What are some best practices for creating an image management system using PHP?

When creating an image management system using PHP, it is important to properly handle image uploads, storage, and retrieval. Best practices include validating uploaded images, storing them securely, and optimizing them for efficient retrieval.

// Example code for handling image uploads in PHP
if(isset($_FILES['image'])){
    $file_name = $_FILES['image']['name'];
    $file_tmp = $_FILES['image']['tmp_name'];
    
    // Validate image file type
    $file_type = $_FILES['image']['type'];
    if($file_type != 'image/jpeg' && $file_type != 'image/png'){
        echo 'Invalid file type. Only JPEG and PNG files are allowed.';
    } else {
        move_uploaded_file($file_tmp, 'uploads/' . $file_name);
        echo 'Image uploaded successfully.';
    }
}