preg_replace() issue

1) function filter() { if($this->post['a'] == "savenews") { $this->post['summary'] = preg_replace("!\[url\](.*)\[/url\]!","<a href=\"\\1\">\\1</a>", $this->post['summary']); } ----------------------- 2) global $nwedst; $nwedst = str_replace("<br>\n", '', $dat->summary); nwedst = preg_replace("!\<a href=\"http://(.*)\">(.*)\</a>!","[url]http://\\1[/url]", $nwedst); 1 takes a full news post and changes [url]...[/url] into <a href="...">...</a> and saves the news post 2 takes the full news post and recalls it, changes <a href="...">...</a>... into [url]...[/url] 1 is used when making a new news post, 2 is used when editing a news post (making the post user friendly and easy to edit) 2 seems to only replace the first <a href="..."> and the last </a> when there are multiple links. That's the first of my problems. The second is that I would like to change my code so that it changes [url="$1]$2[/url] into <a href="$1">$2</a> and back again but i don't know how to change multiple things with preg_replace(). plz help, Darkstar