~~~ <?php interface Prototype{public function copy();} class ConcreatePrototype implements Prototype{ private $_obj; public function __construct($obj){ $this->_obj = $obj; } public function copy(){return clone $this;} } class Demo{} $demo = new Demo(); $obj1 = new ConcreatePrototype($demo); $obj2 = $obj1->copy(); var_dump($obj1,$obj2); ~~~ 构造多个相同的对象 [root@centos6 dp]# php prototype.php object(ConcreatePrototype)#2 (1) { ["_obj":"ConcreatePrototype":private]=> object(Demo)#1 (0) { } } object(ConcreatePrototype)#3 (1) { ["_obj":"ConcreatePrototype":private]=> object(Demo)#1 (0) { } }