code: private static function parseIniSize($size)
      {
          $iSize = intval($size);
          if ($iSize == 0) {
              return 0;
          }
          $size = trim($size);
  
          return $iSize * self::getSuffixMultiplier($size[strlen($size) - 1]);
      }
docs: @param string $size
  
  @return int