ID: 32910 User updated by: bugs dot php dot net at enca dot cz Reported By: bugs dot php dot net at enca dot cz Status: Open Bug Type: Session related Operating System: MS Windows Server 2003 PHP Version: 5.0.4 New Comment:
thx, this workaround is working for me Previous Comments: ------------------------------------------------------------------------ [2005-05-03 11:46:35] stocker at vision-e dot ch Workaround for the reported problem foreach-iterating $_SESSION with unset() inside the loop: $unset_collection = array(); // 1. Collect the Session-Variable to unset, // because unset inside the foreach-loop will not work. foreach ($_SESSION as $sessvar => $sessval) { if ($sessvar != "A") { array_push($unset_collection,$sessvar); } } // 2. Unset the session variables outside the foreach foreach ($unset_collection as $sessvar) { unset($_SESSION[$sessvar]); } Comment: Changing a loop control variable inside of a loop is not good programming style. Just this happens, if adding or removing a $_SESSION variable inside of a foreach for $_SESSION. The solution is extracting the the processes of unseting or adding outside of that loop. ------------------------------------------------------------------------ [2005-05-02 14:09:35] bugs dot php dot net at enca dot cz It doesn't work for me :-( I tried this code in PHP Version 5.0.5-dev Build Date Apr 26 2005 02:18:08 but the result is the same as in 5.0.4 I'm using php.ini-recomended without modifications ------------------------------------------------------------------------ [2005-05-02 13:40:12] [EMAIL PROTECTED] Please try using this CVS snapshot: http://snaps.php.net/php5-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php5.0-win32-latest.zip Works fine for me.. ------------------------------------------------------------------------ [2005-05-02 11:14:48] bugs dot php dot net at enca dot cz Description: ------------ In this testcase the "write" function is not called. If you remove line with "unset", the write function is called properly. If you delete whole foreach cycle and use "unset($_SESSION['A']);" instead, the "write" function si also called - as expected. This bug appear only when you call "unset" inside foreach cycle. My environment: MS Windows Server 2003 SE (Windows NT 5.2 build 3790) Apache/2.0.53 (Win32) PHP/5.0.4 Smilar (but not exactly same) bug is described as #32564, but it is in the No feedback status and there is no way (for me) to change this status. I hope that this "reproduce code" is much better then codes from #32564 I can provide more information if you ask for them. Reproduce code: --------------- <?php function foo(){return(true);} function read($id){ return 'A|s:1:"a";B|s:1:"b";'; } function write($id, $sess_data){ print "I'm writing this data: $sess_data\n"; return true; } header('Content-Type: text/plain'); session_set_save_handler("foo", "foo", "read", "write", "foo", "foo"); session_start(); print_r($_SESSION); foreach($_SESSION as $lsKey => $lsVal){ if($lsKey != 'A'){ unset($_SESSION[$lsKey]); //<<<<<<<< if you comment this line, the write function is called properly } } print_r($_SESSION); ?> Expected result: ---------------- Array ( [A] => a [B] => b ) Array ( [A] => a ) I'm writing this data: A|s:1:"a"; Actual result: -------------- Array ( [A] => a [B] => b ) Array ( [A] => a ) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=32910&edit=1