Hi, I'm trying to replace a domain in a text string, I'm using preg_replace but I can't find the right pattern I tried: $reg_xpr = "/(<a.* href=?)(.*?)(>?)(<\/a>?)/"; $repl = "$1www.newdomain.com$3$4$5"; $body = preg_replace($reg_xpr, $repl, $body); and it will work for links like this: $body = '<a href="http://www.domain.com">Link</a>'; and this: $body = '<a href='http://www.domain.com'>Link</a>'; but I don't know how to make it work for this $body = '<a href=http://www.domain.com>Link</a>'; I'm new working with regular expression, so I hope you don't blame me Thanks!