What steps should be taken to properly integrate the GD module in PHP?

To properly integrate the GD module in PHP, you need to ensure that the GD library is installed on your server and enabled in your PHP configuration. You can check if GD is installed by running `phpinfo()` and looking for the GD section. If GD is not installed, you can install it using a package manager like apt-get or yum. Once GD is installed, you can start using its functions to manipulate images in your PHP code.

// Check if GD is installed
if (!function_exists('gd_info')) {
    die('GD library is not installed on this server.');
}

// Your PHP code using GD functions goes here
// For example:
$im = imagecreatetruecolor(100, 100);
$white = imagecolorallocate($im, 255, 255, 255);
imagefill($im, 0, 0, $white);
header('Content-Type: image/png');
imagepng($im);
imagedestroy($im);