How can the PHP code be optimized to improve the functionality and user experience of the popups with iframes?

The PHP code for the popups with iframes can be optimized by using AJAX to load the iframe content dynamically instead of loading it all at once. This will improve the loading speed and user experience by only fetching the iframe content when the popup is opened. 

// PHP code snippet using AJAX to load iframe content dynamically
<?php
if(isset($_GET['popup_id'])) {
    $popup_id = $_GET['popup_id'];
    $iframe_src = ""; // Set the initial iframe source to empty
    
    if($popup_id == 1) {
        $iframe_src = "iframe1.php";
    } elseif($popup_id == 2) {
        $iframe_src = "iframe2.php";
    } // Add more conditions for other popups
    
    echo "<iframe id='popup_iframe' src='' style='width:100%; height:100%;'></iframe>";
    echo "<script>
            document.getElementById('popup_iframe').src = '{$iframe_src}';
          </script>";
}
?>

Keywords

PHP optimization popups iframes user experience

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