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<?phpfunction get_client_ip(): string
 {
 $ipaddress = '';
 if (isset($_SERVER['HTTP_CLIENT_IP'])) {
 $ipaddress = $_SERVER['HTTP_CLIENT_IP'];
 } else if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
 $ipaddress = $_SERVER['HTTP_X_FORWARDED_FOR'];
 } else if (isset($_SERVER['HTTP_X_FORWARDED'])) {
 $ipaddress = $_SERVER['HTTP_X_FORWARDED'];
 } else if (isset($_SERVER['HTTP_FORWARDED_FOR'])) {
 $ipaddress = $_SERVER['HTTP_FORWARDED_FOR'];
 } else if (isset($_SERVER['HTTP_FORWARDED'])) {
 $ipaddress = $_SERVER['HTTP_FORWARDED'];
 } else if (isset($_SERVER['REMOTE_ADDR'])) {
 $ipaddress = $_SERVER['REMOTE_ADDR'];
 } else {
 $ipaddress = 'UNKNOWN';
 }
 
 return $ipaddress;
 }
 
 echo get_client_ip();
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