What potential pitfalls should be considered when implementing a custom banner rotation script in PHP?

One potential pitfall when implementing a custom banner rotation script in PHP is ensuring that the script is secure and cannot be exploited by malicious users. To mitigate this risk, it is important to sanitize user input and validate the banner images to prevent any potential security vulnerabilities. 

// Example of sanitizing user input in a custom banner rotation script

$banner = filter_input(INPUT_GET, 'banner', FILTER_SANITIZE_STRING);

// Validate the banner image to prevent any potential security vulnerabilities
$allowed_banners = ['banner1.jpg', 'banner2.jpg', 'banner3.jpg'];
if (!in_array($banner, $allowed_banners)) {
    // Handle invalid banner image
    $banner = 'default-banner.jpg';
}

// Display the banner image
echo '<img src="banners/' . $banner . '" alt="Banner Image">';

Keywords

MySQL SQL injection XSS attacks caching performance bottlenecks

Related Questions