What potential security risks are associated with using PHP code in form submissions?

Potential security risks associated with using PHP code in form submissions include SQL injection, cross-site scripting (XSS), and remote code execution. To mitigate these risks, it is essential to sanitize and validate user input before processing it in the PHP code. 

// Sanitize and validate user input from a form submission
$username = htmlspecialchars($_POST['username']);
$email = filter_var($_POST['email'], FILTER_SANITIZE_EMAIL);
$password = password_hash($_POST['password'], PASSWORD_DEFAULT);

Keywords

SQL injection cross-site scripting CSRF input validation data sanitization

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