What potential pitfalls should be considered when using hidden fields in PHP forms for data submission and retrieval?

One potential pitfall when using hidden fields in PHP forms is that they can be manipulated by users, leading to security vulnerabilities such as data tampering or injection attacks. To mitigate this risk, it is important to validate and sanitize the data received from hidden fields before processing it. 

// Validate and sanitize data from hidden field before processing
if(isset($_POST['hidden_field'])){
    $hidden_data = filter_var($_POST['hidden_field'], FILTER_SANITIZE_STRING);
    
    // Process the hidden data securely
    // ...
}

Keywords

hidden fields PHP forms data submission data retrieval security risks

Related Questions