FF Booking system

ffbooking.php

<?php
add_action( 'wp_footer', 'booking', 999999999);
function booking(){
    $formId = 43; //Target a specific form here by id
	$fields = wpFluent()->table('fluentform_submissions')
		->where('form_id', $formId)
		->get();
	$toDisable = [];
	foreach ($fields as $key=>$value) {
		$response = json_decode($value->response);
		$toDisable[]= $response->datetime;
	}
    ?>
    <script type="text/javascript">

        jQuery(document).ready(function($){
            function initPicker() {
                var toDisable = [];
	            <?php foreach ($toDisable as $date){?>
                toDisable.push("<?php echo $date?>");
	            <?php }?>

                if(typeof flatpickr == 'undefined') {
                    return;
                }
                flatpickr.localize(window.fluentFormVars.date_i18n);
                var config = {"dateFormat":"d\/m\/Y","enableTime":false,"noCalendar":false,"disableMobile":true,"time_24hr":false};
                try {
                    var customConfig = {
                        disable: toDisable,
                    };
                } catch (e) {
                        var customConfig = {};
                    }
                    var config = $.extend({}, config, customConfig);
                    if (!config.locale) {
                        config.locale = 'default';
                    }
                    
                /**
                 * jQuery('#ff_<?php echo $formId?>_datetime')
                 * date field id, so please use the right field id here
                 * it will return jQuery('#ff_43_datetime')
                  */

                if(jQuery('#ff_<?php echo $formId?>_datetime').length) {
                        flatpickr('#ff_<?php echo $formId?>_datetime', config);
                    }
            }
            initPicker();
                $(document).on('reInitExtras', '.ff_form_instance_<?php echo $formId?>_1', function () {
                    initPicker();
                });
        })
    </script>
    <?php
}