todisable markup and PHP scripting in text inputs...?????

[prasadc]

hi all..

i am developing a forum, while posting a topic or reply...how can i disable the HTML tags and PHP scripting in those fields..??

and anyone pls tell me how can i manage smilies also..

iam screwd up for smtimes and any help is appreciated..

TIA 

[joquius]

$text = htmlspecialchars ($text);

or

$text = str_replace (">", ">", $text);

$text = str_replace ("<", "<", $text);

 

and smilies, stuff like:

$array = array ("/\: )/", "/\: P/");

$array2 = array ("<img src='smile.jpg' alt='' />", "<img src='blah.jpg' alt='' />");

$text = preg_replace ($array, $array2, $text);