note 91030 added to language.references.pass

To add to what pillepop2003 at yahoo dot de pointed out, in PHP if you call an undefined variable by reference, the variable is created - for example: <?php ini_set('display_errors', true); ini_set('error_reporting', E_ALL); function Test(&$val) { return; } var_dump($foo); // Notice: Undefined variable: foo... // Output: NULL Test($foo); // No notice var_dump($foo); // No notice // Output: NULL ?> So now $foo exists after the pass by reference even though it didn't exist before and wasn't set in the function ---- Server IP: 209.41.74.194 Probable Submitter: 64.246.84.86 ---- Manual Page -- http://www.php.net/manual/en/language.references.pass.php Edit -- https://master.php.net/note/edit/91030 Del: integrated -- https://master.php.net/note/delete/91030/integrated Del: useless -- https://master.php.net/note/delete/91030/useless Del: bad code -- https://master.php.net/note/delete/91030/bad+code Del: spam -- https://master.php.net/note/delete/91030/spam Del: non-english -- https://master.php.net/note/delete/91030/non-english Del: in docs -- https://master.php.net/note/delete/91030/in+docs Del: other reasons-- https://master.php.net/note/delete/91030 Reject -- https://master.php.net/note/reject/91030 Search -- https://master.php.net/manage/user-notes.php