|
668 | $connection = $this->_doConnect($this->dsn['username'], |
---|
669 | $this->dsn['password'], |
---|
670 | $this->options['persistent']); |
---|
671 | if (MDB2::isError($connection)) { |
---|
672 | return $connection; |
---|
673 | } |
---|
674 | |
---|
675 | $result = @mysql_select_db($name, $connection); |
---|
676 | @mysql_close($connection); |
---|
677 | |
---|
678 | return $result; |
---|
679 | } |
---|
680 | |
---|
681 | // }}} |
---|
682 | // {{{ disconnect() |
---|
683 | |
---|
684 | /** |
---|
685 | * Log out and disconnect from the database. |
---|
686 | * |
---|
687 | * @param boolean $force if the disconnect should be forced even if the |
---|
688 | * connection is opened persistently |
---|
689 | * @return mixed true on success, false if not connected and error |
---|
690 | * object on error |
---|
691 | * @access public |
---|
692 | */ |
---|
693 | function disconnect($force = true) |
---|
694 | { |
---|
695 | if (is_resource($this->connection)) { |
---|
696 | if ($this->in_transaction) { |
---|
697 | $dsn = $this->dsn; |
---|
698 | $database_name = $this->database_name; |
---|
699 | $persistent = $this->options['persistent']; |
---|
700 | $this->dsn = $this->connected_dsn; |
---|
701 | $this->database_name = $this->connected_database_name; |
---|
702 | $this->options['persistent'] = $this->opened_persistent; |
---|
703 | $this->rollback(); |
---|
704 | $this->dsn = $dsn; |
---|
705 | $this->database_name = $database_name; |
---|
706 | $this->options['persistent'] = $persistent; |
---|
707 | } |
---|
708 | |
---|
709 | if (!$this->opened_persistent || $force) { |
---|
710 | $ok = @mysql_close($this->connection); |
---|
711 | if (!$ok) { |
---|
712 | return $this->raiseError(MDB2_ERROR_DISCONNECT_FAILED, |
---|
713 | null, null, null, __FUNCTION__); |
---|
714 | } |
---|
715 | } |
---|
716 | } else { |
---|
717 | return false; |
---|
718 | } |
---|
719 | return parent::disconnect($force); |
---|
720 | } |
---|
721 | |
---|
722 | // }}} |
---|
723 | // {{{ standaloneQuery() |
---|
724 | |
---|
725 | /** |
---|
726 | * execute a query as DBA |
---|
727 | * |
---|
728 | * @param string $query the SQL query |
---|
729 | * @param mixed $types array that contains the types of the columns in |
---|
730 | * the result set |
---|
731 | * @param boolean $is_manip if the query is a manipulation query |
---|
732 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
---|
733 | * @access public |
---|
734 | */ |
---|
735 | function standaloneQuery($query, $types = null, $is_manip = false) |
---|
736 | { |
---|
737 | $user = $this->options['DBA_username']? $this->options['DBA_username'] : $this->dsn['username']; |
---|
738 | $pass = $this->options['DBA_password']? $this->options['DBA_password'] : $this->dsn['password']; |
---|
739 | $connection = $this->_doConnect($user, $pass, $this->options['persistent']); |
---|
740 | if (MDB2::isError($connection)) { |
---|
741 | return $connection; |
---|
742 | } |
---|
743 | |
---|
744 | $offset = $this->offset; |
---|
745 | $limit = $this->limit; |
---|
746 | $this->offset = $this->limit = 0; |
---|
747 | $query = $this->_modifyQuery($query, $is_manip, $limit, $offset); |
---|
748 | |
---|
749 | $result = $this->_doQuery($query, $is_manip, $connection, $this->database_name); |
---|
750 | if (!MDB2::isError($result)) { |
---|
751 | $result = $this->_affectedRows($connection, $result); |
---|
752 | } |
---|
753 | |
---|
754 | @mysql_close($connection); |
---|
755 | return $result; |
---|
756 | } |
---|
757 | |
---|
758 | // }}} |
---|
759 | // {{{ _doQuery() |
---|
760 | |
---|
761 | /** |
---|
762 | * Execute a query |
---|
763 | * @param string $query query |
---|
764 | * @param boolean $is_manip if the query is a manipulation query |
---|
765 | * @param resource $connection |
---|
766 | * @param string $database_name |
---|
767 | * @return result or error object |
---|
768 | * @access protected |
---|
769 | */ |
---|
770 | function _doQuery($query, $is_manip = false, $connection = null, $database_name = null) |
---|
771 | { |
---|
772 | $this->last_query = $query; |
---|
773 | $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre')); |
---|
774 | if ($result) { |
---|
775 | if (MDB2::isError($result)) { |
---|
776 | return $result; |
---|
777 | } |
---|
778 | $query = $result; |
---|
779 | } |
---|
780 | if ($this->options['disable_query']) { |
---|
781 | $result = $is_manip ? 0 : null; |
---|
782 | return $result; |
---|
783 | } |
---|
784 | |
---|
785 | if (is_null($connection)) { |
---|
786 | $connection = $this->getConnection(); |
---|
787 | if (MDB2::isError($connection)) { |
---|
788 | return $connection; |
---|
789 | } |
---|
790 | } |
---|
791 | if (is_null($database_name)) { |
---|
792 | $database_name = $this->database_name; |
---|
793 | } |
---|
794 | |
---|
795 | if ($database_name) { |
---|
796 | if ($database_name != $this->connected_database_name) { |
---|
797 | if (!@mysql_select_db($database_name, $connection)) { |
---|
798 | $err = $this->raiseError(null, null, null, |
---|
799 | 'Could not select the database: '.$database_name, __FUNCTION__); |
---|
800 | return $err; |
---|
801 | } |
---|
802 | $this->connected_database_name = $database_name; |
---|
803 | } |
---|
804 | } |
---|
805 | |
---|
806 | $function = $this->options['result_buffering'] |
---|
807 | ? 'mysql_query' : 'mysql_unbuffered_query'; |
---|
808 | $result = @$function($query, $connection); |
---|
809 | if (!$result && 0 !== mysql_errno($connection)) { |
---|
810 | $err = $this->raiseError(null, null, null, |
---|
811 | 'Could not execute statement', __FUNCTION__); |
---|
812 | return $err; |
---|
813 | } |
---|
814 | |
---|
815 | $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result)); |
---|
816 | return $result; |
---|
817 | } |
---|
818 | |
---|
819 | // }}} |
---|
820 | // {{{ _affectedRows() |
---|
821 | |
---|
822 | /** |
---|
823 | * Returns the number of rows affected |
---|
824 | * |
---|
825 | * @param resource $result |
---|
826 | * @param resource $connection |
---|
827 | * @return mixed MDB2 Error Object or the number of rows affected |
---|
828 | * @access private |
---|
829 | */ |
---|
830 | function _affectedRows($connection, $result = null) |
---|
831 | { |
---|
832 | if (is_null($connection)) { |
---|
833 | $connection = $this->getConnection(); |
---|
834 | if (MDB2::isError($connection)) { |
---|
835 | return $connection; |
---|
836 | } |
---|
837 | } |
---|
838 | return @mysql_affected_rows($connection); |
---|
839 | } |
---|
840 | |
---|
841 | // }}} |
---|
842 | // {{{ _modifyQuery() |
---|
843 | |
---|
844 | /** |
---|
845 | * Changes a query string for various DBMS specific reasons |
---|
846 | * |
---|
847 | * @param string $query query to modify |
---|
848 | * @param boolean $is_manip if it is a DML query |
---|
849 | * @param integer $limit limit the number of rows |
---|
850 | * @param integer $offset start reading from given offset |
---|
851 | * @return string modified query |
---|
852 | * @access protected |
---|
853 | */ |
---|
854 | function _modifyQuery($query, $is_manip, $limit, $offset) |
---|
855 | { |
---|
856 | if ($this->options['portability'] & MDB2_PORTABILITY_DELETE_COUNT) { |
---|
857 | // "DELETE FROM table" gives 0 affected rows in MySQL. |
---|
858 | // This little hack lets you know how many rows were deleted. |
---|
859 | if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) { |
---|
860 | $query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/', |
---|
861 | 'DELETE FROM \1 WHERE 1=1', $query); |
---|
862 | } |
---|
863 | } |
---|
864 | if ($limit > 0 |
---|
865 | && !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query) |
---|
866 | ) { |
---|
867 | $query = rtrim($query); |
---|
868 | if (substr($query, -1) == ';') { |
---|
869 | $query = substr($query, 0, -1); |
---|
870 | } |
---|
871 | |
---|
872 | // LIMIT doesn't always come last in the query |
---|
873 | // @see http://dev.mysql.com/doc/refman/5.0/en/select.html |
---|
874 | $after = ''; |
---|
875 | if (preg_match('/(\s+INTO\s+(?:OUT|DUMP)FILE\s.*)$/ims', $query, $matches)) { |
---|
876 | $after = $matches[0]; |
---|
877 | $query = preg_replace('/(\s+INTO\s+(?:OUT|DUMP)FILE\s.*)$/ims', '', $query); |
---|
878 | } elseif (preg_match('/(\s+FOR\s+UPDATE\s*)$/i', $query, $matches)) { |
---|
879 | $after = $matches[0]; |
---|
880 | $query = preg_replace('/(\s+FOR\s+UPDATE\s*)$/im', '', $query); |
---|
881 | } elseif (preg_match('/(\s+LOCK\s+IN\s+SHARE\s+MODE\s*)$/im', $query, $matches)) { |
---|
882 | $after = $matches[0]; |
---|
883 | $query = preg_replace('/(\s+LOCK\s+IN\s+SHARE\s+MODE\s*)$/im', '', $query); |
---|
884 | } |
---|
885 | |
---|
886 | if ($is_manip) { |
---|
887 | return $query . " LIMIT $limit" . $after; |
---|
888 | } else { |
---|
889 | return $query . " LIMIT $offset, $limit" . $after; |
---|
890 | } |
---|
891 | } |
---|
892 | return $query; |
---|
893 | } |
---|
894 | |
---|
895 | // }}} |
---|
896 | // {{{ getServerVersion() |
---|
897 | |
---|
898 | /** |
---|
899 | * return version information about the server |
---|
900 | * |
---|
901 | * @param bool $native determines if the raw version string should be returned |
---|
902 | * @return mixed array/string with version information or MDB2 error object |
---|
903 | * @access public |
---|
904 | */ |
---|
905 | function getServerVersion($native = false) |
---|
906 | { |
---|
907 | $connection = $this->getConnection(); |
---|
908 | if (MDB2::isError($connection)) { |
---|
909 | return $connection; |
---|
910 | } |
---|
911 | if ($this->connected_server_info) { |
---|
912 | $server_info = $this->connected_server_info; |
---|
913 | } else { |
---|
914 | $server_info = @mysql_get_server_info($connection); |
---|
915 | } |
---|
916 | if (!$server_info) { |
---|
917 | return $this->raiseError(null, null, null, |
---|
918 | 'Could not get server information', __FUNCTION__); |
---|
919 | } |
---|
920 | // cache server_info |
---|
921 | $this->connected_server_info = $server_info; |
---|
922 | if (!$native) { |
---|
923 | $tmp = explode('.', $server_info, 3); |
---|
924 | if (isset($tmp[2]) && strpos($tmp[2], '-')) { |
---|
925 | $tmp2 = explode('-', @$tmp[2], 2); |
---|
926 | } else { |
---|
927 | $tmp2[0] = isset($tmp[2]) ? $tmp[2] : null; |
---|
928 | $tmp2[1] = null; |
---|
929 | } |
---|
930 | $server_info = array( |
---|
931 | 'major' => isset($tmp[0]) ? $tmp[0] : null, |
---|
932 | 'minor' => isset($tmp[1]) ? $tmp[1] : null, |
---|
933 | 'patch' => $tmp2[0], |
---|
934 | 'extra' => $tmp2[1], |
---|
935 | 'native' => $server_info, |
---|
936 | ); |
---|
937 | } |
---|
938 | return $server_info; |
---|
939 | } |
---|
940 | |
---|
941 | // }}} |
---|
942 | // {{{ _getServerCapabilities() |
---|
943 | |
---|
944 | /** |
---|
945 | * Fetch some information about the server capabilities |
---|
946 | * (transactions, subselects, prepared statements, etc). |
---|
947 | * |
---|
948 | * @access private |
---|
949 | */ |
---|
950 | function _getServerCapabilities() |
---|
951 | { |
---|
952 | if (!$this->server_capabilities_checked) { |
---|
953 | $this->server_capabilities_checked = true; |
---|
954 | |
---|
955 | //set defaults |
---|
956 | $this->supported['sub_selects'] = 'emulated'; |
---|
957 | $this->supported['prepared_statements'] = 'emulated'; |
---|
958 | $this->supported['triggers'] = false; |
---|
959 | $this->start_transaction = false; |
---|
960 | $this->varchar_max_length = 255; |
---|
961 | |
---|
962 | $server_info = $this->getServerVersion(); |
---|
963 | if (is_array($server_info)) { |
---|
964 | $server_version = $server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch']; |
---|
965 | |
---|
966 | if (!version_compare($server_version, '4.1.0', '<')) { |
---|
967 | $this->supported['sub_selects'] = true; |
---|
968 | $this->supported['prepared_statements'] = true; |
---|
969 | } |
---|
970 | |
---|
971 | // SAVEPOINTs were introduced in MySQL 4.0.14 and 4.1.1 (InnoDB) |
---|
972 | if (version_compare($server_version, '4.1.0', '>=')) { |
---|
973 | if (version_compare($server_version, '4.1.1', '<')) { |
---|
974 | $this->supported['savepoints'] = false; |
---|
975 | } |
---|
976 | } elseif (version_compare($server_version, '4.0.14', '<')) { |
---|
977 | $this->supported['savepoints'] = false; |
---|
978 | } |
---|
979 | |
---|
980 | if (!version_compare($server_version, '4.0.11', '<')) { |
---|
981 | $this->start_transaction = true; |
---|
982 | } |
---|
983 | |
---|
984 | if (!version_compare($server_version, '5.0.3', '<')) { |
---|
985 | $this->varchar_max_length = 65532; |
---|
986 | } |
---|
987 | |
---|
988 | if (!version_compare($server_version, '5.0.2', '<')) { |
---|
989 | $this->supported['triggers'] = true; |
---|
990 | } |
---|
991 | } |
---|
992 | } |
---|
993 | } |
---|
994 | |
---|
995 | // }}} |
---|
996 | // {{{ function _skipUserDefinedVariable($query, $position) |
---|
997 | |
---|
998 | /** |
---|
999 | * Utility method, used by prepare() to avoid misinterpreting MySQL user |
---|
1000 | * defined variables (SELECT @x:=5) for placeholders. |
---|
1001 | * Check if the placeholder is a false positive, i.e. if it is an user defined |
---|
1002 | * variable instead. If so, skip it and advance the position, otherwise |
---|
1003 | * return the current position, which is valid |
---|
1004 | * |
---|
1005 | * @param string $query |
---|
1006 | * @param integer $position current string cursor position |
---|
1007 | * @return integer $new_position |
---|
1008 | * @access protected |
---|
1009 | */ |
---|
1010 | function _skipUserDefinedVariable($query, $position) |
---|
1011 | { |
---|
1012 | $found = strpos(strrev(substr($query, 0, $position)), '@'); |
---|
1013 | if ($found === false) { |
---|
1014 | return $position; |
---|
1015 | } |
---|
1016 | $pos = strlen($query) - strlen(substr($query, $position)) - $found - 1; |
---|
1017 | $substring = substr($query, $pos, $position - $pos + 2); |
---|
1018 | if (preg_match('/^@\w+\s*:=$/', $substring)) { |
---|
1019 | return $position + 1; //found an user defined variable: skip it |
---|
1020 | } |
---|
1021 | return $position; |
---|
1022 | } |
---|
1023 | |
---|
1024 | // }}} |
---|
1025 | // {{{ prepare() |
---|
1026 | |
---|
1027 | /** |
---|
1028 | * Prepares a query for multiple execution with execute(). |
---|
1029 | * With some database backends, this is emulated. |
---|
1030 | * prepare() requires a generic query as string like |
---|
1031 | * 'INSERT INTO numbers VALUES(?,?)' or |
---|
1032 | * 'INSERT INTO numbers VALUES(:foo,:bar)'. |
---|
1033 | * The ? and :name and are placeholders which can be set using |
---|
1034 | * bindParam() and the query can be sent off using the execute() method. |
---|
1035 | * The allowed format for :name can be set with the 'bindname_format' option. |
---|
1036 | * |
---|
1037 | * @param string $query the query to prepare |
---|
1038 | * @param mixed $types array that contains the types of the placeholders |
---|
1039 | * @param mixed $result_types array that contains the types of the columns in |
---|
1040 | * the result set or MDB2_PREPARE_RESULT, if set to |
---|
1041 | * MDB2_PREPARE_MANIP the query is handled as a manipulation query |
---|
1042 | * @param mixed $lobs key (field) value (parameter) pair for all lob placeholders |
---|
1043 | * @return mixed resource handle for the prepared query on success, a MDB2 |
---|
1044 | * error on failure |
---|
1045 | * @access public |
---|
1046 | * @see bindParam, execute |
---|
1047 | */ |
---|
1048 | function prepare($query, $types = null, $result_types = null, $lobs = array()) |
---|
1049 | { |
---|
1050 | // connect to get server capabilities (http://pear.php.net/bugs/16147) |
---|
1051 | $connection = $this->getConnection(); |
---|
1052 | if (MDB2::isError($connection)) { |
---|
1053 | return $connection; |
---|
1054 | } |
---|
1055 | |
---|
1056 | if ($this->options['emulate_prepared'] |
---|
1057 | || $this->supported['prepared_statements'] !== true |
---|
1058 | ) { |
---|
1059 | return parent::prepare($query, $types, $result_types, $lobs); |
---|
1060 | } |
---|
1061 | $is_manip = ($result_types === MDB2_PREPARE_MANIP); |
---|
1062 | $offset = $this->offset; |
---|
1063 | $limit = $this->limit; |
---|
1064 | $this->offset = $this->limit = 0; |
---|
1065 | $query = $this->_modifyQuery($query, $is_manip, $limit, $offset); |
---|
1066 | $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre')); |
---|
1067 | if ($result) { |
---|
1068 | if (MDB2::isError($result)) { |
---|
1069 | return $result; |
---|
1070 | } |
---|
1071 | $query = $result; |
---|
1072 | } |
---|
1073 | $placeholder_type_guess = $placeholder_type = null; |
---|
1074 | $question = '?'; |
---|
1075 | $colon = ':'; |
---|
1076 | $positions = array(); |
---|
1077 | $position = 0; |
---|
1078 | while ($position < strlen($query)) { |
---|
1079 | $q_position = strpos($query, $question, $position); |
---|
1080 | $c_position = strpos($query, $colon, $position); |
---|
1081 | if ($q_position && $c_position) { |
---|
1082 | $p_position = min($q_position, $c_position); |
---|
1083 | } elseif ($q_position) { |
---|
1084 | $p_position = $q_position; |
---|
1085 | } elseif ($c_position) { |
---|
1086 | $p_position = $c_position; |
---|
1087 | } else { |
---|
1088 | break; |
---|
1089 | } |
---|
1090 | if (is_null($placeholder_type)) { |
---|
1091 | $placeholder_type_guess = $query[$p_position]; |
---|
1092 | } |
---|
1093 | |
---|
1094 | $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position); |
---|
1095 | if (MDB2::isError($new_pos)) { |
---|
1096 | return $new_pos; |
---|
1097 | } |
---|
1098 | if ($new_pos != $position) { |
---|
1099 | $position = $new_pos; |
---|
1100 | continue; //evaluate again starting from the new position |
---|
1101 | } |
---|
1102 | |
---|
1103 | //make sure this is not part of an user defined variable |
---|
1104 | $new_pos = $this->_skipUserDefinedVariable($query, $position); |
---|
1105 | if ($new_pos != $position) { |
---|
1106 | $position = $new_pos; |
---|
1107 | continue; //evaluate again starting from the new position |
---|
1108 | } |
---|
1109 | |
---|
1110 | if ($query[$position] == $placeholder_type_guess) { |
---|
1111 | if (is_null($placeholder_type)) { |
---|
1112 | $placeholder_type = $query[$p_position]; |
---|
1113 | $question = $colon = $placeholder_type; |
---|
1114 | } |
---|
1115 | if ($placeholder_type == ':') { |
---|
1116 | $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s'; |
---|
1117 | $parameter = preg_replace($regexp, '\\1', $query); |
---|
1118 | if ($parameter === '') { |
---|
1119 | $err = $this->raiseError(MDB2_ERROR_SYNTAX, null, null, |
---|
1120 | 'named parameter name must match "bindname_format" option', __FUNCTION__); |
---|
1121 | return $err; |
---|
1122 | } |
---|
1123 | $positions[$p_position] = $parameter; |
---|
1124 | $query = substr_replace($query, '?', $position, strlen($parameter)+1); |
---|
1125 | } else { |
---|
1126 | $positions[$p_position] = count($positions); |
---|
1127 | } |
---|
1128 | $position = $p_position + 1; |
---|
1129 | } else { |
---|
1130 | $position = $p_position; |
---|
1131 | } |
---|
1132 | } |
---|
1133 | |
---|
1134 | static $prep_statement_counter = 1; |
---|
1135 | $statement_name = sprintf($this->options['statement_format'], $this->phptype, $prep_statement_counter++ . sha1(microtime() + mt_rand())); |
---|
1136 | $statement_name = substr(strtolower($statement_name), 0, $this->options['max_identifiers_length']); |
---|
1137 | $query = "PREPARE $statement_name FROM ".$this->quote($query, 'text'); |
---|
1138 | $statement = $this->_doQuery($query, true, $connection); |
---|
1139 | if (MDB2::isError($statement)) { |
---|
1140 | return $statement; |
---|
1141 | } |
---|
1142 | |
---|
1143 | $class_name = 'MDB2_Statement_'.$this->phptype; |
---|
1144 | $obj = new $class_name($this, $statement_name, $positions, $query, $types, $result_types, $is_manip, $limit, $offset); |
---|
1145 | $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj)); |
---|
1146 | return $obj; |
---|
1147 | } |
---|
1148 | |
---|
1149 | // }}} |
---|
1150 | // {{{ replace() |
---|
1151 | |
---|
1152 | /** |
---|
1153 | * Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT |
---|
1154 | * query, except that if there is already a row in the table with the same |
---|
1155 | * key field values, the old row is deleted before the new row is inserted. |
---|
1156 | * |
---|
1157 | * The REPLACE type of query does not make part of the SQL standards. Since |
---|
1158 | * practically only MySQL implements it natively, this type of query is |
---|
1159 | * emulated through this method for other DBMS using standard types of |
---|
1160 | * queries inside a transaction to assure the atomicity of the operation. |
---|
1161 | * |
---|
1162 | * @access public |
---|
1163 | * |
---|
1164 | * @param string $table name of the table on which the REPLACE query will |
---|
1165 | * be executed. |
---|
1166 | * @param array $fields associative array that describes the fields and the |
---|
1167 | * values that will be inserted or updated in the specified table. The |
---|
1168 | * indexes of the array are the names of all the fields of the table. The |
---|
1169 | * values of the array are also associative arrays that describe the |
---|
1170 | * values and other properties of the table fields. |
---|
1171 | * |
---|
1172 | * Here follows a list of field properties that need to be specified: |
---|
1173 | * |
---|
1174 | * value: |
---|
1175 | * Value to be assigned to the specified field. This value may be |
---|
1176 | * of specified in database independent type format as this |
---|
1177 | * function can perform the necessary datatype conversions. |
---|
1178 | * |
---|
1179 | * Default: |
---|
1180 | * this property is required unless the Null property |
---|
1181 | * is set to 1. |
---|
1182 | * |
---|
1183 | * type |
---|
1184 | * Name of the type of the field. Currently, all types Metabase |
---|
1185 | * are supported except for clob and blob. |
---|
1186 | * |
---|
1187 | * Default: no type conversion |
---|
1188 | * |
---|
1189 | * null |
---|
1190 | * Boolean property that indicates that the value for this field |
---|
1191 | * should be set to null. |
---|
1192 | * |
---|
1193 | * The default value for fields missing in INSERT queries may be |
---|
1194 | * specified the definition of a table. Often, the default value |
---|
1195 | * is already null, but since the REPLACE may be emulated using |
---|
1196 | * an UPDATE query, make sure that all fields of the table are |
---|
1197 | * listed in this function argument array. |
---|
1198 | * |
---|
1199 | * Default: 0 |
---|
1200 | * |
---|
1201 | * key |
---|
1202 | * Boolean property that indicates that this field should be |
---|
1203 | * handled as a primary key or at least as part of the compound |
---|
1204 | * unique index of the table that will determine the row that will |
---|
1205 | * updated if it exists or inserted a new row otherwise. |
---|
1206 | * |
---|
1207 | * This function will fail if no key field is specified or if the |
---|
1208 | * value of a key field is set to null because fields that are |
---|
1209 | * part of unique index they may not be null. |
---|
1210 | * |
---|
1211 | * Default: 0 |
---|
1212 | * |
---|
1213 | * @see http://dev.mysql.com/doc/refman/5.0/en/replace.html |
---|
1214 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
---|
1215 | */ |
---|
1216 | function replace($table, $fields) |
---|
1217 | { |
---|
1218 | $count = count($fields); |
---|
1219 | $query = $values = ''; |
---|
1220 | $keys = $colnum = 0; |
---|
1221 | for (reset($fields); $colnum < $count; next($fields), $colnum++) { |
---|
1222 | $name = key($fields); |
---|
1223 | if ($colnum > 0) { |
---|
1224 | $query .= ','; |
---|
1225 | $values.= ','; |
---|
1226 | } |
---|
1227 | $query.= $this->quoteIdentifier($name, true); |
---|
1228 | if (isset($fields[$name]['null']) && $fields[$name]['null']) { |
---|
1229 | $value = 'NULL'; |
---|
1230 | } else { |
---|
1231 | $type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null; |
---|
1232 | $value = $this->quote($fields[$name]['value'], $type); |
---|
1233 | if (MDB2::isError($value)) { |
---|
1234 | return $value; |
---|
1235 | } |
---|
1236 | } |
---|
1237 | $values.= $value; |
---|
1238 | if (isset($fields[$name]['key']) && $fields[$name]['key']) { |
---|
1239 | if ($value === 'NULL') { |
---|
1240 | return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null, |
---|
1241 | 'key value '.$name.' may not be NULL', __FUNCTION__); |
---|
1242 | } |
---|
1243 | $keys++; |
---|
1244 | } |
---|
1245 | } |
---|
1246 | if ($keys == 0) { |
---|
1247 | return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null, |
---|
1248 | 'not specified which fields are keys', __FUNCTION__); |
---|
1249 | } |
---|
1250 | |
---|
1251 | $connection = $this->getConnection(); |
---|
1252 | if (MDB2::isError($connection)) { |
---|
1253 | return $connection; |
---|
1254 | } |
---|
1255 | |
---|
1256 | $table = $this->quoteIdentifier($table, true); |
---|
1257 | $query = "REPLACE INTO $table ($query) VALUES ($values)"; |
---|
1258 | $result = $this->_doQuery($query, true, $connection); |
---|
1259 | if (MDB2::isError($result)) { |
---|
1260 | return $result; |
---|
1261 | } |
---|
1262 | return $this->_affectedRows($connection, $result); |
---|
1263 | } |
---|
1264 | |
---|
1265 | // }}} |
---|
1266 | // {{{ nextID() |
---|
1267 | |
---|
1268 | /** |
---|
1269 | * Returns the next free id of a sequence |
---|
1270 | * |
---|
1271 | * @param string $seq_name name of the sequence |
---|
1272 | * @param boolean $ondemand when true the sequence is |
---|
1273 | * automatic created, if it |
---|
1274 | * not exists |
---|
1275 | * |
---|
1276 | * @return mixed MDB2 Error Object or id |
---|
1277 | * @access public |
---|
1278 | */ |
---|
1279 | function nextID($seq_name, $ondemand = true) |
---|
1280 | { |
---|
1281 | $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true); |
---|
1282 | $seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true); |
---|
1283 | $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (NULL)"; |
---|
1284 | $this->pushErrorHandling(PEAR_ERROR_RETURN); |
---|
1285 | $this->expectError(MDB2_ERROR_NOSUCHTABLE); |
---|
1286 | $result = $this->_doQuery($query, true); |
---|
1287 | $this->popExpect(); |
---|
1288 | $this->popErrorHandling(); |
---|
1289 | if (MDB2::isError($result)) { |
---|
1290 | if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) { |
---|
1291 | $this->loadModule('Manager', null, true); |
---|
1292 | $result = $this->manager->createSequence($seq_name); |
---|
1293 | if (MDB2::isError($result)) { |
---|
1294 | return $this->raiseError($result, null, null, |
---|
1295 | 'on demand sequence '.$seq_name.' could not be created', __FUNCTION__); |
---|
1296 | } else { |
---|
1297 | return $this->nextID($seq_name, false); |
---|
1298 | } |
---|
1299 | } |
---|
1300 | return $result; |
---|
1301 | } |
---|
1302 | $value = $this->lastInsertID(); |
---|
1303 | if (is_numeric($value)) { |
---|
1304 | $query = "DELETE FROM $sequence_name WHERE $seqcol_name < $value"; |
---|
1305 | $result = $this->_doQuery($query, true); |
---|
1306 | if (MDB2::isError($result)) { |
---|
1307 | $this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name; |
---|
1308 | } |
---|
1309 | } |
---|
1310 | return $value; |
---|
1311 | } |
---|
1312 | |
---|
1313 | // }}} |
---|
1314 | // {{{ lastInsertID() |
---|
1315 | |
---|
1316 | /** |
---|
1317 | * Returns the autoincrement ID if supported or $id or fetches the current |
---|
1318 | * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field) |
---|
1319 | * |
---|
1320 | * @param string $table name of the table into which a new row was inserted |
---|
1321 | * @param string $field name of the field into which a new row was inserted |
---|
1322 | * @return mixed MDB2 Error Object or id |
---|
1323 | * @access public |
---|
1324 | */ |
---|
1325 | function lastInsertID($table = null, $field = null) |
---|
1326 | { |
---|
1327 | // not using mysql_insert_id() due to http://pear.php.net/bugs/bug.php?id=8051 |
---|
1328 | // not casting to integer to handle BIGINT http://pear.php.net/bugs/bug.php?id=17650 |
---|
1329 | return $this->queryOne('SELECT LAST_INSERT_ID()'); |
---|
1330 | } |
---|
1331 | |
---|
1332 | // }}} |
---|
1333 | // {{{ currID() |
---|
1334 | |
---|
1335 | /** |
---|
1336 | * Returns the current id of a sequence |
---|
1337 | * |
---|
1338 | * @param string $seq_name name of the sequence |
---|
1339 | * @return mixed MDB2 Error Object or id |
---|
1340 | * @access public |
---|
1341 | */ |
---|
1342 | function currID($seq_name) |
---|
1343 | { |
---|
1344 | $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true); |
---|
1345 | $seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true); |
---|
1346 | $query = "SELECT MAX($seqcol_name) FROM $sequence_name"; |
---|
1347 | return $this->queryOne($query, 'integer'); |
---|
1348 | } |
---|
1349 | } |
---|
1350 | |
---|
1351 | /** |
---|
1352 | * MDB2 MySQL result driver |
---|
1353 | * |
---|
1354 | * @package MDB2 |
---|
1355 | * @category Database |
---|
1356 | * @author Lukas Smith <smith@pooteeweet.org> |
---|
1357 | */ |
---|
1358 | class MDB2_Result_mysql extends MDB2_Result_Common |
---|
1359 | { |
---|
1360 | // }}} |
---|
1361 | // {{{ fetchRow() |
---|
1362 | |
---|
1363 | /** |
---|
1364 | * Fetch a row and insert the data into an existing array. |
---|
1365 | * |
---|
1366 | * @param int $fetchmode how the array data should be indexed |
---|
1367 | * @param int $rownum number of the row where the data can be found |
---|
1368 | * @return int data array on success, a MDB2 error on failure |
---|
1369 | * @access public |
---|
1370 | */ |
---|
1371 | function fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null) |
---|
1372 | { |
---|
1373 | if (!is_null($rownum)) { |
---|
1374 | $seek = $this->seek($rownum); |
---|
1375 | if (MDB2::isError($seek)) { |
---|
1376 | return $seek; |
---|
1377 | } |
---|
1378 | } |
---|
1379 | if ($fetchmode == MDB2_FETCHMODE_DEFAULT) { |
---|
1380 | $fetchmode = $this->db->fetchmode; |
---|
1381 | } |
---|
1382 | if ( $fetchmode == MDB2_FETCHMODE_ASSOC |
---|
1383 | || $fetchmode == MDB2_FETCHMODE_OBJECT |
---|
1384 | ) { |
---|
1385 | $row = @mysql_fetch_assoc($this->result); |
---|
1386 | if (is_array($row) |
---|
1387 | && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE |
---|
1388 | ) { |
---|
1389 | $row = array_change_key_case($row, $this->db->options['field_case']); |
---|
1390 | } |
---|
1391 | } else { |
---|
1392 | $row = @mysql_fetch_row($this->result); |
---|
1393 | } |
---|
1394 | |
---|
1395 | if (!$row) { |
---|
1396 | if ($this->result === false) { |
---|
1397 | $err = $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
---|
1398 | 'resultset has already been freed', __FUNCTION__); |
---|
1399 | return $err; |
---|
1400 | } |
---|
1401 | return null; |
---|
1402 | } |
---|
1403 | $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL; |
---|
1404 | $rtrim = false; |
---|
1405 | if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) { |
---|
1406 | if (empty($this->types)) { |
---|
1407 | $mode += MDB2_PORTABILITY_RTRIM; |
---|
1408 | } else { |
---|
1409 | $rtrim = true; |
---|
1410 | } |
---|
1411 | } |
---|
1412 | if ($mode) { |
---|
1413 | $this->db->_fixResultArrayValues($row, $mode); |
---|
1414 | } |
---|
1415 | if ( ( $fetchmode != MDB2_FETCHMODE_ASSOC |
---|
1416 | && $fetchmode != MDB2_FETCHMODE_OBJECT) |
---|
1417 | && !empty($this->types) |
---|
1418 | ) { |
---|
1419 | $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim); |
---|
1420 | } elseif (($fetchmode == MDB2_FETCHMODE_ASSOC |
---|
1421 | || $fetchmode == MDB2_FETCHMODE_OBJECT) |
---|
1422 | && !empty($this->types_assoc) |
---|
1423 | ) { |
---|
1424 | $row = $this->db->datatype->convertResultRow($this->types_assoc, $row, $rtrim); |
---|
1425 | } |
---|
1426 | if (!empty($this->values)) { |
---|
1427 | $this->_assignBindColumns($row); |
---|
1428 | } |
---|
1429 | if ($fetchmode === MDB2_FETCHMODE_OBJECT) { |
---|
1430 | $object_class = $this->db->options['fetch_class']; |
---|
1431 | if ($object_class == 'stdClass') { |
---|
1432 | $row = (object) $row; |
---|
1433 | } else { |
---|
1434 | $rowObj = new $object_class($row); |
---|
1435 | $row = $rowObj; |
---|
1436 | } |
---|
1437 | } |
---|
1438 | ++$this->rownum; |
---|
1439 | return $row; |
---|
1440 | } |
---|
1441 | |
---|
1442 | // }}} |
---|
1443 | // {{{ _getColumnNames() |
---|
1444 | |
---|
1445 | /** |
---|
1446 | * Retrieve the names of columns returned by the DBMS in a query result. |
---|
1447 | * |
---|
1448 | * @return mixed Array variable that holds the names of columns as keys |
---|
1449 | * or an MDB2 error on failure. |
---|
1450 | * Some DBMS may not return any columns when the result set |
---|
1451 | * does not contain any rows. |
---|
1452 | * @access private |
---|
1453 | */ |
---|
1454 | function _getColumnNames() |
---|
1455 | { |
---|
1456 | $columns = array(); |
---|
1457 | $numcols = $this->numCols(); |
---|
1458 | if (MDB2::isError($numcols)) { |
---|
1459 | return $numcols; |
---|
1460 | } |
---|
1461 | for ($column = 0; $column < $numcols; $column++) { |
---|
1462 | $column_name = @mysql_field_name($this->result, $column); |
---|
1463 | $columns[$column_name] = $column; |
---|
1464 | } |
---|
1465 | if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { |
---|
1466 | $columns = array_change_key_case($columns, $this->db->options['field_case']); |
---|
1467 | } |
---|
1468 | return $columns; |
---|
1469 | } |
---|
1470 | |
---|
1471 | // }}} |
---|
1472 | // {{{ numCols() |
---|
1473 | |
---|
1474 | /** |
---|
1475 | * Count the number of columns returned by the DBMS in a query result. |
---|
1476 | * |
---|
1477 | * @return mixed integer value with the number of columns, a MDB2 error |
---|
1478 | * on failure |
---|
1479 | * @access public |
---|
1480 | */ |
---|
1481 | function numCols() |
---|
1482 | { |
---|
1483 | $cols = @mysql_num_fields($this->result); |
---|
1484 | if (is_null($cols)) { |
---|
1485 | if ($this->result === false) { |
---|
1486 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
---|
1487 | 'resultset has already been freed', __FUNCTION__); |
---|
1488 | } elseif (is_null($this->result)) { |
---|
1489 | return count($this->types); |
---|
1490 | } |
---|
1491 | return $this->db->raiseError(null, null, null, |
---|
1492 | 'Could not get column count', __FUNCTION__); |
---|
1493 | } |
---|
1494 | return $cols; |
---|
1495 | } |
---|
1496 | |
---|
1497 | // }}} |
---|
1498 | // {{{ free() |
---|
1499 | |
---|
1500 | /** |
---|
1501 | * Free the internal resources associated with result. |
---|
1502 | * |
---|
1503 | * @return boolean true on success, false if result is invalid |
---|
1504 | * @access public |
---|
1505 | */ |
---|
1506 | function free() |
---|
1507 | { |
---|
1508 | if (is_resource($this->result) && $this->db->connection) { |
---|
1509 | $free = @mysql_free_result($this->result); |
---|
1510 | if ($free === false) { |
---|
1511 | return $this->db->raiseError(null, null, null, |
---|
1512 | 'Could not free result', __FUNCTION__); |
---|
1513 | } |
---|
1514 | } |
---|
1515 | $this->result = false; |
---|
1516 | return MDB2_OK; |
---|
1517 | } |
---|
1518 | } |
---|
1519 | |
---|
1520 | /** |
---|
1521 | * MDB2 MySQL buffered result driver |
---|
1522 | * |
---|
1523 | * @package MDB2 |
---|
1524 | * @category Database |
---|
1525 | * @author Lukas Smith <smith@pooteeweet.org> |
---|
1526 | */ |
---|
1527 | class MDB2_BufferedResult_mysql extends MDB2_Result_mysql |
---|
1528 | { |
---|
1529 | // }}} |
---|
1530 | // {{{ seek() |
---|
1531 | |
---|
1532 | /** |
---|
1533 | * Seek to a specific row in a result set |
---|
1534 | * |
---|
1535 | * @param int $rownum number of the row where the data can be found |
---|
1536 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
---|
1537 | * @access public |
---|
1538 | */ |
---|
1539 | function seek($rownum = 0) |
---|
1540 | { |
---|
1541 | if ($this->rownum != ($rownum - 1) && !@mysql_data_seek($this->result, $rownum)) { |
---|
1542 | if ($this->result === false) { |
---|
1543 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
---|
1544 | 'resultset has already been freed', __FUNCTION__); |
---|
1545 | } elseif (is_null($this->result)) { |
---|
1546 | return MDB2_OK; |
---|
1547 | } |
---|
1548 | return $this->db->raiseError(MDB2_ERROR_INVALID, null, null, |
---|
1549 | 'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__); |
---|
1550 | } |
---|
1551 | $this->rownum = $rownum - 1; |
---|
1552 | return MDB2_OK; |
---|
1553 | } |
---|
1554 | |
---|
1555 | // }}} |
---|
1556 | // {{{ valid() |
---|
1557 | |
---|
1558 | /** |
---|
1559 | * Check if the end of the result set has been reached |
---|
1560 | * |
---|
1561 | * @return mixed true or false on sucess, a MDB2 error on failure |
---|
1562 | * @access public |
---|
1563 | */ |
---|
1564 | function valid() |
---|
1565 | { |
---|
1566 | $numrows = $this->numRows(); |
---|
1567 | if (MDB2::isError($numrows)) { |
---|
1568 | return $numrows; |
---|
1569 | } |
---|
1570 | return $this->rownum < ($numrows - 1); |
---|
1571 | } |
---|
1572 | |
---|
1573 | // }}} |
---|
1574 | // {{{ numRows() |
---|
1575 | |
---|
1576 | /** |
---|
1577 | * Returns the number of rows in a result object |
---|
1578 | * |
---|
1579 | * @return mixed MDB2 Error Object or the number of rows |
---|
1580 | * @access public |
---|
1581 | */ |
---|
1582 | function numRows() |
---|
1583 | { |
---|
1584 | $rows = @mysql_num_rows($this->result); |
---|
1585 | if (false === $rows) { |
---|
1586 | if (false === $this->result) { |
---|
1587 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
---|
1588 | 'resultset has already been freed', __FUNCTION__); |
---|
1589 | } elseif (is_null($this->result)) { |
---|
1590 | return 0; |
---|
1591 | } |
---|
1592 | return $this->db->raiseError(null, null, null, |
---|
1593 | 'Could not get row count', __FUNCTION__); |
---|
1594 | } |
---|
1595 | return $rows; |
---|
1596 | } |
---|
1597 | |
---|
1598 | // }}} |
---|
1599 | } |
---|
1600 | |
---|
1601 | /** |
---|
1602 | * MDB2 MySQL statement driver |
---|
1603 | * |
---|
1604 | * @package MDB2 |
---|
1605 | * @category Database |
---|
1606 | * @author Lukas Smith <smith@pooteeweet.org> |
---|
1607 | */ |
---|
1608 | class MDB2_Statement_mysql extends MDB2_Statement_Common |
---|
1609 | { |
---|
1610 | // {{{ _execute() |
---|
1611 | |
---|
1612 | /** |
---|
1613 | * Execute a prepared query statement helper method. |
---|
1614 | * |
---|
1615 | * @param mixed $result_class string which specifies which result class to use |
---|
1616 | * @param mixed $result_wrap_class string which specifies which class to wrap results in |
---|
1617 | * |
---|
1618 | * @return mixed MDB2_Result or integer (affected rows) on success, |
---|
1619 | * a MDB2 error on failure |
---|
1620 | * @access private |
---|
1621 | */ |
---|
1622 | function _execute($result_class = true, $result_wrap_class = true) |
---|
1623 | { |
---|
1624 | if (is_null($this->statement)) { |
---|
1625 | $result = parent::_execute($result_class, $result_wrap_class); |
---|
1626 | return $result; |
---|
1627 | } |
---|
1628 | $this->db->last_query = $this->query; |
---|
1629 | $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'pre', 'parameters' => $this->values)); |
---|
1630 | if ($this->db->getOption('disable_query')) { |
---|
1631 | $result = $this->is_manip ? 0 : null; |
---|
1632 | return $result; |
---|
1633 | } |
---|
1634 | |
---|
1635 | $connection = $this->db->getConnection(); |
---|
1636 | if (MDB2::isError($connection)) { |
---|
1637 | return $connection; |
---|
1638 | } |
---|
1639 | |
---|
1640 | $query = 'EXECUTE '.$this->statement; |
---|
1641 | if (!empty($this->positions)) { |
---|
1642 | $parameters = array(); |
---|
1643 | foreach ($this->positions as $parameter) { |
---|
1644 | if (!array_key_exists($parameter, $this->values)) { |
---|
1645 | return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, |
---|
1646 | 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__); |
---|
1647 | } |
---|
1648 | $close = false; |
---|
1649 | $value = $this->values[$parameter]; |
---|
1650 | $type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null; |
---|
1651 | if (is_resource($value) || $type == 'clob' || $type == 'blob' && $this->db->options['lob_allow_url_include']) { |
---|
1652 | if (!is_resource($value) && preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) { |
---|
1653 | if ($match[1] == 'file://') { |
---|
1654 | $value = $match[2]; |
---|
1655 | } |
---|
1656 | $value = @fopen($value, 'r'); |
---|
1657 | $close = true; |
---|
1658 | } |
---|
1659 | if (is_resource($value)) { |
---|
1660 | $data = ''; |
---|
1661 | while (!@feof($value)) { |
---|
1662 | $data.= @fread($value, $this->db->options['lob_buffer_length']); |
---|
1663 | } |
---|
1664 | if ($close) { |
---|
1665 | @fclose($value); |
---|
1666 | } |
---|
1667 | $value = $data; |
---|
1668 | } |
---|
1669 | } |
---|
1670 | $quoted = $this->db->quote($value, $type); |
---|
1671 | if (MDB2::isError($quoted)) { |
---|
1672 | return $quoted; |
---|
1673 | } |
---|
1674 | $param_query = 'SET @'.$parameter.' = '.$quoted; |
---|
1675 | $result = $this->db->_doQuery($param_query, true, $connection); |
---|
1676 | if (MDB2::isError($result)) { |
---|
1677 | return $result; |
---|
1678 | } |
---|
1679 | } |
---|
1680 | $query.= ' USING @'.implode(', @', array_values($this->positions)); |
---|
1681 | } |
---|
1682 | |
---|
1683 | $result = $this->db->_doQuery($query, $this->is_manip, $connection); |
---|
1684 | if (MDB2::isError($result)) { |
---|
1685 | return $result; |
---|
1686 | } |
---|
1687 | |
---|
1688 | if ($this->is_manip) { |
---|
1689 | $affected_rows = $this->db->_affectedRows($connection, $result); |
---|
1690 | return $affected_rows; |
---|
1691 | } |
---|
1692 | |
---|
1693 | $result = $this->db->_wrapResult($result, $this->result_types, |
---|
1694 | $result_class, $result_wrap_class, $this->limit, $this->offset); |
---|
1695 | $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'post', 'result' => $result)); |
---|
1696 | return $result; |
---|
1697 | } |
---|
1698 | |
---|
1699 | // }}} |
---|
1700 | // {{{ free() |
---|
1701 | |
---|
1702 | /** |
---|
1703 | * Release resources allocated for the specified prepared query. |
---|
1704 | * |
---|
1705 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
---|
1706 | * @access public |
---|
1707 | */ |
---|
1708 | function free() |
---|
1709 | { |
---|
1710 | if (is_null($this->positions)) { |
---|
1711 | return $this->db->raiseError(MDB2_ERROR, null, null, |
---|
1712 | 'Prepared statement has already been freed', __FUNCTION__); |
---|
1713 | } |
---|
1714 | $result = MDB2_OK; |
---|
1715 | |
---|
1716 | if (!is_null($this->statement)) { |
---|
1717 | $connection = $this->db->getConnection(); |
---|
1718 | if (MDB2::isError($connection)) { |
---|
1719 | return $connection; |
---|
1720 | } |
---|
1721 | $query = 'DEALLOCATE PREPARE '.$this->statement; |
---|
1722 | $result = $this->db->_doQuery($query, true, $connection); |
---|
1723 | } |
---|
1724 | |
---|
1725 | parent::free(); |
---|
1726 | return $result; |
---|
1727 | } |
---|
1728 | } |
---|
1729 | ?> |
---|