What strategies can be employed to maintain responsive design when using PHP to output image galleries with specific layouts?

When outputting image galleries with specific layouts using PHP, it's important to ensure that the design remains responsive across different devices. One strategy to achieve this is by utilizing CSS frameworks like Bootstrap to create a grid system that automatically adjusts the layout based on screen size. By incorporating media queries in the CSS, you can define specific styles for different screen sizes, ensuring that the image gallery displays properly on all devices.

<div class="row">
    <?php
    $images = ['image1.jpg', 'image2.jpg', 'image3.jpg']; // Array of image filenames

    foreach ($images as $image) {
        echo '<div class="col-md-4 col-sm-6">';
        echo '<img src="images/' . $image . '" class="img-fluid">';
        echo '</div>';
    }
    ?>
</div>