#40705 [Com]: Iterating within function moves original array pointer

ID: 40705 Comment by: jamesgauth at gmail dot com Reported By: avb@php.net Status: Assigned Bug Type: Arrays related Operating System: Irrelevant PHP Version: 5.2.1 Assigned To: dmitry New Comment: This problem occurs in copies of an object's properties too. The array pointer is advanced by foreach in both the original and the copied variable. <?php class foo { var $arr = array(1, 2, 3); function test() { var_dump(key($this->arr)); $array_copy = $this->arr; foreach ($array_copy as $val) {} } } $a = new foo(); $a->test(); $a->test(); ?> Previous Comments: ------------------------------------------------------------------------ [2007-03-19 19:59:31] ashnazg@php.net Tested this example against the 5.2.1 zipfile from php.net on WinXP and the problem does occur. Also tested it against the 5.2 snapshot (php5.2-win32-200703191630.zip) from php.net, on WinXP, and the problem seems to still exist. ------------------------------------------------------------------------ [2007-03-06 13:19:09] dmitry@php.net The same as http://bugs.php.net/bug.php?id=40509 ------------------------------------------------------------------------ [2007-03-03 12:31:20] avb@php.net Description: ------------ If an array is passed by value to the function and is iterated over within said function, the "internal pointer" of the original array is moved. Reproduce code: --------------- function doForeach($array) { foreach ($array as $k => $v) { // do stuff } } $foo = array('foo', 'bar', 'baz'); doForeach($foo); var_dump(key($foo)); Expected result: ---------------- int(0) (returned by versions prior to 5.2.1) Actual result: -------------- NULL (returned by version 5.2.1 and current 5.2 snapshot) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=40705&edit=1