What are some potential pitfalls when using a Textarea for input in PHP forms?

One potential pitfall when using a Textarea for input in PHP forms is not properly sanitizing the user input, which can leave your application vulnerable to cross-site scripting (XSS) attacks. To solve this issue, always use functions like htmlspecialchars() to escape user input before displaying it on your website.

// Sanitize user input from a Textarea field
$user_input = htmlspecialchars($_POST['textarea_input']);