How can the selected values from the chainedSelectors be stored in a variable for further use in PHP?

To store the selected values from chained selectors in a variable for further use in PHP, you can use JavaScript to send an AJAX request to a PHP script that processes the selected values and returns them to be stored in a PHP variable. You can then use these values in your PHP code as needed.

// JavaScript code to send AJAX request with selected values from chained selectors
<script>
$(document).ready(function(){
    $('#selector1, #selector2').change(function(){
        var value1 = $('#selector1').val();
        var value2 = $('#selector2').val();
        
        $.ajax({
            url: 'process_selected_values.php',
            type: 'POST',
            data: { value1: value1, value2: value2 },
            success: function(response){
                // Store the response in a PHP variable for further use
                <?php $selectedValues = json_encode(response); ?>
            }
        });
    });
});
</script>

// PHP code in process_selected_values.php to process the selected values and return them
<?php
$value1 = $_POST['value1'];
$value2 = $_POST['value2'];

// Process the selected values as needed
$selectedValues = array('value1' => $value1, 'value2' => $value2);

// Return the selected values
echo json_encode($selectedValues);
?>