update : 2015.11.03
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Call a callback with an array of parameters
Function handling 함수 목록
PHP Manual

call_user_func_array

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

call_user_func_array — Call a callback with an array of parameters

설명

mixed call_user_func_array ( callable $callback , array $param_arr )

Calls the callback given by the first parameter with the parameters in param_arr.

인수

callback

The callable to be called.

param_arr

The parameters to be passed to the callback, as an indexed array.

반환값

Returns the return value of the callback, or FALSE on error.

변경점

버전 설명
5.3.0 The interpretation of object oriented keywords like parent and self has changed. Previously, calling them using the double colon syntax would emit an E_STRICT warning because they were interpreted as static.

예제

Example #1 call_user_func_array() example

<?php
function foobar($arg, $arg2) {
    echo __FUNCTION__, " got $arg and $arg2\n";
}
class foo {
    function bar($arg, $arg2) {
        echo __METHOD__, " got $arg and $arg2\n";
    }
}


// Call the foobar() function with 2 arguments
call_user_func_array("foobar", array("one", "two"));

// Call the $foo->bar() method with 2 arguments
$foo = new foo;
call_user_func_array(array($foo, "bar"), array("three", "four"));
?>

위 예제의 출력 예시:

foobar got one and two
foo::bar got three and four

Example #2 call_user_func_array() using namespace name

<?php

namespace Foobar;

class Foo {
    static public function test($name) {
        print "Hello {$name}!\n";
    }
}

// As of PHP 5.3.0
call_user_func_array(__NAMESPACE__ .'\Foo::test', array('Hannes'));

// As of PHP 5.3.0
call_user_func_array(array(__NAMESPACE__ .'\Foo', 'test'), array('Philip'));

?>

위 예제의 출력 예시:

Hello Hannes!
Hello Philip!

Example #3 Using lambda function

<?php

$func = function($arg1, $arg2) {
    return $arg1 * $arg2;
};

var_dump(call_user_func_array($func, array(2, 4))); /* As of PHP 5.3.0 */

?>

위 예제의 출력:

int(8)

주의

Note:

Before PHP 5.4, referenced variables in param_arr are passed to the function by reference, regardless of whether the function expects the respective parameter to be passed by reference. This form of call-time pass by reference does not emit a deprecation notice, but it is nonetheless deprecated, and has been removed in PHP 5.4. Furthermore, this does not apply to internal functions, for which the function signature is honored. Passing by value when the function expects a parameter by reference results in a warning and having call_user_func() return FALSE (there is, however, an exception for passed values with reference count = 1, such as in literals, as these can be turned into references without ill effects — but also without writes to that value having any effect —; do not rely in this behavior, though, as the reference count is an implementation detail and the soundness of this behavior is questionable).

Note:

call_user_func()와 call_user_func_array() 등으로 등록한 콜백은 이전 콜백 실행시에 처리하지 않은 예외(uncaught exception)가 존재할 경우 호출되지 않습니다.

참고

Function handling 함수 목록
PHP Manual