What are some best practices for organizing and categorizing images in PHP for a postcard system?

When organizing and categorizing images for a postcard system in PHP, it is best to create a folder structure that groups images by category or theme. This makes it easier to retrieve and display the appropriate images when creating postcards. Using a consistent naming convention for image files can also help in organizing and identifying them quickly.

// Example folder structure:
// images/
//   - birthday/
//     - birthday1.jpg
//     - birthday2.jpg
//   - thank_you/
//     - thank_you1.jpg
//     - thank_you2.jpg

// Example code to retrieve and display images for a specific category:
$category = 'birthday';
$imageFiles = glob("images/{$category}/*.jpg");

foreach ($imageFiles as $imageFile) {
    echo "<img src='{$imageFile}' alt=''>";
}