original_string: private function determineRemoteIpAddress(array $server): string
      {
          if (array_key_exists('HTTP_X_FORWARDED_FOR', $server) && filter_var($server['HTTP_X_FORWARDED_FOR'], FILTER_VALIDATE_IP)) {
              return $server['HTTP_X_FORWARDED_FOR'];
          } elseif (array_key_exists('HTTP_CLIENT_IP', $server) && filter_var($server['HTTP_CLIENT_IP'], FILTER_VALIDATE_IP)) {
              return $server['HTTP_CLIENT_IP'];
          } elseif (array_key_exists('HTTP_TRUE_CLIENT_IP', $server) && filter_var($server['HTTP_TRUE_CLIENT_IP'], FILTER_VALIDATE_IP)) {
              return $server['HTTP_TRUE_CLIENT_IP'];
          }
  
          return $server['REMOTE_ADDR'];
      }
code: private function determineRemoteIpAddress(array $server): string
      {
          if (array_key_exists('HTTP_X_FORWARDED_FOR', $server) && filter_var($server['HTTP_X_FORWARDED_FOR'], FILTER_VALIDATE_IP)) {
              return $server['HTTP_X_FORWARDED_FOR'];
          } elseif (array_key_exists('HTTP_CLIENT_IP', $server) && filter_var($server['HTTP_CLIENT_IP'], FILTER_VALIDATE_IP)) {
              return $server['HTTP_CLIENT_IP'];
          } elseif (array_key_exists('HTTP_TRUE_CLIENT_IP', $server) && filter_var($server['HTTP_TRUE_CLIENT_IP'], FILTER_VALIDATE_IP)) {
              return $server['HTTP_TRUE_CLIENT_IP'];
          }
  
          return $server['REMOTE_ADDR'];
      }
code_tokens: private function determineRemoteIpAddress ( array $ server ) : string { if ( array_key_exists ( 'HTTP_X_FORWARDED_FOR' , $ server ) && filter_var ( $ server [ 'HTTP_X_FORWARDED_FOR' ] , FILTER_VALIDATE_IP ) ) { return $ server [ 'HTTP_X_FORWARDED_FOR' ] ; } elseif ( array_key_exists ( 'HTTP_CLIENT_IP' , $ server ) && filter_var ( $ server [ 'HTTP_CLIENT_IP' ] , FILTER_VALIDATE_IP ) ) { return $ server [ 'HTTP_CLIENT_IP' ] ; } elseif ( array_key_exists ( 'HTTP_TRUE_CLIENT_IP' , $ server ) && filter_var ( $ server [ 'HTTP_TRUE_CLIENT_IP' ] , FILTER_VALIDATE_IP ) ) { return $ server [ 'HTTP_TRUE_CLIENT_IP' ] ; } return $ server [ 'REMOTE_ADDR' ] ; }
docstring: Determines the remote ip address by using passed server configuration.
  
  @param string[] $server
  The server configuration.
  @return string The determined remote ip address.
docstring_tokens: Determines the remote ip address by using passed server configuration .