note 92123 added to language.oop5.basic

stdClass is the default PHP object. stdClass has no properties, methods or parent. It does not support magic methods, and implements no interfaces. When you cast a scalar or array as Object, you get an instance of stdClass. You can use stdClass whenever you need a generic object instance. <?php // ways of creating stdClass instances $x = new stdClass; $y = (object) null; // same as above $z = (object) 'a'; // creates property 'scalar' = 'a' $a = (object) array('property1' => 1, 'property2' => 'b'); ?> stdClass is NOT a base class! PHP classes do not automatically inherit from any class. All classes are standalone, unless they explicitly extend another class. PHP differs from many object-oriented languages in this respect. <?php // CTest does not derive from stdClass class CTest { public $property1; } $t = new CTest; var_dump($t instanceof stdClass); // false var_dump(is_subclass_of($t, 'stdClass')); // false echo get_class($t) . "\n"; // 'CTest' echo get_parent_class($t) . "\n"; // false (no parent) ?> You cannot define a class named 'stdClass' in your code. That name is already used by the system. You can define a class named 'Object'. You could define a class that extends stdClass, but you would get no benefit, as stdClass does nothing. (tested on PHP 5.2.8) ---- Server IP: 69.147.83.197 Probable Submitter: 76.231.221.254 ---- Manual Page -- http://www.php.net/manual/en/language.oop5.basic.php Edit -- https://master.php.net/note/edit/92123 Del: integrated -- https://master.php.net/note/delete/92123/integrated Del: useless -- https://master.php.net/note/delete/92123/useless Del: bad code -- https://master.php.net/note/delete/92123/bad+code Del: spam -- https://master.php.net/note/delete/92123/spam Del: non-english -- https://master.php.net/note/delete/92123/non-english Del: in docs -- https://master.php.net/note/delete/92123/in+docs Del: other reasons-- https://master.php.net/note/delete/92123 Reject -- https://master.php.net/note/reject/92123 Search -- https://master.php.net/manage/user-notes.php