--- /dev/null
+--TEST--
+http_build_url flags
+--SKPIF--
+<?php
+include 'skip.inc';
+?>
+--FILE--
+<?php
+echo "-TEST\n";
+echo http_build_url("http://mike@www.example.com/foo/bar", "./baz", HTTP_URL_STRIP_AUTH|HTTP_URL_JOIN_PATH), "\n";
+echo http_build_url("http://mike@www.example.com/foo/bar/", "../baz", HTTP_URL_STRIP_USER|HTTP_URL_JOIN_PATH), "\n";
+echo http_build_url("http://mike:1234@www.example.com/foo/bar/", "./../baz", HTTP_URL_STRIP_PASS|HTTP_URL_JOIN_PATH), "\n";
+echo http_build_url("http://www.example.com:8080/foo?a=b#frag", "?b=c", HTTP_URL_JOIN_QUERY|HTTP_URL_STRIP_PORT|HTTP_URL_STRIP_FRAGMENT|HTTP_URL_STRIP_PATH), "\n";
+echo "Done\n";
+?>
+--EXPECTF--
+%sTEST
+http://www.example.com/foo/baz
+http://www.example.com/foo/baz
+http://mike@www.example.com/foo/baz
+http://www.example.com/?a=b&b=c
+Done
\ No newline at end of file