<?
// Function to get the client IP address
function showRealIP() 
{
    $headers =  array (
        'HTTP_X_FORWARDED_FOR', 
        'HTTP_X_FORWARDED', 
        'HTTP_FORWARDED_FOR', 
        'HTTP_FORWARDED', 
        'HTTP_VIA',
        'HTTP_X_COMING_FROM', 
        'HTTP_COMING_FROM', 
        'HTTP_CLIENT_IP'
    );
  
    foreach ( $headers as $header ) {
        if (isset ( $_SERVER [$header]  )) {
        //Check server
            if (($pos = strpos ( $_SERVER [$header], ',' )) != false) {
                $ip = substr ( $_SERVER [$header], 0, $pos );//True
            } else {
                $ip = $_SERVER [$header]; //False
            }
            $ipnumber = ip2long($ip);
			
            if ($ipnumber !== -1 && $ipnumber !== false && (long2ip ( $ipnumber ) === $ip)) {
                if (($ipnumber - 184549375) && // Not in 10.0.0.0/8
                ($ipnumber  - 1407188993) && // Not in 172.16.0.0/12
                ($ipnumber  - 1062666241)) // Not in 192.168.0.0/16
                if (($pos = strpos ( $_SERVER [$header], ',' )) != false) {
                    $ip = substr ( $_SERVER [$header], 0, $pos );
                } else {
                    $ip = $_SERVER [$header];
                }
                return $ip;
            }
        }
         
    }
    return $_SERVER ['REMOTE_ADDR'];
}

function get_ip_address() {
    $ip_keys = array('HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR');
    foreach ($ip_keys as $key) {
        if (array_key_exists($key, $_SERVER) === true) {
            foreach (explode(',', $_SERVER[$key]) as $ip) {
                // trim for safety measures
                $ip = trim($ip);
                // attempt to validate IP
                if (validate_ip($ip)) {
                    return $ip;
                }
            }
        }
    }

    return isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : false;
}


/**
 * Ensures an ip address is both a valid IP and does not fall within
 * a private network range.
 */
function validate_ip($ip)
{
    if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) === false) {
        return false;
    }
    return true;
}

function getIP() {
    $ip = $_SERVER['SERVER_ADDR'];

    if (PHP_OS == 'WINNT'){
        $ip = getHostByName(getHostName());
    }

    if (PHP_OS == 'Linux'){
        $command="/sbin/ifconfig";
        exec($command, $output);
        // var_dump($output);
        $pattern = '/inet addr:?([^ ]+)/';

        $ip = array();
        foreach ($output as $key => $subject) {
            $result = preg_match_all($pattern, $subject, $subpattern);
            if ($result == 1) {
                if ($subpattern[1][0] != "127.0.0.1")
                $ip = $subpattern[1][0];
            }
        //var_dump($subpattern);
        }
    }
    return $ip;
}

function getUserIP()
{
    $client  = $_SERVER['HTTP_CLIENT_IP'];
    $forward = $_SERVER['HTTP_X_FORWARDED_FOR'];
    $remote  = $_SERVER['REMOTE_ADDR'];
	$ip = "";
	
	
    if(filter_var($client, FILTER_VALIDATE_IP))
    {
        $ip = $client." 1 ".$ip;
    }
    if(filter_var($forward, FILTER_VALIDATE_IP))
    {
        $ip = $forward." 2 ".$ip;
    }
    if(filter_var($remote, FILTER_VALIDATE_IP))
    {
        $ip = $remote." 3 ".$ip;
    }

    return $ip;
}

function get_client_ipPHP() {
    $ipaddress = '';
    if (getenv('HTTP_CLIENT_IP'))
        $ipaddress = $ipaddress." : ".getenv('HTTP_CLIENT_IP');
    if(getenv('HTTP_X_FORWARDED_FOR'))
        $ipaddress = $ipaddress." : ".getenv('HTTP_X_FORWARDED_FOR');
    if(getenv('HTTP_X_FORWARDED'))
        $ipaddress = $ipaddress." : ".getenv('HTTP_X_FORWARDED');
    if(getenv('HTTP_FORWARDED_FOR'))
        $ipaddress = $ipaddress." : ".getenv('HTTP_FORWARDED_FOR');
    if(getenv('HTTP_FORWARDED'))
       $ipaddress = $ipaddress." : ".getenv('HTTP_FORWARDED');
    if(getenv('REMOTE_ADDR'))
        $ipaddress = $ipaddress." : ".getenv('REMOTE_ADDR');
    
    return $ipaddress;
}

function get_client_ipWEB() {
    $ipaddress = '';
    if (isset($_SERVER['HTTP_CLIENT_IP']))
        $ipaddress = $ipaddress." : ".$_SERVER['HTTP_CLIENT_IP'];
    if(isset($_SERVER['HTTP_X_FORWARDED_FOR']))
        $ipaddress =  $ipaddress." : ".$_SERVER['HTTP_X_FORWARDED_FOR'];
    if(isset($_SERVER['HTTP_X_FORWARDED']))
        $ipaddress =  $ipaddress." : ".$_SERVER['HTTP_X_FORWARDED'];
    if(isset($_SERVER['HTTP_FORWARDED_FOR']))
        $ipaddress =  $ipaddress." : ".$_SERVER['HTTP_FORWARDED_FOR'];
    if(isset($_SERVER['HTTP_FORWARDED']))
        $ipaddress =  $ipaddress." : ".$_SERVER['HTTP_FORWARDED'];
    if(isset($_SERVER['REMOTE_ADDR']))
        $ipaddress =  $ipaddress." : ".$_SERVER['REMOTE_ADDR'];

    return $ipaddress;
}

?>