Online PHP editor | refs for m2tbs

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