1 <?php
2 class Test
3 {
4     var $test = 'aaa';
5 }
6 $Test1 = new Test();
7 $Test1_ser = serialize($Test1);
8 echo $Test1_ser;
9 ?>

O:4:"Test":1:{s:4:"test";s:3:"aaa";}

<?php
include "serialized.php";
$str = 'O:4:"Test":1:{s:4:"test";s:3:"aaa";}';
$a = unserialize($str);
print_r($a);
?>

<?php
class Test
{
    public $var1 = 'hello';
    public $var2 = 'world';
    public function Printvar()
    {
        echo $this->var1.' '.$this->var2.'<br />';
    }
    public function __construct()
    {
        echo '__construct<br />';
    }
    public function __destruct()
    {
        echo '__destruct<br />';
    }
    public function __wakeup()
    {
        echo '__wakeup<br />';
    }
    public function __sleep()
    {
        echo '__sleep<br />';
        
        return array('var1','var2');
    }
}

//创建对象调用__construct
$object = new Test();

//序列化对象调用 __sleep
$serialize = serialize($object);

//输入序列化后的字符串
echo 'Serialize:'.$serialize.'<br />';

//重建对象调用__wakeup
$object = unserialize($serialize);

//调用Printvar方法
$object->Printvar();

//脚本结束调用__destruct

?>

<?php
class Popdemo
{
    public $data = "demo";
    public $filename = "./demo.txt";
    public function __construct()    
    {    
        echo '__construct <br />';    
    }    
    public function __wakeup()
    {
        echo '__wakeup <br />';
    }
    public function __destruct()
    {
        echo '__destruct <br/>';
        //$this->save();
    }
    public function save()
    {
        file_put_contents($this->filename,$this->data);
    }
}
$object = new Popdemo();
$object->save();
$newobj = serialize($object);
echo $newobj.'<br />';
file_put_contents('./pop_serialized.txt',$newobj);

?>

<?php
    include 'popdemo.php';
    $pop = file_get_contents('./pop_serialized.txt');
    $newobjt = unserialize($pop);
    var_dump($newobjt);
　　 $newobjt->save();
?>         

<?php
class Popdemo
{
    public $data = "demo";
    public $filename = "./demo.txt";
    public function __construct()    
    {    
        echo '__construct <br />';    
    }    
    public function __wakeup()
    {
        echo '__wakeup <br />';
    }
    public function __destruct()
    {
        echo '__destruct <br/>';
        $this->save();
    }
    public function save()
    {
        file_put_contents($this->filename,$this->data);
    }
}
?>