call_user_func函数

傷城~ 2021-10-24 02:32 263阅读 0赞

![709364-20160618153540870-716344352.png][]

<?php
    function funa($b,$c)
    {
        echo $b;
        echo $c;
    }
    call_user_func('funa', "111","222");
    call_user_func('funa', "333","444");
    //显示 111 222 333 444
    //大家有没有发现，这个用法有点像javascript中的call方法，嘿嘿
    ?>
    // 第二种是调用类内部的函数：
    <?php
    class a {
        function b()
        {
            $args = func_get_args();
            $num = func_num_args();
            print_r($args);
            echo $num;
        }
    }
    call_user_func(array("a", "b"),"111","222");
    ?>

![709364-20160618153611682-369888312.png][]

<?php
    function a($b, $c)
    {
        echo $b;
        echo $c; 
    }
    call_user_func_array('a', array("111", "222"));
    //显示 111 222
    ?>
    
    //call_user_func_array函数也可以调用类内部的方法的:
    <?php
    Class ClassA
    {
        function bc($b, $c) {
            $bc = $b + $c;
            echo $bc;
        }
    }
    call_user_func_array(array(‘ClassA','bc'), array(“111″, “222″));
    //显示 333
    ?>

![709364-20160618153938463-615413241.png][]

<?php
    function otest1 ($a)
    {
         echo( '一个参数' );
    }
    
    function otest2 ( $a, $b)
    {
        echo( '二个参数' );
    }
    
    function otest3 ( $a ,$b,$c)
    {
        echo( '三个啦' );
    }
    
    function otest (){
        $args = func_get_args();
        $num = func_num_args();
        call_user_func_array( 'otest'.$num, $args  );
    }
    otest("11");
    otest("11","22");
    otest("11","22","33");
    ?>

转载于:https://www.cnblogs.com/luzai1989/p/5596284.html

[709364-20160618153540870-716344352.png]: /images/20211023/82bb9b7048a44a4bb5c4c3f1da6af827.png
[709364-20160618153611682-369888312.png]: /images/20211023/930c2df10bc14497a7c064de560a19ed.png
[709364-20160618153938463-615413241.png]: /images/20211023/7f42bde677b14b7abf964661149d0435.png