Regex Clickable URLs

[Webnet]

I'm not one of those few who know regex, so I googled this regex:

$html = preg_replace("`((?:https?|ftp)://\S+[[:alnum:]]/?)`si", "<a href=\"$1\" target=\"_blank\">$1</a>", $html); 

I need it so that it only parses urls where there is not a ] or = on the left side, and there is not a [ or ] on the right side of the url. My intention here is that it will not parse urls that are used within bbcode.

Help would be appreciated!

[Ernie1]

Try this:

$html = preg_replace("#(?<!\[|=)((?:https?|ftp)://\S+[[:alnum:]]/?)(?!\])#i", "<a href=\"$1\" target=\"_blank\">$1</a>", $html); 

[Webnet]

That didn't work, it's still parsing this as a link:

[img=http://pathtoimage]

It also needs to ignore < and > on the beginning/end rather than re-write that in the URL, because currently my link reads http://www.google.com<br/> because of the hard return at the end which was converted to BR

I really appreciate your help

[Ernie1]

Maybe this:

(?<!\[url=|\[img=|\[=)((?:https?|ftp)://\S+[[:alnum:]]/?)(?!\])