PHP 获取ip地址代码汇总

function getip() {
  static $ip = "";
  $ip = $_SERVER["REMOTE_ADDR"];
  if(isset($_SERVER["HTTP_CDN_SRC_IP"])) {
    $ip = $_SERVER["HTTP_CDN_SRC_IP"];
  } elseif (isset($_SERVER["HTTP_CLIENT_IP"]) && preg_match("/^([0-9]{1,3}\.){3}[0-9]{1,3}$/", $_SERVER["HTTP_CLIENT_IP"])) {
    $ip = $_SERVER["HTTP_CLIENT_IP"];
  } elseif(isset($_SERVER["HTTP_X_FORWARDED_FOR"]) AND preg_match_all("#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#s", $_SERVER["HTTP_X_FORWARDED_FOR"], $matches)) {
    foreach ($matches[0] AS $xip) {
      if (!preg_match("#^(10|172\.16|192\.168)\.#", $xip)) {
        $ip = $xip;
        break;
      }
    }
  }
  return $ip;
}


function getip() {