What are the potential pitfalls of using hidden fields in PHP forms for passing data?

Potential pitfalls of using hidden fields in PHP forms for passing data include security risks such as data manipulation or tampering by users, as well as the possibility of exposing sensitive information. To mitigate these risks, it is recommended to validate and sanitize the data received from hidden fields before using it in your application. 

// Validate and sanitize data from hidden field before using it
$hidden_field_data = isset($_POST['hidden_field']) ? $_POST['hidden_field'] : '';
$validated_data = filter_var($hidden_field_data, FILTER_SANITIZE_STRING);

// Now you can safely use $validated_data in your application

Keywords

hidden fields PHP forms data passing security vulnerabilities sensitive information

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