- var_dump: documentation ( source)
- urldecode: documentation ( source)
<?php
// http://williamsoriscompetition.com/enter.php?id=c54eaaa334be71e3da26536ffb365337185985da&score=1%2E926627&code=960349492860
$id = 'c54eaaa334be71e3da26536ffb365337185985da';
$score = (float) urldecode('1%2E926627');
var_dump($score);