ID: 33360 User updated by: luca dot fabbro at procne dot it Reported By: luca dot fabbro at procne dot it Status: Bogus Bug Type: Session related Operating System: Linux PHP Version: 4.3.10 New Comment:
I'm just a bit confused. When I redeclare $pointer I suppose that a kind of unset was done on old value of $pointer. I was thinking that previous references were destroyed. In the loop in fact I'll lose the ability to unset the pointers if I don't do it before redeclaring $pointer. In my example if previous pointers were destroyed I have to notice this "strange" behaviour only on the last element of array. If reference is put in a function things of course change as exiting from the function there is an automatic unset of the local $pointer variable. In this way the last element of the array isn't a reference as the previous ones. Previous Comments: ------------------------------------------------------------------------ [2005-06-16 12:55:28] [EMAIL PROTECTED] With "$pointer = &$_SESSION['storage'][$i];" you turn $_SESSION['storage'][$i]; into a reference. But: "Note: If array with references is copied, its values are not dereferenced. This is valid also for arrays passed by value to functions." http://www.php.net/manual/en/language.references.whatdo.php This is also has nothing to do with _SESSION as it can be reproduce on this code too: <?php $a['storage'][] = array('items'=> 0); $pointer = &$a['storage'][0]; $gitems = $a['storage']; $gitems[0]['foo'] = 2; var_dump($a); ?> ------------------------------------------------------------------------ [2005-06-16 12:35:02] luca dot fabbro at procne dot it Description: ------------ Seems that once you've declared a pointer to one of the items in session superglobal any other assignment of a variable to that session item is alwayys treated as a pointer. Tested on various versions of php 4.3 till 4.3.1 Register globals are OFF php 5.0.4 having same error Reproduce code: --------------- session_start(); for ($i = 0; $i < 2; $i++) { $_SESSION['storage'][$i] = array('items'=>$i); } $items = count($_SESSION['storage']); for ($i = 0; $i < $items; $i++) { $pointer = &$_SESSION['storage'][$i]; // unset($pointer); // Uncomment me to let me work properly } $gitems = $_SESSION['storage']; foreach ($gitems as $key=>$val) { $gitems[$key]['foo'] = time(); } Expected result: ---------------- $_SESSION = Array ( [storage] => Array ( [0] => Array ( [items] => 0 ) [1] => Array ( [items] => 1 ) ) ) Actual result: -------------- $_SESSION = Array ( [storage] => Array ( [0] => Array ( [items] => 0 [foo] => 1118913576 ) [1] => Array ( [items] => 1 [foo] => 1118913576 ) ) ) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=33360&edit=1
