PHP各种魔术方法测试

<?php
    #自动加载方法,当new一个class时,若class未被引入,则会自动调用__autoload()方法
    function __autoload($className) {
        include $className . ".php";
    }

    class Son {
        private $name;
        
        public function __construct($name) {
            $this->name = $name;
        }
        
        #echo输出类时,自动调用此方法
        public function __toString() {
            return $this->name;
        }
    }

    class Man {
        private $name;
        private $age;
        private $son;
        
        public function __construct($name, $age, Son $son) {
            $this->name = $name;
            $this->age = $age;
            $this->son = $son;
        }
        
        #析构方法,当脚本结束或调用unset()时执行此方法
        public function __destruct() {
            echo "Destruct: I'm {$this->name}, I was killed at " . date("Y-m-d H:i:s") . "<br>";
        }
        
        public function __toString() {
            return "toString: I'm {$this->name}, and {$this->age} years old, my son is {$this->son}.<br>";
        }
        
        #当调用一个不存在的function时,自动调用此方法
        public function __call($funcName, $args) {
            echo "Call: You call func \"{$funcName}\" with args \"" . serialize($args) . "\" ? It's not existed.<br>";
        }
        
        #当调用一个不存在的static function时,自动调用此方法
        public static function __callStatic($funcName, $args) {
            echo "callStatic: You call static func \"{$funcName}\" with args \"" . serialize($args) . "\" ? It's not existed.<br>";
        }
        
        #当调用get而$varName不存在时,自动调用此方法
        public function __get($varName) {
            return "Get: You call the variable \"{$varName}\" ? It's not existed.<br>";
        }
        
        #当调用set而$varName不存在时,自动调用此方法
        public function __set($varName, $val) {
            echo "Set: You want to assign value \"{$val}\" to variable \"{$varName}\" ? It's not existd.<br>";
        }
        
        #当调用isset而$varName不存在时,自动调用此方法
        public function __isset($varName) {
            echo "Isset: Tell you, the variable \"{$varName}\" is not existed.<br>";
        }
        
        #当调用unset而$varName不存在时,自动调用此方法
        public function __unset($varName) {
            echo "Unset: Tell you, the variable \"{$varName}\" has never been existed.<br>";
        }
        
        #调用serialize()前,会先执行此方法,serialize()只序列化__sleep()方法返回的成员变量
        public function __sleep() {
            return array("name");
        }
        
        #调用unserialize()前,会先执行此方法
        public function __wakeup() {
            $this->age = "21";
        }
        
        #当将class当做function调用时,会执行此方法
        public function __invoke($var) {
            echo "You want to invoke class \"" . __CLASS__ . "\" as a func with args \"{$var}\"? No! That's wrong!<br>";
        }
        
        #调用clone时,会执行此方法
        public function __clone() {
            $this->son = clone $this->son;    #此处进行深复制,强制将对象型成员变量复制一份新拷贝,否则只是复制对象引用
        }
    }
    
    $man = new Man("Jack", 18, new Son("Dick"));
    $man->smoke("Camle cigarette");    #测试__call()
    Man::drink(array("juice", "water"));    #测试__callStatic()
    echo $man->wife;    #测试__get()
    $man->wife = "Rose";    #测试__set()
    isset($man->daughter);    #测试__isset()
    unset($man->daughter);    #测试__unset()
    echo serialize($man) . "<br>";    #测试__sleep()
    echo unserialize(serialize($man));    #测试__wakeup()
    $man("kiss");    #测试__invoke()
    $manNew = clone $man;    #测试__clone()
    echo $manNew;
    $woman = new Woman();    #测试__autoload()
?>

页面输出

Call: You call func "smoke" with args "a:1:{i:0;s:15:"Camle cigarette";}" ? It's not existed.
callStatic: You call static func "drink" with args "a:1:{i:0;a:2:{i:0;s:5:"juice";i:1;s:5:"water";}}" ? It's not existed.
Get: You call the variable "wife" ? It's not existed.
Set: You want to assign value "Rose" to variable "wife" ? It's not existd.
Isset: Tell you, the variable "daughter" is not existed.
Unset: Tell you, the variable "daughter" has never been existed.
O:3:"Man":1:{s:9:"Manname";s:4:"Jack";}
toString: I'm Jack, and 21 years old, my son is .
Destruct: I'm Jack, I was killed at 2012-08-11 20:00:34
You want to invoke class "Man" as a func with args "kiss"? No! That's wrong!
Destruct: I'm Jack, I was killed at 2012-08-11 20:00:34