how do I make a bbcode to parse url tags into links?

Question

How should I go about parsing a url in php? I wanna make it so it goes

[url=http://www.google.com]Google[/url]

Turns into:

<         


        

Answer 1

$post = preg_replace('/\[url=(.+?)\](.+?)\[\/url\]/', '<a href="\1">\2</a>', $post);

That will turn: [url=http://google.com]Google[/url]

Into parsed bbcode text: Google

You'll probably want to use more specific regex than just .+ to filter out potentially bad/dangerous input.