note 110909 added to function.isset

edsko and yarco mentioned that isset() is not working as we expect, to use my_isset(): <?php $a=array(2=>'abc'); function my_isset($var_expr, $defined_vars) {extract($defined_vars); if (substr($var_expr, -1)===']') {$tmp=explode('[', $var_expr); $k=substr(array_pop($tmp), 0, -1); $v=implode('[', $tmp); return eval("return @array_key_exists({$k}, {$v});"); } $name=substr($var_expr, 1); return @array_key_exists($name, $defined_vars); } var_export(my_isset('$a[2][\'kkk\']', get_defined_vars())); ?> ---- Server IP: 69.147.83.199 Probable Submitter: 27.115.50.210 ---- Manual Page -- http://php.net/manual/en/function.isset.php Edit -- https://master.php.net/note/edit/110909 Del: integrated -- https://master.php.net/note/delete/110909/integrated Del: useless -- https://master.php.net/note/delete/110909/useless Del: bad code -- https://master.php.net/note/delete/110909/bad+code Del: spam -- https://master.php.net/note/delete/110909/spam Del: non-english -- https://master.php.net/note/delete/110909/non-english Del: in docs -- https://master.php.net/note/delete/110909/in+docs Del: other reasons-- https://master.php.net/note/delete/110909 Reject -- https://master.php.net/note/reject/110909 Search -- https://master.php.net/manage/user-notes.php