What are the best practices for setting up and running PHP applications on mobile devices for testing and development purposes?

Setting up and running PHP applications on mobile devices for testing and development purposes can be challenging due to the differences in environments and screen sizes. One of the best practices is to use a responsive design approach to ensure that the application adapts to different screen sizes. Additionally, using tools like Chrome DevTools or remote debugging can help in testing and debugging the application on mobile devices.

<?php

// Example code snippet for responsive design using CSS media queries
echo '<style>
    @media only screen and (max-width: 600px) {
        body {
            background-color: lightblue;
        }
    }
    @media only screen and (min-width: 601px) {
        body {
            background-color: lightgreen;
        }
    }
</style>';

?>