<?php
class Car {
??? public $name = 'car';
?? ?
??? public function __clone() {
??????? $obj = new Car();
??????? $obj->name = $this->name;
??? }
}
$a = new Car();
$a->name = 'new car';
$b = clone $a;
if ($a == $b) echo '==';?? //true
if ($a === $b) echo '==='; //false


$str = serialize($a); //對象序列化成字符串
//echo $str.'<br>';
$c = unserialize($str); //反序列化為對象
echo $c->name;
//var_dump($c);
//print "$c->name";