WooCommerce Pdf Voucher - hide buyer's information while using shortcode [woo_vou_check_code]

woo_vou_hide_voucher_info_fields.php

<?php
/** 
* Handles to hide product information from check voucher code page for frontend
*/
add_filter('woo_vou_check_vou_productinfo_fields', 'woo_vou_hide_product_info_fields');
function woo_vou_hide_product_info_fields( $product_info_columns ){

	if( woo_vou_check_is_frontend_ajax() ){

		if( isset( $product_info_columns['redeemable_price'] )){
			unset( $product_info_columns['redeemable_price'] );
		}
		if( isset( $product_info_columns['item_price'] )){
			unset( $product_info_columns['item_price'] );
		}
	}

	return $product_info_columns;
}


/** 
* Handles to hide voucher information from check voucher code page for frontend
*/
add_filter('woo_vou_check_vou_voucherinfo_fields', 'woo_vou_hide_voucher_info_fields');
function woo_vou_hide_voucher_info_fields( $voucher_info_columns ){

	if( woo_vou_check_is_frontend_ajax() ){

		if( isset( $voucher_info_columns['voucher_data'] )){
			unset( $voucher_info_columns['voucher_data'] );
		}

		if( isset( $voucher_info_columns['logo'] )){
			unset( $voucher_info_columns['logo'] );
		}
	}

	return $voucher_info_columns;
}

/** 
* Handles to hide buyer information from check voucher code page for frontend
*/
add_filter('woo_vou_check_vou_buyerinfo_fields', 'woo_vou_hide_buyer_info_fields');
function woo_vou_hide_buyer_info_fields( $buyer_info_columns ){

	if( woo_vou_check_is_frontend_ajax() ){

		if( isset( $buyer_info_columns['buyer_email'] )){
			unset( $buyer_info_columns['buyer_email'] );
		}

		if( isset( $buyer_info_columns['billing_address'] )){
			unset( $buyer_info_columns['billing_address'] );
		}

		if( isset( $buyer_info_columns['shipping_address'] )){
			unset( $buyer_info_columns['shipping_address'] );
		}

		if( isset( $buyer_info_columns['buyer_phone'] )){
			unset( $buyer_info_columns['buyer_phone'] );
		}
	}

	return $buyer_info_columns;
}

/** 
* Handles to hide order information from check voucher code page for frontend
*/
add_filter('woo_vou_check_vou_orderinfo_fields', 'woo_vou_hide_order_info_fields');
function woo_vou_hide_order_info_fields( $order_info_columns ){

	if( woo_vou_check_is_frontend_ajax() ){

		if( isset( $order_info_columns['payment_method'] )){
			unset( $order_info_columns['payment_method'] );
		}

		if( isset( $order_info_columns['order_total'] )){
			unset( $order_info_columns['order_total'] );
		}

		if( isset( $order_info_columns['order_discount'] )){
			unset( $order_info_columns['order_discount'] );
		}
	}

	return $order_info_columns;
}

/** 
* Handles to check request from frontend
*/
function woo_vou_check_is_frontend_ajax() {

  $script_filename = isset($_SERVER['SCRIPT_FILENAME']) ? $_SERVER['SCRIPT_FILENAME'] : '';
 
  if((defined('DOING_AJAX') && DOING_AJAX))
  {
          $ref = '';
          if ( ! empty( $_REQUEST['_wp_http_referer'] ) )
              $ref = wp_unslash( $_REQUEST['_wp_http_referer'] );
          elseif ( ! empty( $_SERVER['HTTP_REFERER'] ) )
              $ref = wp_unslash( $_SERVER['HTTP_REFERER'] );
 
    //If referer does not contain admin URL and we are using the admin-ajax.php endpoint, this is likely a frontend AJAX request
    if(((strpos($ref, admin_url()) === false) && (basename($script_filename) === 'admin-ajax.php'))){
      return true;
    }
  }
 
  //If no checks triggered, we end up here - not an AJAX request.
  return false;
}