original_string: public function pad($num, $char = '0', $dir = STR_PAD_LEFT)
      {
          $this->value = str_pad($this->value(), $num, $char, $dir);
  
          return $this;
      }
code: public function pad($num, $char = '0', $dir = STR_PAD_LEFT)
      {
          $this->value = str_pad($this->value(), $num, $char, $dir);
  
          return $this;
      }
code_tokens: public function pad ( $ num , $ char = '0' , $ dir = STR_PAD_LEFT ) { $ this -> value = str_pad ( $ this -> value ( ) , $ num , $ char , $ dir ) ; return $ this ; }
docstring: Aplicar PAD.
  
  @param $num
  @param string $char
  @param int $dir
  @return $this
docstring_tokens: Aplicar PAD .