protected function drawBars($im) {
        // Checksum
        $this->calculateChecksum();
        $temp_text = $this->text . $this->keys[$this->checksumValue];

        // Starting Code
        $this->drawChar($im, '000', true);

        // Draw Second Code
        $this->drawChar($im, $this->findCode($temp_text[1]), false);

        // Draw Manufacturer Code
        for ($i = 0; $i < 5; $i++) {
            $this->drawChar($im, self::inverse($this->findCode($temp_text[$i + 2]), $this->codeParity[(int)$temp_text[0]][$i]), false);
        }

        // Draw Center Guard Bar
        $this->drawChar($im, '00000', false);

        // Draw Product Code
        for ($i = 7; $i < 13; $i++) {
            $this->drawChar($im, $this->findCode($temp_text[$i]), true);
        }

        // Draw Right Guard Bar
        $this->drawChar($im, '000', true);
    }
protected function drawBars($im) {
        // Checksum
        $this->calculateChecksum();
        $temp_text = $this->text . $this->keys[$this->checksumValue];

        // Starting Code
        $this->drawChar($im, '000', true);

        // Draw Second Code
        $this->drawChar($im, $this->findCode($temp_text[1]), false);

        // Draw Manufacturer Code
        for ($i = 0; $i < 5; $i++) {
            $this->drawChar($im, self::inverse($this->findCode($temp_text[$i + 2]), $this->codeParity[(int)$temp_text[0]][$i]), false);
        }

        // Draw Center Guard Bar
        $this->drawChar($im, '00000', false);

        // Draw Product Code
        for ($i = 7; $i < 13; $i++) {
            $this->drawChar($im, $this->findCode($temp_text[$i]), true);
        }

        // Draw Right Guard Bar
        $this->drawChar($im, '000', true);
    }
protected function drawBars ( $ im ) { // Checksum
 $ this -> calculateChecksum ( ) ; $ temp_text = $ this -> text . $ this -> keys [ $ this -> checksumValue ] ; // Starting Code
 $ this -> drawChar ( $ im , '000' , true ) ; // Draw Second Code
 $ this -> drawChar ( $ im , $ this -> findCode ( $ temp_text [ 1 ] ) , false ) ; // Draw Manufacturer Code
 for ( $ i = 0 ; $ i < 5 ; $ i ++ ) { $ this -> drawChar ( $ im , self :: inverse ( $ this -> findCode ( $ temp_text [ $ i + 2 ] ) , $ this -> codeParity [ ( int ) $ temp_text [ 0 ] ] [ $ i ] ) , false ) ; } // Draw Center Guard Bar
 $ this -> drawChar ( $ im , '00000' , false ) ; // Draw Product Code
 for ( $ i = 7 ; $ i < 13 ; $ i ++ ) { $ this -> drawChar ( $ im , $ this -> findCode ( $ temp_text [ $ i ] ) , true ) ; } // Draw Right Guard Bar
 $ this -> drawChar ( $ im , '000' , true ) ; }
Draws the bars

@param resource $im
Draws the bars