PHP获取客户端ip

function get_client_ip() { if(getenv('HTTP_CLIENT_IP')) { $client_ip = getenv('HTTP_CLIENT_IP'); } elseif(getenv('HTTP_X_FORWARDED_FOR')) { $client_ip = getenv('HTTP_X_FORWARDED_FOR'); } elseif(getenv('REMOTE_ADDR')) { $client_ip = getenv('REMOTE_ADDR'); } else { $client_ip = $HTTP_SERVER_VAR['REMOTE_ADDR']; } return $client_ip; }