original_string: public function retrieveDay($day, $month = null) {
  		$day = (int)$day;
  		if ($day < 1 || $day > 31) {
  			return 0;
  		}
  
  		// TODO check on month days!
  
  		return $day;
  	}
code: public function retrieveDay($day, $month = null) {
  		$day = (int)$day;
  		if ($day < 1 || $day > 31) {
  			return 0;
  		}
  
  		// TODO check on month days!
  
  		return $day;
  	}
code_tokens: public function retrieveDay ( $ day , $ month = null ) { $ day = ( int ) $ day ; if ( $ day < 1 || $ day > 31 ) { return 0 ; } // TODO check on month days! return $ day ; }
docstring: Day as integer value 1..31 or 0 on error
  february => 2
  
  @param string $day
  @param int|null $month
  @return int
docstring_tokens: Day as integer value 1 .. 31 or 0 on error february = > 2