[17073] | 1 | <?php |
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| 2 | /* vim: set expandtab tabstop=4 shiftwidth=4: */ |
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[23143] | 3 | // |
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| 4 | // +----------------------------------------------------------------------+ |
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| 5 | // | PHP Version 4 | |
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| 6 | // +----------------------------------------------------------------------+ |
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| 7 | // | Copyright (c) 1997-2002 The PHP Group | |
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| 8 | // +----------------------------------------------------------------------+ |
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| 9 | // | This source file is subject to version 2.02 of the PHP license, | |
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| 10 | // | that is bundled with this package in the file LICENSE, and is | |
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| 11 | // | available at through the world-wide-web at | |
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| 12 | // | http://www.php.net/license/3_0.txt. | |
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| 13 | // | If you did not receive a copy of the PHP license and are unable to | |
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| 14 | // | obtain it through the world-wide-web, please send a note to | |
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| 15 | // | license@php.net so we can mail you a copy immediately. | |
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| 16 | // +----------------------------------------------------------------------+ |
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| 17 | // | Authors: Harry Fuecks <hfuecks@phppatterns.com> | |
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| 18 | // +----------------------------------------------------------------------+ |
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| 19 | // |
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| 20 | // $Id: UnixTS.php,v 1.9 2004/08/20 20:00:55 quipo Exp $ |
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| 21 | // |
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[17073] | 22 | /** |
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[23143] | 23 | * @package Calendar |
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| 24 | * @version $Id: UnixTS.php,v 1.9 2004/08/20 20:00:55 quipo Exp $ |
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[17073] | 25 | */ |
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| 26 | /** |
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| 27 | * Performs calendar calculations based on the PHP date() function and |
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| 28 | * Unix timestamps (using PHP's mktime() function). |
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[23143] | 29 | * @package Calendar |
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| 30 | * @access protected |
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[17073] | 31 | */ |
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| 32 | class Calendar_Engine_UnixTS /* implements Calendar_Engine_Interface */ |
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| 33 | { |
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| 34 | /** |
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| 35 | * Makes sure a given timestamp is only ever parsed once |
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| 36 | * <pre> |
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| 37 | * array ( |
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| 38 | * [0] => year (e.g 2003), |
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| 39 | * [1] => month (e.g 9), |
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| 40 | * [2] => day (e.g 6), |
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| 41 | * [3] => hour (e.g 14), |
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| 42 | * [4] => minute (e.g 34), |
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| 43 | * [5] => second (e.g 45), |
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| 44 | * [6] => num days in month (e.g. 31), |
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| 45 | * [7] => week in year (e.g. 50), |
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| 46 | * [8] => day in week (e.g. 0 for Sunday) |
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| 47 | * ) |
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| 48 | * </pre> |
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| 49 | * Uses a static variable to prevent date() being used twice |
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| 50 | * for a date which is already known |
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[23143] | 51 | * @param int Unix timestamp |
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[17073] | 52 | * @return array |
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| 53 | * @access protected |
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| 54 | */ |
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| 55 | function stampCollection($stamp) |
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| 56 | { |
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| 57 | static $stamps = array(); |
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| 58 | if ( !isset($stamps[$stamp]) ) { |
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[23143] | 59 | $date = @date('Y n j H i s t W w',$stamp); |
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[17073] | 60 | $stamps[$stamp] = sscanf($date, "%d %d %d %d %d %d %d %d %d"); |
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| 61 | } |
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| 62 | return $stamps[$stamp]; |
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| 63 | } |
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| 64 | |
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| 65 | /** |
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| 66 | * Returns a numeric year given a timestamp |
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[23143] | 67 | * @param int Unix timestamp |
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[17073] | 68 | * @return int year (e.g. 2003) |
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| 69 | * @access protected |
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| 70 | */ |
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| 71 | function stampToYear($stamp) |
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| 72 | { |
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| 73 | $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
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| 74 | return (int)$date[0]; |
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| 75 | } |
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| 76 | |
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| 77 | /** |
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| 78 | * Returns a numeric month given a timestamp |
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[23143] | 79 | * @param int Unix timestamp |
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[17073] | 80 | * @return int month (e.g. 9) |
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| 81 | * @access protected |
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| 82 | */ |
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| 83 | function stampToMonth($stamp) |
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| 84 | { |
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| 85 | $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
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| 86 | return (int)$date[1]; |
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| 87 | } |
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| 88 | |
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| 89 | /** |
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| 90 | * Returns a numeric day given a timestamp |
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[23143] | 91 | * @param int Unix timestamp |
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[17073] | 92 | * @return int day (e.g. 15) |
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| 93 | * @access protected |
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| 94 | */ |
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| 95 | function stampToDay($stamp) |
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| 96 | { |
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| 97 | $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
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| 98 | return (int)$date[2]; |
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| 99 | } |
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| 100 | |
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| 101 | /** |
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| 102 | * Returns a numeric hour given a timestamp |
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[23143] | 103 | * @param int Unix timestamp |
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[17073] | 104 | * @return int hour (e.g. 13) |
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| 105 | * @access protected |
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| 106 | */ |
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| 107 | function stampToHour($stamp) |
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| 108 | { |
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| 109 | $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
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| 110 | return (int)$date[3]; |
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| 111 | } |
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| 112 | |
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| 113 | /** |
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| 114 | * Returns a numeric minute given a timestamp |
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[23143] | 115 | * @param int Unix timestamp |
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[17073] | 116 | * @return int minute (e.g. 34) |
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| 117 | * @access protected |
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| 118 | */ |
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| 119 | function stampToMinute($stamp) |
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| 120 | { |
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| 121 | $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
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| 122 | return (int)$date[4]; |
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| 123 | } |
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| 124 | |
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| 125 | /** |
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| 126 | * Returns a numeric second given a timestamp |
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[23143] | 127 | * @param int Unix timestamp |
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[17073] | 128 | * @return int second (e.g. 51) |
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| 129 | * @access protected |
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| 130 | */ |
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| 131 | function stampToSecond($stamp) |
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| 132 | { |
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| 133 | $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
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| 134 | return (int)$date[5]; |
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| 135 | } |
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| 136 | |
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| 137 | /** |
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| 138 | * Returns a timestamp |
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[23143] | 139 | * @param int year (2003) |
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| 140 | * @param int month (9) |
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| 141 | * @param int day (13) |
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| 142 | * @param int hour (13) |
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| 143 | * @param int minute (34) |
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| 144 | * @param int second (53) |
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[17073] | 145 | * @return int Unix timestamp |
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| 146 | * @access protected |
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| 147 | */ |
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| 148 | function dateToStamp($y, $m, $d, $h=0, $i=0, $s=0) |
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| 149 | { |
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| 150 | static $dates = array(); |
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[23143] | 151 | if ( !isset($dates[$y][$m][$d][$h][$i][$s]) ) { |
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[17073] | 152 | $dates[$y][$m][$d][$h][$i][$s] = @mktime($h, $i, $s, $m, $d, $y); |
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| 153 | } |
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| 154 | return $dates[$y][$m][$d][$h][$i][$s]; |
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| 155 | } |
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| 156 | |
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| 157 | /** |
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| 158 | * The upper limit on years that the Calendar Engine can work with |
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| 159 | * @return int (2037) |
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| 160 | * @access protected |
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| 161 | */ |
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| 162 | function getMaxYears() |
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| 163 | { |
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| 164 | return 2037; |
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| 165 | } |
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| 166 | |
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| 167 | /** |
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| 168 | * The lower limit on years that the Calendar Engine can work with |
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| 169 | * @return int (1970 if it's Windows and 1902 for all other OSs) |
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| 170 | * @access protected |
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| 171 | */ |
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| 172 | function getMinYears() |
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| 173 | { |
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| 174 | return $min = strpos(PHP_OS, 'WIN') === false ? 1902 : 1970; |
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| 175 | } |
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| 176 | |
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| 177 | /** |
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| 178 | * Returns the number of months in a year |
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| 179 | * @return int (12) |
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[23143] | 180 | * @access protected |
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[17073] | 181 | */ |
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| 182 | function getMonthsInYear($y=null) |
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| 183 | { |
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| 184 | return 12; |
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| 185 | } |
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| 186 | |
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| 187 | /** |
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| 188 | * Returns the number of days in a month, given year and month |
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[23143] | 189 | * @param int year (2003) |
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| 190 | * @param int month (9) |
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[17073] | 191 | * @return int days in month |
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| 192 | * @access protected |
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| 193 | */ |
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| 194 | function getDaysInMonth($y, $m) |
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| 195 | { |
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[23143] | 196 | $stamp = Calendar_Engine_UnixTS::dateToStamp($y,$m,1); |
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| 197 | $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
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[17073] | 198 | return $date[6]; |
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| 199 | } |
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| 200 | |
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| 201 | /** |
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| 202 | * Returns numeric representation of the day of the week in a month, |
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| 203 | * given year and month |
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[23143] | 204 | * @param int year (2003) |
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| 205 | * @param int month (9) |
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[17073] | 206 | * @return int from 0 to 6 |
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| 207 | * @access protected |
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| 208 | */ |
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| 209 | function getFirstDayInMonth($y, $m) |
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| 210 | { |
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[23143] | 211 | $stamp = Calendar_Engine_UnixTS::dateToStamp($y,$m,1); |
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| 212 | $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
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[17073] | 213 | return $date[8]; |
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| 214 | } |
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| 215 | |
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| 216 | /** |
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| 217 | * Returns the number of days in a week |
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[23143] | 218 | * @param int year (2003) |
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| 219 | * @param int month (9) |
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| 220 | * @param int day (4) |
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[17073] | 221 | * @return int (7) |
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| 222 | * @access protected |
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| 223 | */ |
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[23143] | 224 | function getDaysInWeek($y=NULL, $m=NULL, $d=NULL) |
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[17073] | 225 | { |
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| 226 | return 7; |
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| 227 | } |
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| 228 | |
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| 229 | /** |
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| 230 | * Returns the number of the week in the year (ISO-8601), given a date |
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[23143] | 231 | * @param int year (2003) |
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| 232 | * @param int month (9) |
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| 233 | * @param int day (4) |
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[17073] | 234 | * @return int week number |
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| 235 | * @access protected |
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| 236 | */ |
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| 237 | function getWeekNInYear($y, $m, $d) |
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| 238 | { |
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[23143] | 239 | $stamp = Calendar_Engine_UnixTS::dateToStamp($y,$m,$d); |
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| 240 | $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
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[17073] | 241 | return $date[7]; |
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| 242 | } |
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| 243 | |
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| 244 | /** |
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| 245 | * Returns the number of the week in the month, given a date |
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[23143] | 246 | * @param int year (2003) |
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| 247 | * @param int month (9) |
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| 248 | * @param int day (4) |
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| 249 | * @param int first day of the week (default: monday) |
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[17073] | 250 | * @return int week number |
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| 251 | * @access protected |
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| 252 | */ |
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| 253 | function getWeekNInMonth($y, $m, $d, $firstDay=1) |
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| 254 | { |
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[23143] | 255 | $weekEnd = ($firstDay == 0) ? $this->getDaysInWeek()-1 : $firstDay-1; |
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[17073] | 256 | $end_of_week = 1; |
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| 257 | while (@date('w', @mktime(0, 0, 0, $m, $end_of_week, $y)) != $weekEnd) { |
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| 258 | ++$end_of_week; //find first weekend of the month |
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| 259 | } |
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| 260 | $w = 1; |
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| 261 | while ($d > $end_of_week) { |
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| 262 | ++$w; |
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| 263 | $end_of_week += $this->getDaysInWeek(); |
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| 264 | } |
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| 265 | return $w; |
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| 266 | } |
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| 267 | |
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| 268 | /** |
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| 269 | * Returns the number of weeks in the month |
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[23143] | 270 | * @param int year (2003) |
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| 271 | * @param int month (9) |
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| 272 | * @param int first day of the week (default: monday) |
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[17073] | 273 | * @return int weeks number |
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| 274 | * @access protected |
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| 275 | */ |
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[23143] | 276 | function getWeeksInMonth($y, $m, $firstDay=1) |
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[17073] | 277 | { |
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| 278 | $FDOM = $this->getFirstDayInMonth($y, $m); |
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| 279 | if ($FDOM == 0) { |
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| 280 | $FDOM = $this->getDaysInWeek(); |
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| 281 | } |
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| 282 | if ($FDOM > $firstDay) { |
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| 283 | $daysInTheFirstWeek = $this->getDaysInWeek() - $FDOM + $firstDay; |
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| 284 | $weeks = 1; |
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| 285 | } else { |
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| 286 | $daysInTheFirstWeek = $firstDay - $FDOM; |
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| 287 | $weeks = 0; |
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| 288 | } |
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| 289 | $daysInTheFirstWeek %= $this->getDaysInWeek(); |
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| 290 | return (int)(ceil(($this->getDaysInMonth($y, $m) - $daysInTheFirstWeek) / |
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| 291 | $this->getDaysInWeek()) + $weeks); |
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| 292 | } |
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| 293 | |
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| 294 | /** |
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| 295 | * Returns the number of the day of the week (0=sunday, 1=monday...) |
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[23143] | 296 | * @param int year (2003) |
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| 297 | * @param int month (9) |
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| 298 | * @param int day (4) |
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[17073] | 299 | * @return int weekday number |
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| 300 | * @access protected |
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| 301 | */ |
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| 302 | function getDayOfWeek($y, $m, $d) |
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| 303 | { |
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[23143] | 304 | $stamp = Calendar_Engine_UnixTS::dateToStamp($y,$m,$d); |
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[17073] | 305 | $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
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| 306 | return $date[8]; |
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| 307 | } |
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| 308 | |
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| 309 | /** |
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| 310 | * Returns a list of integer days of the week beginning 0 |
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[23143] | 311 | * @param int year (2003) |
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| 312 | * @param int month (9) |
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| 313 | * @param int day (4) |
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[17073] | 314 | * @return array (0,1,2,3,4,5,6) 1 = Monday |
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| 315 | * @access protected |
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| 316 | */ |
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[23143] | 317 | function getWeekDays($y=NULL, $m=NULL, $d=NULL) |
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[17073] | 318 | { |
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| 319 | return array(0, 1, 2, 3, 4, 5, 6); |
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| 320 | } |
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| 321 | |
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| 322 | /** |
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| 323 | * Returns the default first day of the week |
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[23143] | 324 | * @param int year (2003) |
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| 325 | * @param int month (9) |
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| 326 | * @param int day (4) |
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[17073] | 327 | * @return int (default 1 = Monday) |
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| 328 | * @access protected |
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| 329 | */ |
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[23143] | 330 | function getFirstDayOfWeek($y=NULL, $m=NULL, $d=NULL) |
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[17073] | 331 | { |
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| 332 | return 1; |
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| 333 | } |
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| 334 | |
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| 335 | /** |
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| 336 | * Returns the number of hours in a day |
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| 337 | * @return int (24) |
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| 338 | * @access protected |
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| 339 | */ |
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[23143] | 340 | function getHoursInDay($y=null,$m=null,$d=null) |
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[17073] | 341 | { |
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| 342 | return 24; |
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| 343 | } |
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| 344 | |
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| 345 | /** |
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| 346 | * Returns the number of minutes in an hour |
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| 347 | * @return int (60) |
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| 348 | * @access protected |
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| 349 | */ |
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[23143] | 350 | function getMinutesInHour($y=null,$m=null,$d=null,$h=null) |
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[17073] | 351 | { |
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| 352 | return 60; |
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| 353 | } |
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| 354 | |
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| 355 | /** |
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| 356 | * Returns the number of seconds in a minutes |
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| 357 | * @return int (60) |
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| 358 | * @access protected |
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| 359 | */ |
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[23143] | 360 | function getSecondsInMinute($y=null,$m=null,$d=null,$h=null,$i=null) |
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[17073] | 361 | { |
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| 362 | return 60; |
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| 363 | } |
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| 364 | } |
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[23143] | 365 | ?> |
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