我使用插件“代碼片段”在 wordpress 中放入以下代碼。我用以下代碼更改了字幕：add_filter('woocommerce_thankyou_order_received_text', 'woo_change_order_received_text', 10, 2 );function woo_change_order_received_text( $str, $order ) {    $new_str = 'Deine Bestellung ist bei uns eingegangen und wird umgehend von uns bearbeitet.';    return $new_str;}它工作得很好，但我想在客戶購買特定產(chǎn)品時添加不同的文本。我發(fā)現(xiàn)了以下代碼：<?php $present = false; ?><?php foreach( $order->get_items() as $item ):      $_product = wc_get_product( $item['product_id'] );         // Add whatever product id you want below here        if ( $item['product_id'] == 643 ):                  $present = true; ?><?php endif; endforeach; ?><?php if( $present ): ?>    <p class="woocommerce-notice woocommerce-notice--success woocommerce-thankyou-order-received"><?php echo apply_filters( 'woocommerce_thankyou_order_received_text', __( 'Thank you for buying this shirt', 'woocommerce' ), $order ); ?></p><?php else: ?>    <p class="woocommerce-notice woocommerce-notice--success woocommerce-thankyou-order-received"><?php echo apply_filters( 'woocommerce_thankyou_order_received_text', __( 'Thank you. Your order has been received.', 'woocommerce' ), $order ); ?></p><?php endif; ?>但是當我將它添加到主題的 functions.php 或插件“代碼片段”時，它失敗了。