php call_user_func, call_user_func_array 函数用法

mixed call_user_func ( callable $callback [, mixed $parameter [, mixed $... ]] )

mixed call_user_func_array ( callable $callback , array $param_arr )

http://php.net/manual/en/function.call-user-func.php

http://php.net/manual/en/function.call-user-func-array.php

Foo.php

<?php
namespace Foobar;

class Foo {
    public function bar($arg, $arg2) {
        echo __METHOD__," got $arg and $arg2\n";
    }
    public static function test($name) {
        printf("Hello, %s!\n", $name);
    }
}

$foo = new Foo();
call_user_func_array([$foo, "bar"], ["three", "four"]);
call_user_func([$foo, "bar"], "three", "four");

call_user_func_array(function($arg1, $arg2) {
    echo __FUNCTION__," got $arg1 and $arg2\n";
}, ["one", "two"]);

call_user_func_array(__NAMESPACE__.'\Foo::test', ['Hannes']);
call_user_func_array([__NAMESPACE__.'\Foo', 'test'], ['Philips']);

 

$ php Foo.php
Foobar\Foo::bar got three and four
Foobar\Foo::bar got three and four
Foobar\{closure} got one and two
Hello, Hannes!
Hello, Philips!