[img] BB converting problem.

[fook3d]

Hey guys and girls, as always, regex has me pulling out my hair.

 

Basically, its for a BB parsing engine to only allow URL's ending in image formats I choose, here are the details.

 

From BB to HTML

$text = preg_replace("\[img\](.+?)\.(png|gif|jpg)\[\/img\]", "<img src='$1.\\2' />", $text);

 

From HTML to BB

$text = preg_replace("\<img src\='(.+)\.(png|gif|jpg)\' \/\>", "[img=\\1.\\2]", $text);

 

Error:

Warning: preg_replace() [function.preg-replace]: Delimiter must not be alphanumeric or backslash in /path/and/filename.php on line xxx (Numbers are those lines above)

 

Any help on this will be greatly appreciated.

[effigy]

PREG requires delimiters. Also, use non-capturing parentheses instead: (?:png|gif|jpg)