[Need simple Wiki Renderer tips]

Thanks! Exactly what I needed!

Im a Java and .Net developer and this is my first significant PHP application. Im not terribly familiar with the available packages :).

[simple mistakes]

Use eclipse with the php plugin. Really useful.

[simple mistakes]

CORRECTED:
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[code]
      if ($view == loginnews) {
print "<form method=post action=admin.php?view=loginnews&step=add>News: <input type=text name=message> <input type=submit value=Add></form>";
if ($step == Add) {
mysql_fetch_row(mysql_query("SELECT loginmsg FROM messages WHERE message='message';"));
mysql_query("INSERT INTO messages VALUES ('message','$message');");
}
else{ mysql_query("UPDATE messages SET loginmsg=$message WHERE message='message'");}
[/code]
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You missed a few semi colons and a close bracket

[Need simple Wiki Renderer tips]

I am developing a web application that requires some basic wiki functionality for part of the UI.
I am trying to find a simple wiki renderer or package that can facilitate the following:

Given some Wiki Markup, Wm.
Passing Wm into the Renderer returns valid HTML, free from script injections, unpermitted tags, etc...

I have been trying some open source wikis, but they are uneccessarily bloated and complex, and I am having trouble extracting such a simple renderer from their code bases.

Does anyone have any recommendations that could help me out?

Thanks in advance!