How can a PHP developer ensure that images sourced from a database are displayed correctly across different environments and servers?

When displaying images sourced from a database in PHP, it's important to ensure that the image paths are consistent across different environments and servers. One way to achieve this is by storing the base URL of the images in a configuration file and using this base URL to construct the complete image path dynamically. This approach allows the PHP developer to easily switch between environments without having to update hardcoded image paths.

// Configuration file
define('BASE_URL', 'http://example.com/images/');

// Retrieve image path from database
$imagePath = 'image.jpg';

// Construct complete image URL
$imageUrl = BASE_URL . $imagePath;

// Display image
echo '<img src="' . $imageUrl . '" alt="Image">';