What are some best practices for generating and manipulating graphics using PHP?

Generating and manipulating graphics using PHP can be achieved using libraries such as GD or Imagick. It is important to follow best practices such as validating user input, optimizing image size, and caching images to improve performance. Additionally, using functions like imagecreatefromjpeg() and imagecopyresampled() can help in creating and manipulating graphics efficiently.

// Example code snippet using GD library to create a simple image
$width = 200;
$height = 200;

$image = imagecreatetruecolor($width, $height);

$bg_color = imagecolorallocate($image, 255, 255, 255);
$text_color = imagecolorallocate($image, 0, 0, 0);

imagefill($image, 0, 0, $bg_color);
imagestring($image, 5, 50, 50, 'Hello World!', $text_color);

header('Content-type: image/png');
imagepng($image);
imagedestroy($image);