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function test_IP()
{
    $IPs_arr = array
    (
        array('xxx.xxx.xxx.xxx', 'xxx.xxx.255.255')
    );
    $my_ip2long = @ip2long($_SERVER['REMOTE_ADDR']);
    foreach ($IPs_arr as $IPs) {
        if ($my_ip2long >= @ip2long($IPs[0]) && $my_ip2long <= @ip2long($IPs[1]))
            return "1";
    }
    return "2";
}
test_IP();