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1	<?php
2	// +----------------------------------------------------------------------+
3	// \| PHP versions 4 and 5 \|
4	// +----------------------------------------------------------------------+
5	// \| Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox, \|
6	// \| Stig. S. Bakken, Lukas Smith \|
7	// \| All rights reserved. \|
8	// +----------------------------------------------------------------------+
9	// \| MDB2 is a merge of PEAR DB and Metabases that provides a unified DB \|
10	// \| API as well as database abstraction for PHP applications. \|
11	// \| This LICENSE is in the BSD license style. \|
12	// \| \|
13	// \| Redistribution and use in source and binary forms, with or without \|
14	// \| modification, are permitted provided that the following conditions \|
15	// \| are met: \|
16	// \| \|
17	// \| Redistributions of source code must retain the above copyright \|
18	// \| notice, this list of conditions and the following disclaimer. \|
19	// \| \|
20	// \| Redistributions in binary form must reproduce the above copyright \|
21	// \| notice, this list of conditions and the following disclaimer in the \|
22	// \| documentation and/or other materials provided with the distribution. \|
23	// \| \|
24	// \| Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, \|
25	// \| Lukas Smith nor the names of his contributors may be used to endorse \|
26	// \| or promote products derived from this software without specific prior\|
27	// \| written permission. \|
28	// \| \|
29	// \| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \|
30	// \| "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT \|
31	// \| LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS \|
32	// \| FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE \|
33	// \| REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, \|
34	// \| INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, \|
35	// \| BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS\|
36	// \| OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED \|
37	// \| AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT \|
38	// \| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY\|
39	// \| WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE \|
40	// \| POSSIBILITY OF SUCH DAMAGE. \|
41	// +----------------------------------------------------------------------+
42	// \| Author: Lukas Smith <[email protected]> \|
43	// +----------------------------------------------------------------------+
44	//
45	// $Id: Extended.php,v 1.58 2007/01/06 21:40:52 quipo Exp $
46
47	/**
48	* @package MDB2
49	* @category Database
50	* @author Lukas Smith <[email protected]>
51	*/
52
53	/**
54	* Used by autoPrepare()
55	*/
56	define('MDB2_AUTOQUERY_INSERT', 1);
57	define('MDB2_AUTOQUERY_UPDATE', 2);
58	define('MDB2_AUTOQUERY_DELETE', 3);
59	define('MDB2_AUTOQUERY_SELECT', 4);
60
61	/**
62	* MDB2_Extended: class which adds several high level methods to MDB2
63	*
64	* @package MDB2
65	* @category Database
66	* @author Lukas Smith <[email protected]>
67	*/
68	class MDB2_Extended extends MDB2_Module_Common
69	{
70	// {{{ autoPrepare()
71
72	/**
73	* Generate an insert, update or delete query and call prepare() on it
74	*
75	* @param string table
76	* @param array the fields names
77	* @param int type of query to build
78	* MDB2_AUTOQUERY_INSERT
79	* MDB2_AUTOQUERY_UPDATE
80	* MDB2_AUTOQUERY_DELETE
81	* MDB2_AUTOQUERY_SELECT
82	* @param string (in case of update and delete queries, this string will be put after the sql WHERE statement)
83	* @param array that contains the types of the placeholders
84	* @param mixed array that contains the types of the columns in
85	* the result set or MDB2_PREPARE_RESULT, if set to
86	* MDB2_PREPARE_MANIP the query is handled as a manipulation query
87	*
88	* @return resource handle for the query
89	* @see buildManipSQL
90	* @access public
91	*/
92	function autoPrepare($table, $table_fields, $mode = MDB2_AUTOQUERY_INSERT,
93	$where = false, $types = null, $result_types = MDB2_PREPARE_MANIP)
94	{
95	$query = $this->buildManipSQL($table, $table_fields, $mode, $where);
96	if (PEAR::isError($query)) {
97	return $query;
98	}
99	$db =& $this->getDBInstance();
100	if (PEAR::isError($db)) {
101	return $db;
102	}
103	return $db->prepare($query, $types, $result_types);
104	}
105	// }}}
106
107	// {{{ autoExecute()
108
109	/**
110	* Generate an insert, update or delete query and call prepare() and execute() on it
111	*
112	* @param string name of the table
113	* @param array assoc ($key=>$value) where $key is a field name and $value its value
114	* @param int type of query to build
115	* MDB2_AUTOQUERY_INSERT
116	* MDB2_AUTOQUERY_UPDATE
117	* MDB2_AUTOQUERY_DELETE
118	* MDB2_AUTOQUERY_SELECT
119	* @param string (in case of update and delete queries, this string will be put after the sql WHERE statement)
120	* @param array that contains the types of the placeholders
121	* @param string which specifies which result class to use
122	* @param mixed array that contains the types of the columns in
123	* the result set or MDB2_PREPARE_RESULT, if set to
124	* MDB2_PREPARE_MANIP the query is handled as a manipulation query
125	*
126	* @return bool\|MDB2_Error true on success, a MDB2 error on failure
127	* @see buildManipSQL
128	* @see autoPrepare
129	* @access public
130	*/
131	function &autoExecute($table, $fields_values, $mode = MDB2_AUTOQUERY_INSERT,
132	$where = false, $types = null, $result_class = true, $result_types = MDB2_PREPARE_MANIP)
133	{
134	$fields_values = (array)$fields_values;
135	if ($mode == MDB2_AUTOQUERY_SELECT) {
136	if (is_array($result_types)) {
137	$keys = array_keys($result_types);
138	} elseif (!empty($fields_values)) {
139	$keys = $fields_values;
140	} else {
141	$keys = array();
142	}
143	} else {
144	$keys = array_keys($fields_values);
145	}
146	$params = array_values($fields_values);
147	if (empty($params)) {
148	$query = $this->buildManipSQL($table, $keys, $mode, $where);
149
150	$db =& $this->getDBInstance();
151	if (PEAR::isError($db)) {
152	return $db;
153	}
154	if ($mode == MDB2_AUTOQUERY_SELECT) {
155	$result =& $db->query($query, $result_types, $result_class);
156	} else {
157	$result = $db->exec($query);
158	}
159	} else {
160	$stmt = $this->autoPrepare($table, $keys, $mode, $where, $types, $result_types);
161	if (PEAR::isError($stmt)) {
162	return $stmt;
163	}
164	$result =& $stmt->execute($params, $result_class);
165	$stmt->free();
166	}
167	return $result;
168	}
169	// }}}
170
171	// {{{ buildManipSQL()
172
173	/**
174	* Make automaticaly an sql query for prepare()
175	*
176	* Example : buildManipSQL('table_sql', array('field1', 'field2', 'field3'), MDB2_AUTOQUERY_INSERT)
177	* will return the string : INSERT INTO table_sql (field1,field2,field3) VALUES (?,?,?)
178	* NB : - This belongs more to a SQL Builder class, but this is a simple facility
179	* - Be carefull ! If you don't give a $where param with an UPDATE/DELETE query, all
180	* the records of the table will be updated/deleted !
181	*
182	* @param string name of the table
183	* @param ordered array containing the fields names
184	* @param int type of query to build
185	* MDB2_AUTOQUERY_INSERT
186	* MDB2_AUTOQUERY_UPDATE
187	* MDB2_AUTOQUERY_DELETE
188	* MDB2_AUTOQUERY_SELECT
189	* @param string (in case of update and delete queries, this string will be put after the sql WHERE statement)
190	*
191	* @return string sql query for prepare()
192	* @access public
193	*/
194	function buildManipSQL($table, $table_fields, $mode, $where = false)
195	{
196	$db =& $this->getDBInstance();
197	if (PEAR::isError($db)) {
198	return $db;
199	}
200
201	if ($db->options['quote_identifier']) {
202	$table = $db->quoteIdentifier($table);
203	}
204
205	if (!empty($table_fields) && $db->options['quote_identifier']) {
206	foreach ($table_fields as $key => $field) {
207	$table_fields[$key] = $db->quoteIdentifier($field);
208	}
209	}
210
211	if ($where !== false && !is_null($where)) {
212	if (is_array($where)) {
213	$where = implode(' AND ', $where);
214	}
215	$where = ' WHERE '.$where;
216	}
217
218	switch ($mode) {
219	case MDB2_AUTOQUERY_INSERT:
220	if (empty($table_fields)) {
221	return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
222	'Insert requires table fields', __FUNCTION__);
223	}
224	$cols = implode(', ', $table_fields);
225	$values = '?'.str_repeat(', ?', (count($table_fields) - 1));
226	return 'INSERT INTO '.$table.' ('.$cols.') VALUES ('.$values.')';
227	break;
228	case MDB2_AUTOQUERY_UPDATE:
229	if (empty($table_fields)) {
230	return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
231	'Update requires table fields', __FUNCTION__);
232	}
233	$set = implode(' = ?, ', $table_fields).' = ?';
234	$sql = 'UPDATE '.$table.' SET '.$set.$where;
235	return $sql;
236	break;
237	case MDB2_AUTOQUERY_DELETE:
238	$sql = 'DELETE FROM '.$table.$where;
239	return $sql;
240	break;
241	case MDB2_AUTOQUERY_SELECT:
242	$cols = !empty($table_fields) ? implode(', ', $table_fields) : '*';
243	$sql = 'SELECT '.$cols.' FROM '.$table.$where;
244	return $sql;
245	break;
246	}
247	return $db->raiseError(MDB2_ERROR_SYNTAX, null, null,
248	'Non existant mode', __FUNCTION__);
249	}
250	// }}}
251
252	// {{{ limitQuery()
253
254	/**
255	* Generates a limited query
256	*
257	* @param string query
258	* @param array that contains the types of the columns in the result set
259	* @param integer the numbers of rows to fetch
260	* @param integer the row to start to fetching
261	* @param string which specifies which result class to use
262	* @param mixed string which specifies which class to wrap results in
263	*
264	* @return MDB2_Result\|MDB2_Error result set on success, a MDB2 error on failure
265	* @access public
266	*/
267	function &limitQuery($query, $types, $limit, $offset = 0, $result_class = true,
268	$result_wrap_class = false)
269	{
270	$db =& $this->getDBInstance();
271	if (PEAR::isError($db)) {
272	return $db;
273	}
274
275	$result = $db->setLimit($limit, $offset);
276	if (PEAR::isError($result)) {
277	return $result;
278	}
279	$result =& $db->query($query, $types, $result_class, $result_wrap_class);
280	return $result;
281	}
282	// }}}
283
284	// {{{ execParam()
285
286	/**
287	* Execute a parameterized DML statement.
288	*
289	* @param string the SQL query
290	* @param array if supplied, prepare/execute will be used
291	* with this array as execute parameters
292	* @param array that contains the types of the values defined in $params
293	*
294	* @return int\|MDB2_Error affected rows on success, a MDB2 error on failure
295	* @access public
296	*/
297	function execParam($query, $params = array(), $param_types = null)
298	{
299	$db =& $this->getDBInstance();
300	if (PEAR::isError($db)) {
301	return $db;
302	}
303
304	settype($params, 'array');
305	if (empty($params)) {
306	return $db->exec($query);
307	}
308
309	$stmt = $db->prepare($query, $param_types, MDB2_PREPARE_MANIP);
310	if (PEAR::isError($stmt)) {
311	return $stmt;
312	}
313
314	$result = $stmt->execute($params);
315	if (PEAR::isError($result)) {
316	return $result;
317	}
318
319	$stmt->free();
320	return $result;
321	}
322	// }}}
323
324	// {{{ getOne()
325
326	/**
327	* Fetch the first column of the first row of data returned from a query.
328	* Takes care of doing the query and freeing the results when finished.
329	*
330	* @param string the SQL query
331	* @param string that contains the type of the column in the result set
332	* @param array if supplied, prepare/execute will be used
333	* with this array as execute parameters
334	* @param array that contains the types of the values defined in $params
335	* @param int\|string which column to return
336	*
337	* @return scalar\|MDB2_Error data on success, a MDB2 error on failure
338	* @access public
339	*/
340	function getOne($query, $type = null, $params = array(),
341	$param_types = null, $colnum = 0)
342	{
343	$db =& $this->getDBInstance();
344	if (PEAR::isError($db)) {
345	return $db;
346	}
347
348	settype($params, 'array');
349	settype($type, 'array');
350	if (empty($params)) {
351	return $db->queryOne($query, $type, $colnum);
352	}
353
354	$stmt = $db->prepare($query, $param_types, $type);
355	if (PEAR::isError($stmt)) {
356	return $stmt;
357	}
358
359	$result = $stmt->execute($params);
360	if (!MDB2::isResultCommon($result)) {
361	return $result;
362	}
363
364	$one = $result->fetchOne($colnum);
365	$stmt->free();
366	$result->free();
367	return $one;
368	}
369	// }}}
370
371	// {{{ getRow()
372
373	/**
374	* Fetch the first row of data returned from a query. Takes care
375	* of doing the query and freeing the results when finished.
376	*
377	* @param string the SQL query
378	* @param array that contains the types of the columns in the result set
379	* @param array if supplied, prepare/execute will be used
380	* with this array as execute parameters
381	* @param array that contains the types of the values defined in $params
382	* @param int the fetch mode to use
383	*
384	* @return array\|MDB2_Error data on success, a MDB2 error on failure
385	* @access public
386	*/
387	function getRow($query, $types = null, $params = array(),
388	$param_types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT)
389	{
390	$db =& $this->getDBInstance();
391	if (PEAR::isError($db)) {
392	return $db;
393	}
394
395	settype($params, 'array');
396	if (empty($params)) {
397	return $db->queryRow($query, $types, $fetchmode);
398	}
399
400	$stmt = $db->prepare($query, $param_types, $types);
401	if (PEAR::isError($stmt)) {
402	return $stmt;
403	}
404
405	$result = $stmt->execute($params);
406	if (!MDB2::isResultCommon($result)) {
407	return $result;
408	}
409
410	$row = $result->fetchRow($fetchmode);
411	$stmt->free();
412	$result->free();
413	return $row;
414	}
415	// }}}
416
417	// {{{ getCol()
418
419	/**
420	* Fetch a single column from a result set and return it as an
421	* indexed array.
422	*
423	* @param string the SQL query
424	* @param string that contains the type of the column in the result set
425	* @param array if supplied, prepare/execute will be used
426	* with this array as execute parameters
427	* @param array that contains the types of the values defined in $params
428	* @param int\|string which column to return
429	*
430	* @return array\|MDB2_Error data on success, a MDB2 error on failure
431	* @access public
432	*/
433	function getCol($query, $type = null, $params = array(),
434	$param_types = null, $colnum = 0)
435	{
436	$db =& $this->getDBInstance();
437	if (PEAR::isError($db)) {
438	return $db;
439	}
440
441	settype($params, 'array');
442	settype($type, 'array');
443	if (empty($params)) {
444	return $db->queryCol($query, $type, $colnum);
445	}
446
447	$stmt = $db->prepare($query, $param_types, $type);
448	if (PEAR::isError($stmt)) {
449	return $stmt;
450	}
451
452	$result = $stmt->execute($params);
453	if (!MDB2::isResultCommon($result)) {
454	return $result;
455	}
456
457	$col = $result->fetchCol($colnum);
458	$stmt->free();
459	$result->free();
460	return $col;
461	}
462	// }}}
463
464	// {{{ getAll()
465
466	/**
467	* Fetch all the rows returned from a query.
468	*
469	* @param string the SQL query
470	* @param array that contains the types of the columns in the result set
471	* @param array if supplied, prepare/execute will be used
472	* with this array as execute parameters
473	* @param array that contains the types of the values defined in $params
474	* @param int the fetch mode to use
475	* @param bool if set to true, the $all will have the first
476	* column as its first dimension
477	* @param bool $force_array used only when the query returns exactly
478	* two columns. If true, the values of the returned array will be
479	* one-element arrays instead of scalars.
480	* @param bool $group if true, the values of the returned array is
481	* wrapped in another array. If the same key value (in the first
482	* column) repeats itself, the values will be appended to this array
483	* instead of overwriting the existing values.
484	*
485	* @return array\|MDB2_Error data on success, a MDB2 error on failure
486	* @access public
487	*/
488	function getAll($query, $types = null, $params = array(),
489	$param_types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT,
490	$rekey = false, $force_array = false, $group = false)
491	{
492	$db =& $this->getDBInstance();
493	if (PEAR::isError($db)) {
494	return $db;
495	}
496
497	settype($params, 'array');
498	if (empty($params)) {
499	return $db->queryAll($query, $types, $fetchmode, $rekey, $force_array, $group);
500	}
501
502	$stmt = $db->prepare($query, $param_types, $types);
503
504	sfprintr($stmt);
505
506	if (PEAR::isError($stmt)) {
507	return $stmt;
508	}
509
510	$result = $stmt->execute($params);
511	if (!MDB2::isResultCommon($result)) {
512	return $result;
513	}
514
515	$all = $result->fetchAll($fetchmode, $rekey, $force_array, $group);
516	$stmt->free();
517	$result->free();
518	return $all;
519	}
520	// }}}
521
522	// {{{ getAssoc()
523
524	/**
525	* Fetch the entire result set of a query and return it as an
526	* associative array using the first column as the key.
527	*
528	* If the result set contains more than two columns, the value
529	* will be an array of the values from column 2-n. If the result
530	* set contains only two columns, the returned value will be a
531	* scalar with the value of the second column (unless forced to an
532	* array with the $force_array parameter). A MDB2 error code is
533	* returned on errors. If the result set contains fewer than two
534	* columns, a MDB2_ERROR_TRUNCATED error is returned.
535	*
536	* For example, if the table 'mytable' contains:
537	* <pre>
538	* ID TEXT DATE
539	* --------------------------------
540	* 1 'one' 944679408
541	* 2 'two' 944679408
542	* 3 'three' 944679408
543	* </pre>
544	* Then the call getAssoc('SELECT id,text FROM mytable') returns:
545	* <pre>
546	* array(
547	* '1' => 'one',
548	* '2' => 'two',
549	* '3' => 'three',
550	* )
551	* </pre>
552	* ...while the call getAssoc('SELECT id,text,date FROM mytable') returns:
553	* <pre>
554	* array(
555	* '1' => array('one', '944679408'),
556	* '2' => array('two', '944679408'),
557	* '3' => array('three', '944679408')
558	* )
559	* </pre>
560	*
561	* If the more than one row occurs with the same value in the
562	* first column, the last row overwrites all previous ones by
563	* default. Use the $group parameter if you don't want to
564	* overwrite like this. Example:
565	* <pre>
566	* getAssoc('SELECT category,id,name FROM mytable', null, null
567	* MDB2_FETCHMODE_ASSOC, false, true) returns:
568	* array(
569	* '1' => array(array('id' => '4', 'name' => 'number four'),
570	* array('id' => '6', 'name' => 'number six')
571	* ),
572	* '9' => array(array('id' => '4', 'name' => 'number four'),
573	* array('id' => '6', 'name' => 'number six')
574	* )
575	* )
576	* </pre>
577	*
578	* Keep in mind that database functions in PHP usually return string
579	* values for results regardless of the database's internal type.
580	*
581	* @param string the SQL query
582	* @param array that contains the types of the columns in the result set
583	* @param array if supplied, prepare/execute will be used
584	* with this array as execute parameters
585	* @param array that contains the types of the values defined in $params
586	* @param bool $force_array used only when the query returns
587	* exactly two columns. If TRUE, the values of the returned array
588	* will be one-element arrays instead of scalars.
589	* @param bool $group if TRUE, the values of the returned array
590	* is wrapped in another array. If the same key value (in the first
591	* column) repeats itself, the values will be appended to this array
592	* instead of overwriting the existing values.
593	*
594	* @return array\|MDB2_Error data on success, a MDB2 error on failure
595	* @access public
596	*/
597	function getAssoc($query, $types = null, $params = array(), $param_types = null,
598	$fetchmode = MDB2_FETCHMODE_DEFAULT, $force_array = false, $group = false)
599	{
600	$db =& $this->getDBInstance();
601	if (PEAR::isError($db)) {
602	return $db;
603	}
604
605	settype($params, 'array');
606	if (empty($params)) {
607	return $db->queryAll($query, $types, $fetchmode, true, $force_array, $group);
608	}
609
610	$stmt = $db->prepare($query, $param_types, $types);
611	if (PEAR::isError($stmt)) {
612	return $stmt;
613	}
614
615	$result = $stmt->execute($params);
616	if (!MDB2::isResultCommon($result)) {
617	return $result;
618	}
619
620	$all = $result->fetchAll($fetchmode, true, $force_array, $group);
621	$stmt->free();
622	$result->free();
623	return $all;
624	}
625	// }}}
626
627	// {{{ executeMultiple()
628
629	/**
630	* This function does several execute() calls on the same statement handle.
631	* $params must be an array indexed numerically from 0, one execute call is
632	* done for every 'row' in the array.
633	*
634	* If an error occurs during execute(), executeMultiple() does not execute
635	* the unfinished rows, but rather returns that error.
636	*
637	* @param resource query handle from prepare()
638	* @param array numeric array containing the data to insert into the query
639	*
640	* @return bool\|MDB2_Error true on success, a MDB2 error on failure
641	* @access public
642	* @see prepare(), execute()
643	*/
644	function executeMultiple(&$stmt, $params = null)
645	{
646	for ($i = 0, $j = count($params); $i < $j; $i++) {
647	$result = $stmt->execute($params[$i]);
648	if (PEAR::isError($result)) {
649	return $result;
650	}
651	}
652	return MDB2_OK;
653	}
654	// }}}
655
656	// {{{ getBeforeID()
657
658	/**
659	* Returns the next free id of a sequence if the RDBMS
660	* does not support auto increment
661	*
662	* @param string name of the table into which a new row was inserted
663	* @param string name of the field into which a new row was inserted
664	* @param bool when true the sequence is automatic created, if it not exists
665	* @param bool if the returned value should be quoted
666	*
667	* @return int\|MDB2_Error id on success, a MDB2 error on failure
668	* @access public
669	*/
670	function getBeforeID($table, $field = null, $ondemand = true, $quote = true)
671	{
672	$db =& $this->getDBInstance();
673	if (PEAR::isError($db)) {
674	return $db;
675	}
676
677	if ($db->supports('auto_increment') !== true) {
678	$seq = $table.(empty($field) ? '' : '_'.$field);
679	$id = $db->nextID($seq, $ondemand);
680	if (!$quote \|\| PEAR::isError($id)) {
681	return $id;
682	}
683	return $db->quote($id, 'integer');
684	} elseif (!$quote) {
685	return null;
686	}
687	return 'NULL';
688	}
689	// }}}
690
691	// {{{ getAfterID()
692
693	/**
694	* Returns the autoincrement ID if supported or $id
695	*
696	* @param mixed value as returned by getBeforeId()
697	* @param string name of the table into which a new row was inserted
698	* @param string name of the field into which a new row was inserted
699	*
700	* @return int\|MDB2_Error id on success, a MDB2 error on failure
701	* @access public
702	*/
703	function getAfterID($id, $table, $field = null)
704	{
705	$db =& $this->getDBInstance();
706	if (PEAR::isError($db)) {
707	return $db;
708	}
709
710	if ($db->supports('auto_increment') !== true) {
711	return $id;
712	}
713	return $db->lastInsertID($table, $field);
714	}
715	// }}}
716	}
717	?>

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