Are there any specific PHP functions or methods recommended for handling user input securely?

When handling user input in PHP, it is crucial to sanitize and validate the input to prevent security vulnerabilities such as SQL injection or cross-site scripting attacks. One recommended approach is to use PHP's filter_input function along with appropriate filter flags to sanitize and validate user input effectively. 

$user_input = filter_input(INPUT_POST, 'user_input', FILTER_SANITIZE_STRING);
if ($user_input === false) {
    // Handle invalid input
} else {
    // Proceed with sanitized user input
}

Keywords

filter_input htmlspecialchars prepared statements password_hash validation

Related Questions