How can developers ensure cross-browser compatibility when using PHP for web development?

Developers can ensure cross-browser compatibility when using PHP for web development by using standardized HTML and CSS, testing their code on different browsers, and utilizing PHP frameworks that have built-in compatibility features. Additionally, they can use browser detection scripts to serve different code based on the user's browser. 

<?php
$browser = get_browser(null, true);
if($browser['browser'] == 'Chrome'){
    // Code specific for Chrome browser
} elseif($browser['browser'] == 'Firefox'){
    // Code specific for Firefox browser
} else {
    // Default code for other browsers
}
?>

Keywords

PHP cross-browser compatibility web development browser testing polyfills

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