Логирование обращений

<?php
 
$dir = "logs"; // папка для хранения логов //
$ip = isset($_SERVER['HTTP_X_FORWARDED_FOR']) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : $_SERVER['REMOTE_ADDR'] ;
$us = $_SERVER['HTTP_USER_AGENT'];
$date = date("d-m-Y");
$time = date("H:i:s");
$path = $_SERVER['REQUEST_URI'];
$ref = $_SERVER['HTTP_REFERER'] ? $_SERVER['HTTP_REFERER'] : 'none';
 
if(!is_dir($dir))
{
mkdir($dir,0777,TRUE);
}
 
$fp = fopen ("$dir/$date.txt", 'a');
fputs ($fp, "Date: $date | time: $time | IP: $ip | in: $path | out: $ref | UA: $us.\n");
fclose ($fp);
 
?>