how do i generate an xml file in php to be load in flash?

[Snake]

I'm frustrated, lol. I've tried everything and nothing seems to work. I want to create a php script to generate an xml file to be load in a flash movie. This is an example of my script:
<videos>
<?php
if ($handle = opendir('videos')) {

while (false !== ($file = readdir($handle))) {

if ($file != "." && $file != ".."){

echo "\t<video>$file</video>\n";
}

}

closedir($handle);
}
?>
</videos>

i then load the php file in flash using xmlFile.load(php script) but it just don't work. But if i try to write the file in plain xml works spectacular. SOMEBODY PLEASE HELP!!