implementing bbcode type of content filters...

[dbmasters]

I am trying to add bbcode type of markup to my forum...it's been pretty easy just piling preg_replace() statement one after another looking for , [ etc...but it seems that code would be slow and nasty...I want to make a single array of statements for this...would something like

$bbcode=array( 
      array('/\[quote\]/','/\[\/quote\]/')=>array('<b>Quote:<br /><i>','</i></b>'), 
      array('/\[sarcasm\]/','/\[\/sarcasm\]/')=>array('<b>Please Note Sarcasm:<br /><i>','</i></b>'), 
      array('/\[b\]/','/\[\/b\]/')=>array('<b>','</b>'), 
      array('/\[i\]/','/\[\/i\]/')=>array('<i>','</i>'), 
      "/\[(size=+[1-7]{1})\](.*[^\[]+)\[\/size\]/is"=>"<font \\1>\\2</font>" 
); 
$body=preg_replace(array_keys($bbcode),array_values($bbcode),$body); 
return $body;

be any lighter or quicker, or, does anyone have better suggestions to do this type of thing?

This specific code doesn't seem to work right, but I believe it gets the poitn across of what I am attempting to do...

[drawmack]

actually the best way to do this is with three stacks.

Stack 1 contains all of the opening bbcodes in the message.

Stack 2 contains all of the closing bbcodes in the message.

Stack 3 contains all of the text between the bbcodes.

The hard part of the implementation is actually building the stacks as you'll have to do some funky splitting of the input string.

Once you have the three stacks it is pretty simple so pop stuff off replace what should with html and then rebuild the message.