com_invoke

(PHP 4)

com_invoke — Calls a COM component's method [deprecated]

Description

mixed com_invoke ( resource $com_object , string $function_name [, mixed $function_parameters ] )

com_invoke() invokes the method named function_name of the COM component referenced by com_object. com_invoke() returns FALSE on error, returns the function_name's return value on success. All the extra parameters function_parameters are passed to the method function_name.

Пример #1 Don't use com_invoke(), use OO syntax instead


<?php
// do this
$val = $obj->method($one, $two);
// instead of this:
$val = com_invoke($obj, 'method', $one, $two);
?>

Замечание: Эта функция не существует в PHP 5; вместо этого для доступа к свойствам и вызову методов используйте обычный и более привычный объектно-ориентированный синтаксис.

Коментарии

Feb 01

Автор: tomer at parity-bit dot com


Note that if you want to use a string to specify the method to call (e.g. a drop-down list to decide what to do to a server process) you can do this in three ways.



The first is to use this function, as in <?php com_invoke($obj, $_GET['func']); ?>

That's bad.



The second is to use eval(), as in <?php eval("\$obj->{$_GET['func']}();"); ?>

That's very very very *very* bad.



The third is to use call_user_func(), as in <?php call_user_func(array($obj, $_GET['func'])); ?>

That's very good.



Remember to validate the user input against a list of allowed methods if a non-admin is at the console.



function.call-user-func