PHP gets the client IP address example

UNSET ($ onlineIP);

if ($ _ SERVER [ 'HTTP_CLIENT_IP']) {$ onlineip = $ _ SERVER [ 'HTTP_CLIENT_IP'];} elseif ($ _ SERVER [ 'HTTP_X_FORWARDED_FOR']) {$ onlineip = $ _ SERVER [ 'HTTP_X_FORWARDED_FOR'];} else {$ onlineip = $ _ Server ['Remote_Addr'];

Echo $ onlineIP;

?>