strip_tags question

[Anon]

Hello, all! I use strip_tags() PHP function for my search engine to exclude all HTML and PHP tags from file text. But! It does not exclude PHP tags. Why? May be, I write them incorrectly? I always do like this:

<?PHP

//code here

?>

Or why then?
Appreciate your attention :-)

[znouza]

Why you don't use regexp? eg.
<?
$text="<p>paragraph</p> and <? phpinfo() ?>";
echo ereg_replace("<[^{<>]*>","",$text);}
?>

[Anon]

Thanks a lot. And more question. Could you please explain me, what is:
"<[^<>]>"
in
echo ereg_replace("<[^<>]>","",$text);
Sorry, may be, this question looks stupid for you, but I really don't know what this synthax means.

[znouza]

<[^<>]*> means:

match all the text beginning with <, ending with > and text inside must not contains < or > ...

eg:
<font face="">text</font>
- 1. match is <font..>
- 2. match is </font>

and text remains