Hi, PROBLEM: I am trying to add youtube embed on my site. The followings string recognizes the syntax: [youtube=height,widht,id_url]url_without_id_url[/youtube] AIM: I would like to change it so that the syntax changes to [youtube]url_with_id_url[/youtube]// [youtube] and [/youtube]$text = preg_replace("#\[youtube=([0-9]+)[,]([0-9]+)[,]([0-9a-z\-_]+):$uid\](.*?)\[/youtube:$uid\]#si", "<object width=\"\\1\" height=\"\\2\"><param name=\"movie\" value=\"http://www.youtube.com/v/\\3\"></param><embed src=\"http://www.youtube.com/v/\\3\" type=\"application/x-shockwave-flash\" width=\"\\1\" height=\"\\2\"></embed></object>"."[/youtube:$uid]", $text); $text = str_replace("[/youtube:$uid]", "", $text);