Possible to add background color to transparent image using GD and PHP

Question

I have the thumbnail creation class written with php language using GD. I want to know is when i upload the transparent image which is png or gif, can i be able to put backg

Answer 1

Very simple code with dynamic background color.

> 0x10);
            $rgbArray['green'] = 0xFF & ($colorVal >> 0x8);
            $rgbArray['blue'] = 0xFF & $colorVal;
        } elseif (strlen($hexStr) == 3) { //if shorthand notation, need some string manipulations
            $rgbArray['red'] = hexdec(str_repeat(substr($hexStr, 0, 1), 2));
            $rgbArray['green'] = hexdec(str_repeat(substr($hexStr, 1, 1), 2));
            $rgbArray['blue'] = hexdec(str_repeat(substr($hexStr, 2, 1), 2));
        } else {
            return false; //Invalid hex color code
        }
        return $returnAsString ? implode($seperator, $rgbArray) : $rgbArray;die;
    }
    $color_code = hex2RGB('#fff000');

    $imgName = uniqid();
    $filePath = 'old-img/clothing_type_test.png';  //full path to your png, including filename and extension
    $savePath = 'new-img/'.$imgName.'.png';  //full path to saved png, including filename and extension
    $colorRgb = array('red' => $color_code['red'], 'green' => $color_code['green'], 'blue' => $color_code['blue']);  //background color

    $img = @imagecreatefrompng($filePath);
    $width  = imagesx($img);
    $height = imagesy($img);

    $backgroundImg = @imagecreatetruecolor($width, $height);
    $color = imagecolorallocate($backgroundImg, $colorRgb['red'], $colorRgb['green'], $colorRgb['blue']);
    imagefill($backgroundImg, 0, 0, $color);
    imagecopy($backgroundImg, $img, 0, 0, 0, 0, $width, $height);
    imagepng($backgroundImg, $savePath, 0);
?>