What are some potential pitfalls when including different content on specific pages in PHP?

One potential pitfall when including different content on specific pages in PHP is forgetting to sanitize user input before including it in the page. This can lead to security vulnerabilities such as SQL injection or cross-site scripting attacks. To solve this issue, always sanitize user input using functions like htmlentities() or htmlspecialchars() before including it in the page. 

// Example of sanitizing user input before including it in the page
$user_input = $_GET['input'];
$sanitized_input = htmlentities($user_input);
echo $sanitized_input;

Keywords

conditional statements include function file paths error handling page-specific content

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