note 23341 added to language.references

Note that creating a reference to a non-existing array element causes that element to be created with a null value. For example: var_dump($username); // => NULL var_dump($session); // => NULL $username =& $session['username']; var_dump($username); // => NULL var_dump($session); // => array(1) { ["username"]=> &NULL } -- http://www.php.net/manual/en/language.references.php http://master.php.net/manage/user-notes.php?action=edit+23341 http://master.php.net/manage/user-notes.php?action=delete+23341 http://master.php.net/manage/user-notes.php?action=reject+23341