multiline preg_match

[bubblenut]

How can I do a multiline preg_match?
I have an xml file like this

<?xml version="1.0" encoding="ISO-8859-1"?>
<server_list>
  <server>
    <name>server.host.com</name>
    <ip>127.0.0.1</ip>
    <username>username</username>
    <password>password</password>
  </server>
  <server>
    <name>server2.hos.com</name>
    <ip>255.255.255.255</ip>
    <username>username</useranme>
    <password>password</password>
  </server>
</server_list>

Now, I want to match everything between the <server_list> and the </server_list> using preg_match, however this returns nothing '/<server_list>(.)<\/server_list>/' I am guessing that . does not include new lines I have also tried [.\n] but to no avail.
I know I can use explode far more easily for this simple case, but that would not be so good for handling more complex situations ie <server name="server.host.com" ip="127.0.0.1">)
I do not have the XML parser functions and cannot add these to the system.
Any help would be appreciated
Thanks

[Shrike]

s is the multiline modifier in PCRE - preg_match("/matchtext/s", "replacetext");