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run code in 300+ PHP versions simultaneously
<?php class SubObject { static $instances = 0; public $instance; public function __construct() { $this->instance = ++self::$instances; } public function __clone() { $this->instance = ++self::$instances; } } class MyCloneable { public $object1; public $object2; function __clone() { // Force a copy of this->object, otherwise // it will point to same object. $this->object1 = clone $this->object1; } } $obj = new MyCloneable(); $obj->object1 = new SubObject(); $obj->object2 = new SubObject(); $obj2 = clone $obj; print("Original Object:\n"); print_r($obj); print("Cloned Object:\n"); print_r($obj2);

preferences:
36.12 ms | 402 KiB | 5 Q