original_string: public function binary(): string
      {
          $hex = str_pad($this->numeric(16), static::NB_BITS / 4, '0', STR_PAD_LEFT);
  
          return pack('H*', $hex);
      }
code: public function binary(): string
      {
          $hex = str_pad($this->numeric(16), static::NB_BITS / 4, '0', STR_PAD_LEFT);
  
          return pack('H*', $hex);
      }
code_tokens: public function binary ( ) : string { $ hex = str_pad ( $ this -> numeric ( 16 ) , static :: NB_BITS / 4 , '0' , STR_PAD_LEFT ) ; return pack ( 'H*' , $ hex ) ; }
docstring: Return binary string representation.
  
  @return string Binary string
docstring_tokens: Return binary string representation .