php-код счётчика

$COUNT_FILE = "counter.txt"; 
$message="";
$ip = getenv("REMOTE_ADDR")."::".getenv("HTTP_X_FORWARDED_FOR"); 
$datum=date("d.m.Y", time()-3*3600); 
$fp = fopen("$COUNT_FILE", "rb"); 
flock($fp,1); 
$contents=fread ($fp, filesize ($COUNT_FILE)); 
fclose ($fp); 
$content= explode("\n",$contents); 
$counts= explode("|",$content[0]); 
$counts[3]=chop($counts[3]); 
if ($counts[3]=="") {$counts[3]="1";} 
if (!in_array ($ip, $content)) { $content[] = $ip; $counts[1]++; } 
$counts[2]++; 
$counts[3]++;
if ($counts[0]!=$datum) { 
$message="total hits:    ".$counts[3]."\ntoday hits:    ".$counts[2]."\ntoday uniques: ".$counts[1];
$r11=$counts[1];
$r21=$counts[2];
$counts[0]=$datum; $counts[1]=1; $counts[2]=1; 
} 
echo ("посещения главной страницы: всего - ".$counts[3]." | хиты сегодня - ".$counts[2]." | хосты сегодня - ".$counts[1].""); 
$content[0]=$counts[0]."|".$counts[1]."|".$counts[2]."|".$counts[3]; 
$fd = fopen("$COUNT_FILE", "a"); 
$locked = flock($fd,2); 
if ($locked) { 
$fp = fopen("$COUNT_FILE", "wb"); 
if ($message=="") { fwrite($fp, implode("\n",$content)); }
else  { fwrite($fp,$content[0]);  }
fclose($fp); 
} 
fclose($fd);