<?php
// http://williamsoriscompetition.com/enter.php?id=c54eaaa334be71e3da26536ffb365337185985da&score=1%2E926627&code=960349492860
$id = 'c54eaaa334be71e3da26536ffb365337185985da';
$score = urldecode('1%2E926627');
var_dump($score);
$num1 = toInt32(substr($id, 0, 1)) * toInt32(substr($id, -1, 1));
$num2 = toInt32(substr($score, 0, 1)) * toInt32(substr($id, 3, 1));
$num3 = toInt32(substr($id, 2, 1)) * toInt32(substr($id, -1, 1));
$code = $num1 . $num2 . $num3;
var_dump($code);
function toInt32($value)
{
$intval = hexdec($value);
var_dump($value, $intval);
return (PHP_INT_SIZE === 8) ? ($intval - 0x100000000) : $intval;
}
preferences:
53.5 ms | 402 KiB | 5 Q