What are the potential risks of not properly sanitizing user input in PHP scripts, as seen in the forum thread example?

The potential risks of not properly sanitizing user input in PHP scripts include SQL injection, cross-site scripting (XSS) attacks, and other security vulnerabilities. To mitigate these risks, it is crucial to sanitize user input by using functions like htmlentities() or mysqli_real_escape_string() before using it in database queries or displaying it on the webpage. 

$user_input = $_POST['user_input'];
$sanitized_input = htmlentities($user_input);
// Use $sanitized_input in your code to prevent SQL injection or XSS attacks

Keywords

SQL injection cross-site scripting (XSS) security vulnerabilities data validation input filtering

Related Questions