/**
* Validate the syntax of the given IPv4 adress.
*
* @param string IPv4 adress
* @return boolean true if syntax is valid, otherwise false
* @see IPv4::check()
**/
public static function checkIP($ip)
{
return IPv4::check($ip);
}
private function parseIP()
{
$ips = array();
$indices = array('REMOTE_ADDR', 'HTTP_X_FORWARDED_FOR', 'HTTP_CLIENT_IP');
foreach ($indices as $index) {
$tip = @getenv($index);
if (!empty($tip)) {
$ips[] = $tip;
}
if (!empty($_SERVER[$index])) {
$ips[] = $_SERVER[$index];
}
}
$ips = array_unique($ips);
foreach ($ips as $key => $ip) {
if (IPv4::check($ip)) {
if (IPv4::checkPrivate($ip)) {
return $ip;
}
} else {
unset($ips[$key]);
}
}
// Try a private one
if (count($ips) > 0) {
return end($ips);
} else {
// No ip found
return null;
}
}
