note 72077 added to function.isset

Beware that the chk() function below creates the variable or the array index if it didn't existed. <?php function chk(&$var) { if (!isset($var)) return NULL; else return $var; } echo '<pre>'; $a = array(); var_dump($a); chk($a['b']); var_dump($a); echo '</pre>'; // Gives: // array // empty // // array // 'b' => null ?> ---- Server IP: 194.246.101.61 Probable Submitter: 82.238.35.175 ---- Manual Page -- http://www.php.net/manual/en/function.isset.php Edit -- https://master.php.net/note/edit/72077 Del: integrated -- https://master.php.net/note/delete/72077/integrated Del: useless -- https://master.php.net/note/delete/72077/useless Del: bad code -- https://master.php.net/note/delete/72077/bad+code Del: spam -- https://master.php.net/note/delete/72077/spam Del: non-english -- https://master.php.net/note/delete/72077/non-english Del: in docs -- https://master.php.net/note/delete/72077/in+docs Del: other reasons-- https://master.php.net/note/delete/72077 Reject -- https://master.php.net/note/reject/72077 Search -- https://master.php.net/manage/user-notes.php