Are there specific best practices or guidelines for handling user inputs in the $_SESSION array to prevent security vulnerabilities?

When handling user inputs in the $_SESSION array, it is essential to sanitize and validate the data to prevent security vulnerabilities such as injection attacks or malicious code execution. One way to achieve this is by using filtering functions like filter_input() or filter_var() to ensure that only expected data types and formats are stored in the session variables. 

// Sanitize and validate user input before storing in the session
$userInput = filter_input(INPUT_POST, 'user_input', FILTER_SANITIZE_STRING);

if($userInput){
    $_SESSION['user_input'] = $userInput;
}

Keywords

$_SESSION array user inputs security vulnerabilities validation sanitization

Related Questions