PHP Object Serialization The Serializable interface
Example
Introduction
Classes that implement this interface no longer support
__sleep()and__wakeup(). The method serialize is called whenever an instance needs to be serialized. This does not invoke__destruct()or has any other side effect unless programmed inside the method. When the data isunserializedthe class is known and the appropriateunserialize()method is called as a constructor instead of calling__construct(). If you need to execute the standard constructor you may do so in the method.
Basic usage
class obj implements Serializable {
private $data;
public function __construct() {
$this->data = "My private data";
}
public function serialize() {
return serialize($this->data);
}
public function unserialize($data) {
$this->data = unserialize($data);
}
public function getData() {
return $this->data;
}
}
$obj = new obj;
$ser = serialize($obj);
var_dump($ser); // Output: string(38) "C:3:"obj":23:{s:15:"My private data";}"
$newobj = unserialize($ser);
var_dump($newobj->getData()); // Output: string(15) "My private data"
