What are the potential pitfalls of generating and delivering multiple images in PHP?

One potential pitfall of generating and delivering multiple images in PHP is the increased server load and potential performance issues. To mitigate this, you can utilize caching techniques to store generated images and deliver them efficiently without repeatedly generating them.

// Check if the image already exists in the cache
$cacheFile = 'path/to/cache/' . md5($imageSource) . '.jpg';

if (file_exists($cacheFile)) {
    // If the cached image exists, serve it directly
    header('Content-Type: image/jpeg');
    readfile($cacheFile);
} else {
    // Generate the image
    // Your image generation code here

    // Save the generated image to the cache
    imagejpeg($image, $cacheFile);

    // Output the generated image
    header('Content-Type: image/jpeg');
    imagejpeg($image);
}