get_called_class--后期静态绑定（"Late Static Binding"）类的名称

get_called_class--后期静态绑定（"Late Static Binding"）类的名称

string get_called_class ( void )

获取静态方法调用的类名。

返回类的名称，如果不是在类中调用则返回 FALSE。

<?php
class Person{
public $username;
public $age;
public $height;
public $weight;
static public $number = 0;

public function __construct($username,$age,$height,$weight){
$this->username = $username;
$this->age = $age;
$this->height = $height;
$this->weight = $weight;
self::$number++;
}
public function __set($name,$value){
$this->$name = $value;
}

public function __get($name){
return $this->$name;
}
/**
* 1）static方法中不能直接使用非静态成员，因为非静态成员与实例相关，通过实例化间接使用
* 2）static方法中不能用this（与实例相关）
* 3）非static方法中可以使用static成员
*/
static public function getUsernumber(){
var_dump(get_called_class());
return self::$number;
}

public function getUsername(){
var_dump(get_called_class());
return $this->username;
}

public function __toString(){
return '';
}
}
$p_person1 = new Person('zhaofei',23,185,62);
echo $p_person1->getUsername();
$p_person2 = new Person('zhaofei1',24,165,68);
$p_person3 = new Person('zhaofei2',23,180,82);
$p_person4 = new Person('zhaofei3',22,175,72);
echo Person::getUsernumber();?>