note 46777 added to function.array-intersect-key

From: Date: Fri, 22 Oct 2004 20:07:05 +0000
Subject: note 46777 added to function.array-intersect-key
Groups: php.notes 
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Behold! An implementation of this function for PHP < CVS! <?php if (!function_exists("array_intersect_key")) { /** * Computes the intersection of arrays using keys for comparison * * implementation of PHP' CVS array_intersect_key() * * array_intersect_key() returns an array containing all the values * of array1 which have matching keys that are present in all the * arguments. * * might not be exactly equivalent with php.net/array_intersect_key * since we do not use === for comparison. * * will trigger an warning and return FALSE if one of the arguments * is not an array or if less than one argument is given. * * @see http://php.net/array_intersect_key * * @author: The Anarcat * @license: public domain */ function array_intersect_key() { $arrays =& func_get_args(); // if only one array is given as argument, just return it if (count($arrays) == 1) return $arrays; elseif (count($arrays) < 1) { trigger_error("not enough arguments given, ". count($arrays) ." given, > 1 needed", E_USER_WARNING); return FALSE; } $array1 = array_shift($arrays); foreach ($array1 as $key => $val) { for ($i = 0; $i < count($arrays); $i++) { $array =& $arrays[$i]; if (!is_array($array)) { trigger_error("argument $i is not an array", E_USER_WARNING); return FALSE; } if (!isset($array[$key])) { unset($array1[$key]); } } } return $array1; } } ?> ---- Manual Page -- http://www.php.net/manual/en/function.array-intersect-key.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+46777 Delete -- http://master.php.net/manage/user-notes.php?action=delete+46777&report=yes Reason: bad code -- http://master.php.net/manage/user-notes.php?action=delete+46777&report=yes&reason=bad+code Reason: spam -- http://master.php.net/manage/user-notes.php?action=delete+46777&report=yes&reason=spam Reason: useless example -- http://master.php.net/manage/user-notes.php?action=delete+46777&report=yes&reason=useless+example Reason: contains commercial links -- http://master.php.net/manage/user-notes.php?action=delete+46777&report=yes&reason=contains+commercial+links Reason: useless note -- http://master.php.net/manage/user-notes.php?action=delete+46777&report=yes&reason=useless+note Reject -- http://master.php.net/manage/user-notes.php?action=reject+46777&report=yes Search -- http://master.php.net/manage/user-notes.php

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