PHP获取客户端IP地址，服务器IP地址

============================================获取客户端IP==============================================
public static function getClientIp() {
 ???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 = $_SERVER[‘REMOTE_ADDR‘];
 ???}
 ???return $client_ip;
}

============================================获取服务端IP==============================================

public static function getServerIp() {

 ???if (isset($_SERVER)) {
 ???????if ($_SERVER[‘SERVER_ADDR‘]) {
 ???????????$server_ip = $_SERVER[‘SERVER_ADDR‘];
 ???????} else {
 ???????????$server_ip = $_SERVER[‘LOCAL_ADDR‘];
 ???????}
 ???} else {
 ???????$server_ip = getenv(‘SERVER_ADDR‘);
 ???}
 ???return $server_ip;
}