regex

i was never good with regex... could you please help me?

Want to remove [stream ...] tags:
$content = "blah blah blah [stream provider=video flv=x:video.flv embed=false share=false width=450 height=253 dock=true controlbar=over bandwidth=high autostart=false /]";

$content = preg_replace( '/[(stream provider)(.*)\/]', '', $content);
I know the regex is wrong...

content= '[video title="vtitle" size=10 width=400 height=300]http://www.youtube.com/?v=xxx[/video]'

how can i get this?
$title=vtitle; size=10; width=400; height=300;
$url=http://www.youtube.com/?v=xxx
preg_match?

note, tag may be only
[video]http://www.youtube.com/?v=xxx[/video] or
[video title="vtitle" size=10]http://www.youtube.com/?v=xxx[/video]
(users do not use always full options)

Many, many... Thanks

You may find this pattern useful for the stream ones:

$pattern = '/\[stream[^\]]+\/\]/';
$string_without = preg_replace($pattern, '', $string);

For the video matches, this might be helpful:

$pattern =- '/\[video([^\]]*)\]([^\[]+)\[\/video\]/';
$num = preg_match_all($pattern, $string, $matches);

print_r($matches);