REQUEST_URI在活动链接中设置样式

I have a menu that i'm including in my site pages, i want to set a style to the active document link in the menu, and this is the way i'm doing that:

<ul>
        <li><a href="slider.php" title="Slider" class="<?php 
 if ($_SERVER["REQUEST_URI"] == ("/cms/app/slider.php")){echo 'active' ;
 }else{ 'not-active';} ?>">Slider</a></li></ul>

So, this works as expected, when "slider.php" is an static document, but is not, it could be "slider.php?url=some-slide-in-db" also; or "store.php?id=4" (or any other id number in db), i just don't know how to implement this method in dynamic pages. ¿Can you give me a hand? thanks!

@Sam i used your clue and it works perfect! code:

<?php $urlsite=$_SERVER["QUERY_STRING"]; ?>

<li><a href="slider.php" title="Slider" class="<?php 
            if ($_SERVER["REQUEST_URI"] == ("/campanario/cms/app/slider.php") | $_SERVER["REQUEST_URI"] == ("/campanario/cms/app/slider_edit.php?$urlsite")){echo 'active' ;}

            else{ 'not-active';} ?>">Slider</a></li>

Thanks!

Try something like this for your if test.

if (substr($_SERVER["REQUEST_URI"],0,strpos("?", $_SERVER["REQUEST_URI"]) == ("/cms/app/slider.php"))

This basically will take the contents of $_SERVER["REQUEST_URI"] up to the first occurance of ? and use that for your if condition.