API MINECRAFT

Bonsoir :) j'aimerais crée une api minecraft sous cette forme www.example.com/checkuser.php?mcUser=PSEUDO
Qui montre si le compte minecraft est premium ou pas.
J'ai trouver le script si dessous sur google mais je n'arrive pas a la faire marcher :c aider moi svp !


Le script:

<?php
// Code written by DanielRHarris (DanielRH)
// Code written for VectronCraft (IP: MC.VectronCraft.com -- Website: www.VectronCraft.com)

// PHP Function to check whether the minecraft username ($mcUser) is a premium minecraft account holder
function check_user($mcUser)
{

// $check_mcUser gets the contents of the file from minecraft.net that does the checking for premium user
$check_mcUser = file_get_contents('http://www.minecraft.net/haspaid.jsp?user='.$mcUser.'');

// If $check_mcUser is true (premium user), it executes the code within
if ($check_mcUser == 'true') {
echo 'Username Is Premium!';
}

// If $check_mcUser is not true, it executes the code within the else statement
else {
echo 'Username Not Premium.';
}

}

// Please comment/uncomment a method you would like to use to recieve the username (leave only one activated at once and comment the others out with a // at the begginning of the line

// Gets the username from a form submit, or via url (eg. www.example.com/checkuser.php?mcUser=DanielRHarris):
$mcUser = $_GET["mcUser"];

// Declares the username right here within the quotes:
//$mcUser = 'DanielRHarris';

// Executes function that checks whether the user is a premium minecraft account holder
check_user($mcUser);
?>

EDIT: Ajout de la coloration syntaxique.