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php 对象直接访问私有属性

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2016-06-23 13:24:39837browse

<?php	header("content-type:text/html;charset=UTF-8");	class Person{		//私有的成员属性,对直接访问象		private $name;		private $age;		private $sex;				//魔术方法 __construct(), __set(), __unset(), __isset(), __unset().....		function __construct($name="name1",$age =20,$sex="女"){			$this->name=$name;			$this->age=$age;			$this->sex=$sex;		}				/*			输出 Cannot access private property Person::$name						对象不能直接访问和设置私有属性的值,但是通过魔术方法__get($proName), __set($proName,$proValue)可以做到.			步骤:				1.重写魔术方法__get($property) , __set($proName,$proValue)				2.用对象直接访问或设置私有属性					$p1->name="对象直接访问私有属性";					echo $p1->name;				3.对象直接访问或设置私有属性时,会自动调用魔法方法__get($proName), __set($proName,$proValue)		*/		function __get($proName){			return $this->$proName;		}				function __set($proName,$proValue){			$this->$proName=$proValue;		}				function say(){			echo "$this->name:我的年龄$this->age,性别:$this->sex<br>";		}				function run(){			$this->left();			$this->right();		}				private function left(){			echo "left";		}				private function right(){			echo "right";		}				//析构方法,对象销毁前自动调用		function __destruct(){			echo "$this->name:我走了<br>";		}	}	 	$p1 = new Person("name1",15,"女");	$p2 = new Person("name2",20,"男");	$p3 = new Person("name3",30,"女");					/*		对象直接访问或设置私有属性	*/	$p1->name="对象直接访问私有属性";	echo $p1->name."<br>";		/*	输出,注意__destruct()的输出顺序			name1:我的年龄15,性别:女		name2:我的年龄20,性别:男		name3:我的年龄30,性别:女				name1:我走了		name3:我走了		name2:我走了	*/	$p1->say();	$p2->say();	$p3->say();	$p1=null;		?>


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