PHP静态函数在动态环境中被调用 [英] PHP static function being called in dynamic environment

问题描述

因为PHP允许调用静态函数像一个动态函数？

我正在使用php 5.3.2

  class weird {
 
 public static function iamstatic（$ calledFrom）{
 echoI一个静态函数调用一个$ calledFrom operator\\\
; 
} 
 
 public function test（）{
 self :: iamstatic（static）; 
 $ this-> iamstatic（dynamic）; 
} 
 
} 
 
 $ c = new weird（）; 
 $ c-> test（）; 
 
 weird :: iamstatic（Static outside class）; 
 $ c-> iamstatic（Dynamic outside class）; 
  

输出：

我是一个使用静态运算符调用的静态函数
我是一个使用动态运算符调用的静态函数
我是一个使用静态外部类运算符调用的静态函数
我是一个使用动态外部类运算符调用的静态函数
  

解决方案

php5.0及以上版本总是可能的。

http://3v4l.org/14PYp#v500

另外，它在文档中提到（ static ）

声明类属性或方法作为静态使得它们可以访问
，而不需要实例化该类。声明为
static的属性无法使用实例化的类对象（尽管
静态方法可以）访问。

而不是错误（分配给实例的静态方法）

Since when PHP allows to call static function like a dynamic function?

I am using php 5.3.2

class weird{

    public static function iamstatic($calledFrom){
            echo "I am  a static function called with  a $calledFrom operator\n";
    }

    public function test(){
            self::iamstatic("static");
            $this->iamstatic("dynamic");
    }

 }

$c = new weird();
$c->test();

weird::iamstatic("Static outside class");
$c->iamstatic("Dynamic outside class");

This outputs :

I am  a static function called with  a static operator
I am  a static function called with  a dynamic operator
I am  a static function called with  a Static outside class operator
I am  a static function called with  a Dynamic outside class operator

解决方案

It was always possible for php5.0 and above.

http://3v4l.org/14PYp#v500

Also, it's mentioned in documentation (static)

Declaring class properties or methods as static makes them accessible without needing an instantiation of the class. A property declared as static cannot be accessed with an instantiated class object (though a static method can).

And this not a bug (static methods assigned to instances)

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