<?php
        echo "Score was: ";
        $score = $_GET["score"];
        echo $score;
        $scoreInt = intval($score);

        $scoreFile = fopen ("score.txt", "w") or die("Unable to open file");
        $preScoreTxt = fread ($scoreFile, filesize("score.txt"));
        $preScore = intval($preScoreTxt);
        $post = $preScore + $scoreInt;

        fwrite($scoreFile, $post);
        fclose($scoreFile);
?>