What best practices should be followed when implementing a rotating banner advertisement feature using PHP and JavaScript?

When implementing a rotating banner advertisement feature using PHP and JavaScript, it is important to ensure that the banners are displayed randomly and that they rotate at a specified interval. To achieve this, you can create an array of banner images in PHP and use JavaScript to randomly select and display a banner at regular intervals. 

<?php
// Array of banner images
$bannerImages = array(
    'banner1.jpg',
    'banner2.jpg',
    'banner3.jpg'
);

// Get a random banner image
$randomBanner = $bannerImages[array_rand($bannerImages)];
?>

<script>
// Function to display a random banner image
function displayBanner() {
    var bannerImages = <?php echo json_encode($bannerImages); ?>;
    var randomIndex = Math.floor(Math.random() * bannerImages.length);
    var banner = bannerImages[randomIndex];
    
    // Display the banner image
    document.getElementById('banner').src = banner;
}

// Rotate banners every 5 seconds
setInterval(displayBanner, 5000);
</script>

<!-- HTML code to display the banner -->
<img id="banner" src="<?php echo $randomBanner; ?>" alt="Banner Advertisement">

Keywords

PHP JavaScript rotating banner advertisement feature implementation

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