WooCommerce邮件模板高级定制：实现文本格式化与动态内容插入

<?php if ( $order->needs_payment() ) { ?>
    <p>
    <?php
    $allowed_html_tags = array(
        'a' => array(
            'href' => array(),
        ),
        'i' => array(), // 允许<i>标签
        'em' => array(), // 或者允许<em>标签，语义上更推荐
    );

    printf(
        wp_kses(
            /* translators: %1$s Site title, %2$s Order pay link */
            __( 'We’re delighted to let you know that the first print of <i>The Versatile Home</i> is now available and we are able to fulfil your pre-order. Your invoice is below and here is a link to make payment: %2$s', 'woocommerce' ),
            $allowed_html_tags // 使用更新后的允许标签列表
        ),
        esc_html( get_bloginfo( 'name', 'display' ) ),
        '<a href="' . esc_url( $order->get_checkout_payment_url() ) . '">' . esc_html__( 'click here to pay by credit/debit card or PayPal', 'woocommerce' ) . '</a>'
    );
    ?>
    </p>
<?php } ?>

<?php if ( $order->needs_payment() ) { ?>
    <p>
    <?php
    $allowed_html_tags = array(
        'a' => array(
            'href' => array(),
        ),
        'i' => array(),
        'em' => array(),
    );

    // 第一段内容
    printf(
        wp_kses(
            /* translators: %1$s Site title, %2$s Order pay link */
            __( 'We’re delighted to let you know that the first print of <i>The Versatile Home</i> is now available and we are able to fulfil your pre-order. Your invoice is below and here is a link to make payment: %2$s', 'woocommerce' ),
            $allowed_html_tags
        ),
        esc_html( get_bloginfo( 'name', 'display' ) ),
        '<a href="' . esc_url( $order->get_checkout_payment_url() ) . '">' . esc_html__( 'click here to pay by credit/debit card or PayPal', 'woocommerce' ) . '</a>'
    );
    ?>
    </p>

    <p>
    <?php
    // 获取订单号
    $order_number = $order->get_order_number();

    // 第二段内容，包含动态订单号
    printf(
        wp_kses(
            /* translators: %1$s Order number */
            __( 'Alternatively, you can make payment by bank transfer to Sort Code: 00-00-00, Acct #: 00000000, Acct name: xxxxx, quoting order # %1$s as the reference. As soon as we’ve received the payment we’ll get your order off to you straight away.', 'woocommerce' ),
            $allowed_html_tags // 沿用第一段的允许标签列表，尽管这里可能不需要斜体
        ),
        esc_html( $order_number ) // 确保订单号被安全输出
    );
    ?>
    </p>
<?php } ?>