What are some common pitfalls when passing variables using POST in PHP?

One common pitfall when passing variables using POST in PHP is not properly sanitizing user input, which can leave your application vulnerable to security risks such as SQL injection attacks. To solve this issue, always sanitize and validate user input before using it in your application. 

// Sanitize and validate user input before using it
$username = filter_input(INPUT_POST, 'username', FILTER_SANITIZE_STRING);
$email = filter_input(INPUT_POST, 'email', FILTER_VALIDATE_EMAIL);

Keywords

POST variables PHP security validation

Related Questions