Function to capture a value and store it in a variable

Question

I need to capture a value displayed on the website to the user, and then store it in a variable. Ideally, I'd like to do this in functions.php.

More specifically, we use dynamic phone number replacement on the sites, and we’d like to know which phone number is displayed to the user when they are submitting a contact form (via Gravity Forms).

I can wrap the phone number in a class or ID, but am struggling to understand how to write a function to pull this value into a variable.

I have submitted my question to Gravity Forms, but they will not assist. Thanks.

Answer 1

I had a similar task with Contact Form 7, my approach was to add a hidden field to the form in CF7 and then write some jQuery to assign the value to the hidden field when the page was ready.

<script>
    jQuery(document).Ready(function(){
        document.getElementById('hiddeninputID').value = document.getElementById('cphone').value;
    });
</script>

Using the above script is the simplest way to do what you want to achieve, using PHP will work but that may require you to update the PHP code along with the regular Gravity forms updates. The script won't impact on page speed and should always be compatible. Replace hiddeninputID to the ID of the input field that you've added

Update:

To take into account the example provided:

<script>
    jQuery(document).ready(function() {
        var mmPhone = document.getElementById("mm-cphone").innerHTML;

        jQuery("#input_4_10").val(mmPhone);
        jQuery("#input_4_11").val(mmPhone);
    });
</script>

Answer 2

I don't know how are you displaying the phone number but I think you can store needed value using gform_pre_submission hook from gravity form. First add some hidden input and than you can change the field value directly in the functions.php. Example from docs:

add_action( 'gform_pre_submission', 'pre_submission_handler' );
function pre_submission_handler( $form ) {
    $_POST['input_14'] = 'new value for field 14';
}

Update: You can't grab the phone number directly to php. You need some jQuery code to work on it. Something like var phone.

var phone = $('#cphone').text();
$('<some id of the hidden field>').val(phone);

Would be better to use data-attributes to store additional data for a DOM elements.