略微加速

PHP官方手册 - 互联网笔记

PHP - Manual: ReflectionFunction::invoke

2024-12-23

ReflectionFunction::invoke

(PHP 5, PHP 7, PHP 8)

ReflectionFunction::invokeInvokes function

说明

public ReflectionFunction::invoke(mixed ...$args): mixed

Invokes a reflected function.

参数

args

The passed in argument list. It accepts a variable number of arguments which are passed to the function much like call_user_func() is.

返回值

Returns the result of the invoked function call.

范例

示例 #1 ReflectionFunction::invoke() example

<?php
function title($title$name)
{
    return 
sprintf("%s. %s\r\n"$title$name);
}

$function = new ReflectionFunction('title');

echo 
$function->invoke('Dr''Phil');
?>

以上例程会输出:

Dr. Phil

注释

注意:

ReflectionFunction::invoke() cannot be used when reference parameters are expected. ReflectionFunction::invokeArgs() has to be used instead (passing references in the argument list).

参见

add a noteadd a note

User Contributed Notes 1 note

up
0
spark at limao dot com dot br
11 years ago
I know Reflections classes have a lot of power, but sometimes all we need is to store a annonymus function or even create a simple callback somewhere.

so here it is, the Callback class:
<?php
   
class Callback{
        private
$name = false;
       
        public function
Callback($obj,$call=false){
           
$name = array($obj);
            if(
$call) $name[] = $call;
           
           
$this->name = $name;
        }
        public function
invoke($params=array()){
            return
call_user_func_array($this->name,$params);
        }
    }
?>

Usage:
<?php
   
function sayName(){
        return
"goku";
    }
   
   
$myVar = new Callback("sayName");
   
    echo
"Hi, I am ".$myVar->invoke()."!";
   
   
//also works with methods: new Callback($obj,"method");
?>

官方地址:https://www.php.net/manual/en/reflectionfunction.invoke.php

北京半月雨文化科技有限公司.版权所有 京ICP备12026184号-3