note 81033 added to language.variables.variable

These are the scenarios that you may run into trying to reference superglobals dynamically. Whether or not it works appears to be dependent upon the current scope. <?php $_POST['asdf'] = 'something'; function test() { // NULL -- not what initially expected $string = '_POST'; var_dump(${$string}); // Works as expected var_dump(${'_POST'}); // Works as expected global ${$string}; var_dump(${$string}); } // Works as expected $string = '_POST'; var_dump(${$string}); test(); ?> ---- Server IP: 69.147.83.197 Probable Submitter: 74.172.164.202 ---- Manual Page -- http://www.php.net/manual/en/language.variables.variable.php Edit -- https://master.php.net/note/edit/81033 Del: integrated -- https://master.php.net/note/delete/81033/integrated Del: useless -- https://master.php.net/note/delete/81033/useless Del: bad code -- https://master.php.net/note/delete/81033/bad+code Del: spam -- https://master.php.net/note/delete/81033/spam Del: non-english -- https://master.php.net/note/delete/81033/non-english Del: in docs -- https://master.php.net/note/delete/81033/in+docs Del: other reasons-- https://master.php.net/note/delete/81033 Reject -- https://master.php.net/note/reject/81033 Search -- https://master.php.net/manage/user-notes.php