php[world] in Washington, D.C.


(PHP 4)

com_invoke 调用 COM 组件的方法。


mixed com_invoke ( resource $com_object , string $function_name [, mixed $ function parameters, ... ] )

com_invoke() 调用由 com_object 所引用的对象的方法。出错返回 FALSE,成功则返回 function_name 的返回值。

add a note add a note

User Contributed Notes 1 note

tomer at parity-bit dot com
9 years ago
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.
To Top