将函数存储为数组php的元素 [英] Store functions as elements of an array php

问题描述

是否可以通过引用或匿名函数将一些函数存储在数组中?

Is it possible store a few functions in an array by reference or by anonymous function?

例如:

 $array = [fun1, function(){ /*do something*/ }, fun3];

其中fun1和fun3定义为

where fun1 and fun3 are defined as

 function fun1(){/*do something*/}

推荐答案

只要您的PHP版本为 > = 5.3 ，您就可以利用匿名函数和数组中的常规函数​​:

As long as your PHP version is >= 5.3 you'll be able to harness anonymous functions and regular functions in your array:

function yourFunction($string){
    echo $string . " : by reference";
};

$array = array(
    'a' => function($string){
        echo $string;
    },
    'b' => 'yourFunction',
);

您可以使用 call_user_func 或

You can use the call_user_func or call_user_func_array functions.

call_user_func($array['a'], 'I love things');
call_user_func($array['b'], 'I love things');

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或者作为 @Andrew也曾在评论中指出 ，您可以将其称为:

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Or As @Andrew stated in the comments too, you could call it as the following:

$array['a']('I love things');
$array['b']('I love things');

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如果您想了解有关这些回调方法的更多信息，请参阅

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If you'd like to read more about these callback methods, it's filed under the callback pseudo-type documentation on PHP.net and it is well worth a read!

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