Game programming writing XML with php

[Genero]

Hello.

I am programming a game. When game is over the user enters his first and last name. But i have no clue how to do this. It must be done like this : user enters his first and last name and score is automatical. Im not strong in php. Php should write node with information just given and only with the score that is higher than the lowest score.

I have script that shows usernames and score points. But the main problem is that i want to write 10 top scores in xml file. The ordering is not important. Can anyone help me please?

<?xml version="1.0" ?>
<list>
	<name first="James" last="Johnson" gpa="1222" />
	<name first="John" last="Smith" gpa="1111" />
	<name first="Serena" last="Williams" gpa="1000" />
	<name first="Indiana" last="Jones" gpa="999" />
	<name first="Linda" last="Brown" gpa="888" />
	<name first="Robert" last="Davis" gpa="777" />
	<name first="Seno" last="Cular" gpa="666" />
	<name first="Mike" last="Wilson" gpa="555" />
	<name first="Mary" last="Moore" gpa="444" />
	<name first="Will" last="Taylor" gpa="333" />
</list>

[Genero]

<?php
$file_handle = fopen('toplist.xml','a');
$content = '<?xml version="1.0"?>
<name>';
foreach ($result as $row)
{
$content.="\n<name first='".$row->mark."' last='".$row->mark."' gpa='".$row->mark."' />\n";
}
fwrite($file_handle,$content);
fclose($file_handle);
?>

How do i send information to php file? and how do i calculate witch is the lowest score? I have to do it fast. I have no time to learn. Maybe someone or you can help me with the code?

The flash variables are firstname lastname and score

[Nile]

Instead of that, I would suggest SimpleXML, google it.