original_string: public function getRow($index)
      {
          $keys = array_keys($this->rows);
  
          return isset($keys[$index]) ? $this->rows[$keys[$index]] : null;
      }
code: public function getRow($index)
      {
          $keys = array_keys($this->rows);
  
          return isset($keys[$index]) ? $this->rows[$keys[$index]] : null;
      }
code_tokens: public function getRow ( $ index ) { $ keys = array_keys ( $ this -> rows ) ; return isset ( $ keys [ $ index ] ) ? $ this -> rows [ $ keys [ $ index ] ] : null ; }
docstring: Retrieve the row with the given index.
  
  @param int $index The index.
  
  @return array
docstring_tokens: Retrieve the row with the given index .