<?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 $str.'<br>'; var_dump($str); $c = unserialize($str); //反序列化為對象 var_dump($c);
輸出前面的O:3:"Car":1:{s:4:"name";s:7:"new car";}能逐個字逐個字解釋嗎?
2014-09-24
o表示對象類型,3表示Car是3個字符,1表示只有1個對象,里面包含了s表示字符類型,4表示4個字符name