getHostname() public static method

Returns the hostname of the current request (without port number)
public static getHostname ( ) : string
return string
 /**
  * @throws \Exception
  * @return string or False if not set
  */
 protected static function getPiwikInstanceId()
 {
     // until Piwik is installed, we use hostname as instance_id
     if (!self::isPiwikInstalled() && Common::isPhpCliMode()) {
         // enterprise:install use case
         return Config::getHostname();
     }
     // config.ini.php not ready yet, instance_id will not be set
     if (!Config::getInstance()->existsLocalConfig()) {
         return false;
     }
     $instanceId = @Config::getInstance()->General['instance_id'];
     if (!empty($instanceId)) {
         return $instanceId;
     }
     // do not rewrite the path as Piwik uses the standard config.ini.php file
     return false;
 }