original_string: public function foldCase($key)
      {
          switch ($this->_caseFolding) {
              case Zend_Db::CASE_LOWER:
                  $value = strtolower((string) $key);
                  break;
              case Zend_Db::CASE_UPPER:
                  $value = strtoupper((string) $key);
                  break;
              case Zend_Db::CASE_NATURAL:
              default:
                  $value = (string) $key;
          }
          return $value;
      }
code: public function foldCase($key)
      {
          switch ($this->_caseFolding) {
              case Zend_Db::CASE_LOWER:
                  $value = strtolower((string) $key);
                  break;
              case Zend_Db::CASE_UPPER:
                  $value = strtoupper((string) $key);
                  break;
              case Zend_Db::CASE_NATURAL:
              default:
                  $value = (string) $key;
          }
          return $value;
      }
code_tokens: public function foldCase ( $ key ) { switch ( $ this -> _caseFolding ) { case Zend_Db :: CASE_LOWER : $ value = strtolower ( ( string ) $ key ) ; break ; case Zend_Db :: CASE_UPPER : $ value = strtoupper ( ( string ) $ key ) ; break ; case Zend_Db :: CASE_NATURAL : default : $ value = ( string ) $ key ; } return $ value ; }
docstring: Helper method to change the case of the strings used
  when returning result sets in FETCH_ASSOC and FETCH_BOTH
  modes.
  
  This is not intended to be used by application code,
  but the method must be public so the Statement class
  can invoke it.
  
  @param string $key
  @return string
docstring_tokens: Helper method to change the case of the strings used when returning result sets in FETCH_ASSOC and FETCH_BOTH modes .