PHP静态函数在动态环境中调用

Question

从什么时候 PHP 允许像动态函数一样调用静态函数了？

我使用的是 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");

输出:

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

Answer 1

php5.0及以上版本总是可以的。

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

此外，文档中提到了它 ( 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).

这不是一个错误 ( static methods assigned to instances )