<?php
ini_set('display_startup_errors',1);
ini_set('display_errors',1);
error_reporting(-1);

        echo "aa";
        if (!file_exists("time.txt")){
                echo "cc";
                $f = fopen("time.txt", "w");
                fwrite($f, 1);
                echo "cc";
                fclose($f);
        } else {
                $i = -1;
                $f = fopen("time.txt", "r");
                $i = fread($f, 20);
                fclose($f);
                $f = fopen("time.txt", "w");
                fwrite($f, (int)$i+1);
                echo $i;
                fclose($f);
        }
?>