parse_url breaks if a username containing an '@' sign is used: 

<?php

$url=parse_url('http://me@abc.com:pass@xyz.org/page.php');
var_dump($url);

?>

Returns:

array(4) {
  ["scheme"]=>
  string(4) "http"
  ["host"]=>
  string(7) "abc.com"
  ["user"]=>
  string(2) "me"
  ["path"]=>
  string(9) "/page.php"
}

Should return:

array(5) {
  ["scheme"]=>
  string(4) "http"
  ["host"]=>
  string(7) "xyz.org"
  ["user"]=>
  string(10) "me@abc.com"
  ["pass"]=>
  string(4) "pass"
  ["path"]=>
  string(9) "/page.php"
}