PHP 序列化和反序列化函数实例详解

$arr=array();
$arr['name']='张三';
$arr['age']='22';
$arr['sex']='男';
$arr['phone']='123456789';
$arr['address']='上海市浦东新区';
var_dump($arr)；

array(5) { 
["name"]=> string(6) "张三" 
["age"]=> string(2) "22" 
["sex"]=> string(3) "男" 
["phone"]=> string(9) "123456789" 
["address"]=> string(21) "上海市浦东新区"
 } 

$info=serialize($arr);
var_dump($info);

string(140) "a:5:{s:4:"name";s:6:"张三";s:3:"age";s:2:"22";s:3:"sex";s:3:"男";s:5:"phone";s:9:"123456789";s:7:"address";s:21:"上海市浦东新区";}" 

$zhangsan=unserialize($info);
var_dump($zhangsan);

array(5) {
["name"]=> string(6) "张三" 
["age"]=> string(2) "22" 
["sex"]=> string(3) "男" 
["phone"]=> string(9) "123456789" 
["address"]=> string(21) "上海市浦东新区" 
}

<?php
  class aa{
    public $a = 1;
    private $b = 2;
    protected $c = 3;
 
    function afun(){
      return $this->a;
    }
    function bfun(){
      return $this->b;
    }
    function __destruct(){
      echo "变量销毁了";
    }
  }
 
  $v = new aa;
  echo $v->afun();
  $se = serialize($v);
  unset($v); //这里先销毁$v，这个时候会自动调用析构函数
  echo "<hr />";
  $v = unserialize($se); //再反序列化
  echo $v->bfun();

<?php
  class aa{
    public $a = 1;
    private $b = 2;
    protected $c = 3;
 
    function afun(){
      return '$a的值是：'.$this->a;
    }
    function bfun(){
      return '$b的值是：'.$this->b;
    }
  }

<?php
  require './demo8.php';
  Session_start();
  $v = new aa();
  $_SESSION['v'] = serialize($v);

<?php
  require './demo8.php';
  Session_start();
  $v = unserialize($_SESSION['v']);
  echo $v->bfun();