NCprog01.php

<?php
//used Export Cookies extension to get NC cookie
$ch = curl_init ();
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
$timeout = 0;
$myHITurl = "https://www.newbiecontest.org/epreuves/prog/prog1.php";
curl_setopt ( $ch, CURLOPT_URL, $myHITurl );
curl_setopt ( $ch, CURLOPT_HEADER, 0 );
curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt ( $ch, CURLOPT_CONNECTTIMEOUT, $timeout );
curl_setopt($ch, CURLOPT_COOKIEFILE, 'C:/Temp/cookies.txt');
curl_setopt($ch, CURLOPT_VERBOSE, true);
$file_contents = curl_exec ( $ch );
if (curl_errno ( $ch )) {
    echo curl_error ( $ch );
    curl_close ( $ch );
    exit ();
}
curl_close ( $ch );

$int = (int) filter_var($file_contents, FILTER_SANITIZE_NUMBER_INT);
$subm = "https://www.newbiecontest.org/epreuves/prog/verifpr1.php?solution=" . $int;
echo $subm;
header("Location: $subm");
?>