LF Help on XML : Parsing error on equal sign, obvious something wrong - SOLVED!

[Vaupell]

working on generating a xml file,

PHP Code:

$hentbrugere = ' select statement......';
$xmlfile = 'dir + filename......';
 
$file= fopen($xmlfile, "w");
 
$_xml ='<?xml version='."\"1.0\"".' encoding="ISO-8859-1"?>'."\r\n";
$_xml .="\r\n";
$_xml .="<users>\r\n";
 
while($row=$vbulletin->db->fetch_array($hentbrugere))
{
  $_xml .="<userid".'='."\"" . $row['userid'] . "\">\r\n";
  $_xml .="\t<username>" . $row['username'] . "</username>\r\n";
  $_xml .="\t<email>" . $row['email'] . "</email>\r\n";
  $_xml .="\t<usertitle>" . $row['usertitle'] . "</usertitle>\r\n";
  $_xml .="<".'/'."userid>\r\n";
}
 
$_xml .="</users>\r\n";
fwrite($file, $_xml);
fclose($file);

Creating file, filling file with content just fine..
And appears fine when looking in notepad or textreader..

But if i preview in a browser, or wysw...editor its bugged
browsers write

Parse error, and a pointer is pointing to the equal sign.
<userid="1">
-------^

so i thought maybe i needed to change equal sign to html with &amp;

PHP Code:

  $_xml .="<userid &amp; \"" . $row['userid'] . "\">\r\n"; 


But same error

Partial of the generated xml file

<?xml version="1.0" encoding="ISO-8859-1"?>
 
<users>
<userid="1">
    <username>Eqvaliser</username>
    <email>martin@localhost</email>
    <usertitle>Administrator</usertitle>
</userid>
</users>

it appears normal, but something is wrong.
And im thinking it might be i need to exscape the = sign in another way..

any advice . ?

--------------- Added [DATE]1272194760[/DATE] at [TIME]1272194760[/TIME] ---------------

Partial solved....

Adding a space to userid to user id works

$_xml .="<user id".'='."\"" . $row['userid'] . "\">\r\n";

Now the error is at the bottom instead..
</user id>
-------^

  $_xml .="<".'/'."user id>\r\n";

but the spacer is allready there.. hmmm...

--------------- Added [DATE]1272195046[/DATE] at [TIME]1272195046[/TIME] ---------------

SOLVED

Working loop is

PHP Code:

while($row=$vbulletin->db->fetch_array($hentbrugere))
{
  $_xml .="<user id".'='."\"" . $row['userid'] . "\">\r\n";
  $_xml .="\t<username>" . $row['username'] . "</username>\r\n";
  $_xml .="\t<email>" . $row['email'] . "</email>\r\n";
  $_xml .="\t<usertitle>" . $row['usertitle'] . "</usertitle>\r\n";
  $_xml .="<".'/'."user>\r\n";
}