PHP: オブジェクトと参照 - ManualNotes on reference: A reference is not a pointer. However, an object handle IS a pointer. Example: <?php class Foo { private static $used; private $id; public function __construct() { $id = $used++; } public function __clone() { $id = $used++; } } $a = new Foo; // $a is a pointer pointing to Foo object 0 $b = $a; // $b is a pointer pointing to Foo object 0, however, $b is a copy of $a $c = &$a; //
