What are some best practices for adapting a website for smartphones using PHP?

When adapting a website for smartphones using PHP, it is important to ensure that the website is responsive and optimized for mobile devices. This can be achieved by using media queries in CSS to adjust the layout and styling based on the screen size. Additionally, PHP can be used to detect the user agent of the device accessing the website and serve different content or stylesheets accordingly. 

<?php
// Check if the user agent is a mobile device
function isMobile() {
    return preg_match("/(android|avantgo|blackberry|bolt|boost|cricket|docomo|fone|hiptop|mini|mobi|palm|phone|pie|tablet|up\.browser|up\.link|webos|wos)/i", $_SERVER["HTTP_USER_AGENT"]);
}

// Redirect to a mobile version of the website
if(isMobile()) {
    header("Location: mobile.php");
    exit();
}
?>

Keywords

responsive design mobile optimization PHP frameworks media queries viewport meta tag

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