CREATE TABLE IF NOT EXISTS `counter` (
  `count` int(11) NOT NULL,
  PRIMARY KEY (`count`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;


INSERT INTO `counter` (`count`) VALUES
(0);

CREATE TABLE IF NOT EXISTS `count_ip` (
  `ip` varchar(15) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

<?php
$host = "localhost";
$mysql_user = "user_adi";
$mysql_pass = "password";
$db="database adi";

if(!@mysql_connect($host,$mysql_user,$mysql_pass) || !@mysql_select_db($db)){
echo "Bazaya qoşulmadı.Hər şeyin düzgün olduğuna yenidən baxın. ";
die();
}

$user_ip = $_SERVER['REMOTE_ADDR'];
function ip_exist($ip){
global $user_ip;
$query = "SELECT `ip` FROM `count_ip` WHERE `ip`='".$user_ip."'";
$query_run=mysql_query($query);
$num =mysql_num_rows($query_run);
if($num==0){

return false;
}elseif($num >=1){
return true;
}
}
function ip_add($ip){
$query = "INSERT INTO `count_ip` VALUES('".$ip."') ";
mysql_query($query);
}

function update_count(){
$query = "SELECT `count` FROM `counter`";
if($query_run = mysql_query($query)){
$count = mysql_result($query_run,0,'count');
$count_inc = $count +1;
$query_update = "UPDATE `counter` SET `count`='".$count_inc."'";
mysql_query($query_update);
}else{
die("Problem var ");
}
}

if(!ip_exist($user_ip)){
update_count();
ip_add($user_ip);
}
?>