note 86313 added to function.isset

You can safely use isset to check properties and subproperties of objects directly. So instead of writing isset($abc) && isset($abc->def) && isset($abc->def->ghi) or in a shorter form isset($abc, $abc->def, $abc->def->ghi) you can just write isset ($abc->def->ghi) without raising any errors, warnings or notices. Examples <?php $abc = (object) array("def" => 123); var_dump(isset($abc)); // bool(true) var_dump(isset($abc->def)); // bool(true) var_dump(isset($abc->def->ghi)); // bool(false) var_dump(isset($abc->def->ghi->jkl)); // bool(false) var_dump(isset($def)); // bool(false) var_dump(isset($def->ghi)); // bool(false) var_dump(isset($def->ghi->jkl)); // bool(false) var_dump($abc); // object(stdClass)#1 (1) { ["def"] => int(123) } var_dump($abc->def); // int(123) var_dump($abc->def->ghi); // null / E_NOTICE: Trying to get property of non-object var_dump($abc->def->ghi->jkl); // null / E_NOTICE: Trying to get property of non-object var_dump($def); // null / E_NOTICE: Trying to get property of non-object var_dump($def->ghi); // null / E_NOTICE: Trying to get property of non-object var_dump($def->ghi->jkl); // null / E_NOTICE: Trying to get property of non-object ?> ---- Server IP: 217.160.72.57 Probable Submitter: 77.179.204.243 ---- Manual Page -- http://www.php.net/manual/en/function.isset.php Edit -- https://master.php.net/note/edit/86313 Del: integrated -- https://master.php.net/note/delete/86313/integrated Del: useless -- https://master.php.net/note/delete/86313/useless Del: bad code -- https://master.php.net/note/delete/86313/bad+code Del: spam -- https://master.php.net/note/delete/86313/spam Del: non-english -- https://master.php.net/note/delete/86313/non-english Del: in docs -- https://master.php.net/note/delete/86313/in+docs Del: other reasons-- https://master.php.net/note/delete/86313 Reject -- https://master.php.net/note/reject/86313 Search -- https://master.php.net/manage/user-notes.php