php—Serializable interface

Customized serialization interface.

Classes implementing this interface will no longer support __sleep() and __wakeup(). Whenever an instance needs to be serialized, the serialize method will be called. It will not call __destruct() or have other effects unless this method is called programmatically. When data is deserialized, the class will be aware and call the appropriate unserialize() method instead of calling __construct(). If you need to execute the standard constructor, you should handle it in this method.

Interface Summary

Serializable {
    /* 方法 */
    abstract public string serialize ( void )
    abstract public mixed unserialize ( string $serialized )
}

Example #1 Usage Example

<?php
    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);
    $newobj = unserialize($ser);
    var_dump($newobj->getData());
?>

The output of the above routine is similar to:

string(15) "My private data"

Method List

Serializable::serialize — String representation of the object

Serializable::unserialize — Construct Object

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