What is the best practice for handling dropdown list values in PHP forms?

When handling dropdown list values in PHP forms, it is best practice to use the $_POST superglobal array to retrieve the selected value from the dropdown list. This value can then be sanitized and validated to ensure it is safe to use in your application. 

// Retrieve the selected value from the dropdown list
$selectedValue = $_POST['dropdown'];

// Sanitize and validate the selected value
$selectedValue = filter_var($selectedValue, FILTER_SANITIZE_STRING);

// Use the selected value in your application
echo "Selected value: " . $selectedValue;

Keywords

PHP forms dropdown list handling values form submission validation

Related Questions