Не волнуйтесь, все хорошо. Вы не в бане.

<?php

$db_host = "localhost";
$db_user = "usar_name";
$db_pass = "usar_pass";
$db_name = "datebase";
$db_name = "bans"; // БД банов

$db_connect = @mysql_connect($db_host, $db_user, $db_pass);
$db_site = @mysql_select_db($db_name, $db_connect);
if(mysql_error()) {die(mysql_error());}

function GetIP()
{
    $ip = $_SERVER["REMOTE_ADDR"];
    
    if(!empty($_SERVER["HTTP_CLIENT_IP"])) {$ip = $_SERVER["HTTP_CLIENT_IP"];}
    elseif(!empty($_SERVER["HTTP_X_FORWARDED_FOR"])) {$ip = $_SERVER["HTTP_X_FORWARDED_FOR"];}
    
    return $ip;
}

$user_ip =  GetIP();

$connect_mysql_ban = mysql_query("SELECT * FROM `$db_name` WHERE `player_ip` = '$user_ip' LIMIT 1");
$player = mysql_num_rows($connect_mysql_ban);

if($player)
{
    echo "Ваш IP адрес - $user_ip <font color='red'>(забанен)</font>";
}
else
{
    echo "Ваш IP адрес - $user_ip <font color='green'>(не забанен)</font>";
}

?>

function getXmlHttp() {
    var xmlhttp;
    
    try {
        xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
        try {
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        } catch (E) {
            xmlhttp = false;
        }
    }
    
    if(!xmlhttp && typeof XMLHttpRequest != 'undefined') {
        xmlhttp = new XMLHttpRequest();
    }
    
    return xmlhttp;
}

var http = getXmlHttp();

function Userbans(id) {
    if(http) {
        http.open("POST", "/ban_user.php");
        http.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        http.send("connect=true");
        http.onreadystatechange = function() {
            if(http.readyState == 4) {
                document.getElementById(id).innerHTML = http.responseText;
                return false;
            }
        }
    }
    
    return false;
}

<?php
header("Content-Type: text/javascript");

$db_host = "localhost";
$db_user = "usar_name";
$db_pass = "usar_pass";
$db_name = "datebase";
$db_name = "datebase"; // БД банов
$test_write = "";

$db_connect = @mysql_connect($db_host, $db_user, $db_pass);
$db_site = @mysql_select_db($db_name, $db_connect);
if(mysql_error()) {die(mysql_error());}

function GetIP()
{
    $ip = $_SERVER["REMOTE_ADDR"];
    
    if(!empty($_SERVER["HTTP_CLIENT_IP"])) {$ip = $_SERVER["HTTP_CLIENT_IP"];}
    elseif(!empty($_SERVER["HTTP_X_FORWARDED_FOR"])) {$ip = $_SERVER["HTTP_X_FORWARDED_FOR"];}
    
    return $ip;
}

$user_ip =  GetIP();


$connect_mysql_ban = mysql_query("SELECT * FROM `$db_name` WHERE `player_ip` = '$user_ip' LIMIT 1");
$player = mysql_num_rows($connect_mysql_ban);

if($player)
{
    $test_write = "Ваш IP адрес - $user_ip <font color='red'>(забанен)</font>";
}
else
{
    $test_write = "Ваш IP адрес - $user_ip <font color='green'>(не забанен)</font>";
}

echo "document.write('". $test_write ."')";
?>