Function handling 函数
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forward_static_call

(PHP 5 >= 5.3.0)

forward_static_callCall a static method

说明

mixed forward_static_call ( callable $function [, mixed $parameter [, mixed $... ]] )

Calls a user defined function or method given by the function parameter, with the following arguments. This function must be called within a method context, it can't be used outside a class. It uses the late static binding.

参数

function

The function or method to be called. This parameter may be an array, with the name of the class, and the method, or a string, with a function name.

parameter

Zero or more parameters to be passed to the function.

返回值

Returns the function result, or FALSE on error.

范例

Example #1 forward_static_call() example

<?php

class A
{
    const 
NAME 'A';
    public static function 
test() {
        
$args func_get_args();
        echo static::
NAME" ".join(','$args)." \n";
    }
}

class 
extends A
{
    const 
NAME 'B';

    public static function 
test() {
        echo 
self::NAME"\n";
        
forward_static_call(array('A''test'), 'more''args');
        
forward_static_call'test''other''args');
    }
}

B::test('foo');

function 
test() {
        
$args func_get_args();
        echo 
"C ".join(','$args)." \n";
    }

?>

以上例程会输出:

B
B more,args 
C other,args

参见


Function handling 函数
在线手册:中文 英文
PHP手册
PHP手册 - N: Call a static method

用户评论:

arthur dot techarts at gmail dot com (12-Jul-2011 03:39)

Example to understand this function and difference with call_user_func:

<?php
class Beer {
    const
NAME = 'Beer!';
    public static function
printed(){
        echo
'static Beer:NAME = '. static::NAME . PHP_EOL;
    }
}

class
Ale extends Beer {
    const
NAME = 'Ale!';
    public static function
printed(){
       
forward_static_call(array('parent','printed'));
       
call_user_func(array('parent','printed'));

       
forward_static_call(array('Beer','printed'));
       
call_user_func(array('Beer','printed'));
    }
}

Ale::printed();
echo
'</pre>';
?>