PHP中的$this用法
欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入 this是指向当前对象的指针[php] view plaincopyprint? class human{ public $name="李四"; public function eat(){ echo $this-name,'在吃饭'; } public function test(){ echo $name,'在吃饭'; } }
欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入
this是指向当前对象的指针[php] view plaincopyprint?
class human{
public $name="李四";
public function eat(){
echo $this->name,'在吃饭';
}
public function test(){
echo $name,'在吃饭';
}
}
$li=new human();
echo $li->name;//李四
$li->eat();//李四在吃饭。
/*
和java,c++相比
方法体内想访问调用者的属性,必须用$this
如果不加,则理解为方法内部的一个局部变量.
*/
$li->test();//Notice: Undefined variable: name in C:\wamp\www\php\this.php on line 14
/******
从生活中的角度来理解$this
女娲造人时, 造了一个"悔恨"的方法
{
抓[自己]头发
抽 [自己] 脸
}
世界上的人那么多,
悔恨时,抓谁的头发?
抽谁的脸?
张三,李四? 王五? 都不能说明合理的情况
只能理解为"自己"
******/
?>
class human{
public $name="李四";
public function eat(){
echo $this->name,'在吃饭';
}
public function test(){
echo $name,'在吃饭';
}
}
$li=new human();
echo $li->name;//李四
$li->eat();//李四在吃饭。
/*
和java,c++相比
方法体内想访问调用者的属性,必须用$this
如果不加,则理解为方法内部的一个局部变量.
*/
$li->test();//Notice: Undefined variable: name in C:\wamp\www\php\this.php on line 14
/******
从生活中的角度来理解$this
女娲造人时, 造了一个"悔恨"的方法
{
抓[自己]头发
抽 [自己] 脸
}
世界上的人那么多,
悔恨时,抓谁的头发?
抽谁的脸?
张三,李四? 王五? 都不能说明合理的情况
只能理解为"自己"
******/
?>


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