<?php
classMagic
{
public $var =‘test‘;
//构造函数,在创建对象的时候调用
publicfunction __construct()
{
echo ‘__construct called‘.PHP_EOL;
}
//某个对象的引用都被删除、对象被销毁、调用exit()后、脚本关闭时被调用
publicfunction __destruct()
{
echo ‘__destruct called‘.PHP_EOL;
}
//当给不可访问或不存在属性赋值时被调用
publicfunction __set($name, $value)
{
echo $name.‘-‘.$value;
echo ‘__set called‘.PHP_EOL;
}
//读取不可访问或不存在属性时被调用
publicfunction __get($name)
{
echo $name;
echo ‘__get called‘.PHP_EOL;
}
//调用不可访问或不存在的方法时被调用
publicfunction __call($name, $arguments)
{
echo $name .‘-‘. implode(‘,‘, $arguments);
echo ‘__call called‘.PHP_EOL;
}
//调用不可访问或不存在的静态方法时被调用
publicstaticfunction __callStatic($name, $arguments)
{
echo $name .‘-‘. implode(‘,‘, $arguments);
echo ‘__callStatic called‘.PHP_EOL;
}
//对不可访问或不存在的属性调用isset()或empty()时被调用
publicfunction __isset($name)
{
echo $name;
echo ‘__isset called‘.PHP_EOL;
returntrue;
}
//对不可访问或不存在的属性进行unset时被调用
publicfunction __unset($name)
{
echo $name;
echo ‘__unset called‘.PHP_EOL;
}
//serialize时被调用，当你不需要保存大对象的所有数据时很有用
publicfunction __sleep()
{
echo ‘__sleep called‘.PHP_EOL;
return array(‘var1111111111‘);
}
//unserialize时被调用，可用于做些对象的初始化操作
publicfunction __wakeup()
{
echo ‘__wakeup called‘.PHP_EOL;
$this->var=‘test after wakeup‘;
}
//当一个类被转换成字符串时被调用
publicfunction __toString()
{
return‘__toString called‘.PHP_EOL;
}
//进行对象clone时被调用，用来调整对象的克隆行为
publicfunction __clone()
{
echo ‘__clone called‘.PHP_EOL;
}
//当以函数方式调用对象时被调用
publicfunction __invoke()
{
echo ‘__invoke called‘.PHP_EOL;
}
//当调用var_export()导出类时，此静态方法被调用。用__set_state的返回值做为var_export的返回值。
publicstaticfunction __set_state($arr)
{
return‘__set_state called‘.PHP_EOL;
}
//当调用var_dump()打印对象时被调用（当你不想打印所有属性）适用于PHP5.6版本
publicfunction __debuginfo($arr)
{
echo ‘__debuginfo called‘.PHP_EOL;
return array(
‘var‘=>‘test fro __debuginfo‘
);
}
}
$m =newMagic();//__construct()被调用
$m->not_exist_property = test;//__set()被调用
echo $m->not_exist_property;//__get()被调用
$m->abc(1,2,3);//__call()被调用
echo isset($m->not_exist_property);//__isset()被调用，返回bool值
unset($m->not_exist_property);//__unset()被调用
echo $tmp = serialize($m);//__sleep()被调用
unserialize($tmp);//__wakeup()被调用
$m1 = clone $m;//__clone()被调用，对象默认是引用传递，使用clone关键词则可实现对象复制
$m();//__invoke()
eval(‘$m2 = ‘. var_export ( $m ,true).‘;‘);var_dump($m2);
var_dump($m);
//最后__destruct()被调用
/*
结果：
__construct called
not_exist_property-test__set called
not_exist_property__get called
abc-1,2,3__call called
not_exist_property__isset called
1not_exist_property__unset called
__sleep called
O:5:"Magic":1:{s:13:"var1111111111";N;}__wakeup called
__destruct called
__clone called
__invoke called
string(20) "__set_state called
"
class Magic#1 (1) {
public $var =>
string(4) "test"
}
__destruct called
__destruct called
*/