note 106208 added to language.references.pass

Please note that you can't pass NULL to a function by reference, unless it's as a default value. <?php function foo(&$a = NULL) { if ($a === NULL) { echo "NULL\n"; } else { echo "$a\n"; } } foo(); // "NULL" foo(5); // "5" foo(NULL); // Produces an error ?> ---- Server IP: 69.147.83.197 Probable Submitter: 150.101.112.15 ---- Manual Page -- http://www.php.net/manual/en/language.references.pass.php Edit -- https://master.php.net/note/edit/106208 Del: integrated -- https://master.php.net/note/delete/106208/integrated Del: useless -- https://master.php.net/note/delete/106208/useless Del: bad code -- https://master.php.net/note/delete/106208/bad+code Del: spam -- https://master.php.net/note/delete/106208/spam Del: non-english -- https://master.php.net/note/delete/106208/non-english Del: in docs -- https://master.php.net/note/delete/106208/in+docs Del: other reasons-- https://master.php.net/note/delete/106208 Reject -- https://master.php.net/note/reject/106208 Search -- https://master.php.net/manage/user-notes.php