Why, when passing a php variable to a script, are the data encoded in uft-8?

The question is not simple.

It concerns the settings of the payment system in the online store woocommerce . The problem is this: the php variable (email address) is transferred to the script for some reason, encoded.

To get started, I get these email fields entered by the user. Using var_dump, I check that the variable contains correct information (email o4137889@nwytg.net ), but when the variable is passed inside the script

accountId: '<?=$order->billing_email?>'

I get this coded string in utf-8 accountId: 'o4137889@nwytg.net' ,

Moreover, it doesn’t matter whether it is output via abbreviated <?= ?> Or <?php ?> And echo

accountId: '<?php echo $billing_email ?>' ,

, through a variable or directly - the result is identical each time.

What can it be connected with and how to fix it?

 global $woocommerce; $order = new WC_Order( $order_id ); var_dump($order->billing_email); //o4137889@nwytg.net <script src="https://widget.cloudpayments.ru/bundles/cloudpayments"></script> <script> var widget = new cp.CloudPayments(); widget.<?=$widget_f?>({ // options <!-- /////////////??????????????? --> publicId: '<?=$this->public_id?>', //id из личного кабинета description: 'Оплата заказа <?=$order_id?>', //назначение amount: <?=$order->get_total()?>, //сумма currency: '<?=$this->currency?>', //валюта invoiceId: <?=$order_id?>, //номер заказа accountId: '<?=$order->billing_email?>', //идентификатор плательщика data: <?php echo (($this->kassa_enabled == 'yes') ? json_encode($kassa_array) : "{}") ?> }, function (options) { // success window.location.replace('<?=$this->get_return_url($order)?>'); }, function (reason, options) { // fail window.location.replace('<?=$order->get_cancel_order_url()?>'); } ); </script> 

The server is on unix managed by vesta cp with php version 7.2