code: protected function isMatch($cookie, $host, $path, $name)
      {
          if ($cookie->getName() != $name) {
              return false;
          }
          if ($host && $cookie->getHost() && ! $cookie->isValidHost($host)) {
              return false;
          }
          if (! $cookie->isValidPath($path)) {
              return false;
          }
  
          return true;
      }
docs: Tests cookie for matching against search criteria.
  
  @param SimpleTest $cookie Cookie to test.
  @param string     $host   Host must match.
  @param string     $path   Cookie path must be shorter than this path.
  @param string     $name   Name must match.
  
  @return bool True if matched.