<?php
	switch($_GET["file"]) {
		case "DF001.zip":
		case "DF002.zip":
			$hitsfile = substr($_GET["file"], 0, -4) . '.txt';
			if($fp = @fopen($hitsfile, 'r+')) {
				flock($fp, LOCK_EX); // prevent two simultaneous downloads corrupting the file
				$hits = intval(fgets($fp)) +1;
				rewind($fp);
			} else {
				// file doesn't exist, create it
				$hits = 1;
				($fp = @fopen($hitsfile, 'w')) or die('Can\'t write file');
				flock($fp, LOCK_EX);
			}
			fputs($fp, strval($hits));
			flock($fp, LOCK_UN);
			fclose($fp);
			
			include 'get.php';
			
			break;
		default:
			header('HTTP/1.1 404 Not Found');
			
	}

?>