What are some common pitfalls when using PHP for pop-up functionality in a CMS system?

One common pitfall when using PHP for pop-up functionality in a CMS system is not properly escaping user input, which can lead to security vulnerabilities such as cross-site scripting (XSS) attacks. To mitigate this risk, always sanitize and validate user input before using it in your PHP code. 

// Sanitize and validate user input before using it in pop-up functionality
$user_input = $_POST['user_input'];
$sanitized_input = filter_var($user_input, FILTER_SANITIZE_STRING);

// Display pop-up with sanitized input
echo "<script>alert('" . $sanitized_input . "');</script>";

Keywords

PHP pop-up functionality CMS pitfalls error types

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