Hi @ageibert
I believe you can get the label and value pairs with the get_field_object() function. So you can do it like this:
$the_input = '12'; // The input from users
// Get the select field object
$select_object = get_field_object('select_field_name');
// Search the field value based on the label
$userInput = array_search($the_input, $select_object['choices']);
print_r($userInput);
I hope this helps 🙂
