note 101538 added to control-structures.foreach

To Mark Rose ------------------- If you just put var_dump($foo) inside your second for loop, you will understand what is happening. Once your first loop is finished, $bar has a reference to the third element of the array $foo. Therefore, during the second loop, the third element is replaced with the first, then second and so on until the second last element. Then the loop ends. Thus, you found that the third element had been set with the value of the second last element of the array. $foo = array('one', 'two', 'three'); foreach ($foo as &$bar) { // no-op } var_dump($foo); foreach ($foo as $bar) { var_dump($foo); } Output: ----------------- array(3) { [0]=> string(3) "one" [1]=> string(3) "two" [2]=> &string(5) "three" } array(3) { [0]=> string(3) "one" [1]=> string(3) "two" [2]=> &string(3) "one" } array(3) { [0]=> string(3) "one" [1]=> string(3) "two" [2]=> &string(3) "two" } array(3) { [0]=> string(3) "one" [1]=> string(3) "two" [2]=> &string(3) "two" } ---- Server IP: 69.147.83.197 Probable Submitter: 128.250.80.15 ---- Manual Page -- http://www.php.net/manual/en/control-structures.foreach.php Edit -- https://master.php.net/note/edit/101538 Del: integrated -- https://master.php.net/note/delete/101538/integrated Del: useless -- https://master.php.net/note/delete/101538/useless Del: bad code -- https://master.php.net/note/delete/101538/bad+code Del: spam -- https://master.php.net/note/delete/101538/spam Del: non-english -- https://master.php.net/note/delete/101538/non-english Del: in docs -- https://master.php.net/note/delete/101538/in+docs Del: other reasons-- https://master.php.net/note/delete/101538 Reject -- https://master.php.net/note/reject/101538 Search -- https://master.php.net/manage/user-notes.php