如何将WordPress中WooCommerce分期支付邮件代码转为短信提醒

问题 #

现有一段可正常运行的WooCommerce分期支付邮件提醒PHP代码，想要复用逻辑实现短信提醒功能，但将邮件内容适配到短信发送代码后无法成功发送。相关代码如下：

邮件内容代码 #

// email body
<?php
if ( ! defined( 'ABSPATH' ) ) {
    exit ; // Exit if accessed directly
}
?>

<?php do_action( 'woocommerce_email_header', $email_heading, $email ) ; ?>

<?php if ( $payment_order->has_status( 'pending' ) ) : ?>

    <p>
        <?php
        /* translators: 1: product title with installment number 2: payment number */
        printf( wp_kses_post( __( 'Hi, <br>Your Invoice for %1$s from payment #%2$s has been generated. The Payment details are as follows', 'sumopaymentplans' ) ), wp_kses_post( $product_title_with_installment ), esc_html( $payment->get_payment_number() ) ) ;
        ?>
    </p>

<?php endif ; ?>

<?php do_action( 'woocommerce_email_before_order_table', $payment_order, $sent_to_admin, $plain_text, $email ) ; ?>

<h2>
    <?php
    /* translators: 1: payment number */
    printf( wp_kses_post( __( 'Payment #%s', 'sumopaymentplans' ) ), esc_html( $payment->get_payment_number() ) ) ;
    ?>
</h2>

<table class="td" cellspacing="0" cellpadding="6" style="width: 100%; font-family: 'Helvetica Neue', Helvetica, Roboto, Arial, sans-serif;" border="1">
    <thead>
        <tr>
            <th class="td" scope="col" style="text-align:left;"><?php esc_html_e( 'Product', 'sumopaymentplans' ) ; ?></th>
            <th class="td" scope="col" style="text-align:left;"><?php esc_html_e( 'Quantity', 'sumopaymentplans' ) ; ?></th>
            <th class="td" scope="col" style="text-align:left;"><?php esc_html_e( 'Price', 'sumopaymentplans' ) ; ?></th>
        </tr>
    </thead>
    <tbody>
        <?php
        echo wp_kses_post( wc_get_email_order_items( $payment_order, array(
            'show_sku'      => $sent_to_admin,
            'show_image'    => false,
            'image_size'    => array( 32, 32 ),
            'plain_text'    => $plain_text,
            'sent_to_admin' => $sent_to_admin,
        ) ) ) ;
        ?>
    </tbody>
    <tfoot>
        <?php
        $text_align  = is_rtl() ? 'right' : 'left' ;
        $item_totals = $payment_order->get_order_item_totals() ;

        if ( $item_totals ) {
            $i = 0 ;
            foreach ( $item_totals as $total ) {
                $i++ ;
                ?>
                <tr>
                    <th class="td" scope="row" colspan="2" style="text-align:<?php echo esc_attr( $text_align ) ; ?>; <?php echo ( 1 === $i ) ? 'border-top-width: 4px;' : '' ; ?>"><?php echo wp_kses_post( $total[ 'label' ] ) ; ?></th>
                    <td class="td" style="text-align:<?php echo esc_attr( $text_align ) ; ?>; <?php echo ( 1 === $i ) ? 'border-top-width: 4px;' : '' ; ?>"><?php echo wp_kses_post( $total[ 'value' ] ) ; ?></td>
                </tr>
                <?php
            }
        }
        ?>
    </tfoot>
</table>

<p>
    <?php
    /* translators: 1: payment url 2: next payment date */
    printf( wp_kses_post( __( 'Please make the payment using the payment link %1$s on or before <strong>%2$s</strong>', 'sumopaymentplans' ) ), '<a href="' . esc_url( $payment_order->get_checkout_payment_url() ) . '">' . esc_html__( 'pay', 'sumopaymentplans' ) . '</a>', esc_html( _sumo_pp_get_date_to_display( $payment->get_prop( 'next_payment_date' ), 'email' ) ) ) ;
    ?>
</p>

<?php do_action( 'woocommerce_email_footer', $email ) ; ?>

短信发送基础代码 #

// send sms
<?php

$to = $phone;
$message = "body";
wp_sms_send( $to, $msg, true);

?>

已尝试的修改代码（无法运行） #

// send sms
<?php

$to = $phone;
$message = "<?php if ( $payment_order->has_status( 'pending' ) ) : ?>

            <?php
            /* translators: 1: product title with installment number 2: payment number */
            printf( wp_kses_post( __( 'Hi, <br>Your Invoice for %1$s from payment #%2$s has been generated. The Payment details are as follows', 'sumopaymentplans' ) ), wp_kses_post( $product_title_with_installment ), esc_html( $payment->get_payment_number() ) ) ;
            ?>
            
            <?php endif ; ?>

            <?php
            /* translators: 1: payment number */
            printf( wp_kses_post( __( 'Payment #%s', 'sumopaymentplans' ) ), esc_html( $payment->get_payment_number() ) ) ;
            ?>

            <?php
            /* translators: 1: payment url 2: next payment date */
            printf( wp_kses_post( __( 'Please make the payment using the payment link %1$s on or before <strong>%2$s</strong>', 'sumopaymentplans' ) ), '<a href="' . esc_url( $payment_order->get_checkout_payment_url() ) . '">' . esc_html__( 'pay', 'sumopaymentplans' ) . '</a>', esc_html( _sumo_pp_get_date_to_display( $payment->get_prop( 'next_payment_date' ), 'email' ) ) ) ;
            ?>";
wp_sms_send( $to, $msg, true);

?>

解决方案 #

错误原因 #

1. 语法错误：将PHP代码直接嵌入字符串中，PHP不会解析字符串内的<?php ?>标签，导致$message内容为无效文本；同时存在变量名错误——wp_sms_send里用了$msg但定义的变量是$message。
2. 格式不兼容：短信需要纯文本格式，保留HTML标签会导致内容混乱且可读性差。

正确实现代码 #

直接用PHP逻辑拼接纯文本短信内容，替代邮件的HTML渲染逻辑：

// send sms
<?php
if ( ! defined( 'ABSPATH' ) ) {
    exit; // Exit if accessed directly
}

$to = $phone;
$message = '';

// 拼接订单状态提示
if ( $payment_order->has_status( 'pending' ) ) {
    $message .= sprintf( __( 'Hi, Your Invoice for %1$s from payment #%2$s has been generated. Payment details:', 'sumopaymentplans' ), $product_title_with_installment, esc_html( $payment->get_payment_number() ) ) . "\n\n";
}

// 添加支付编号
$message .= sprintf( __( 'Payment #%s', 'sumopaymentplans' ), esc_html( $payment->get_payment_number() ) ) . "\n";

// 拼接商品明细
$message .= __( 'Products:', 'sumopaymentplans' ) . "\n";
foreach ( $payment_order->get_items() as $item ) {
    $message .= "- " . $item->get_name() . " x" . $item->get_quantity() . ": " . wc_price( $item->get_total() ) . "\n";
}

// 拼接订单总价
$message .= "\n" . __( 'Totals:', 'sumopaymentplans' ) . "\n";
$item_totals = $payment_order->get_order_item_totals();
if ( $item_totals ) {
    foreach ( $item_totals as $total ) {
        $message .= $total['label'] . ": " . $total['value'] . "\n";
    }
}

// 拼接支付链接和截止日期
$payment_link = esc_url( $payment_order->get_checkout_payment_url() );
$due_date = esc_html( _sumo_pp_get_date_to_display( $payment->get_prop( 'next_payment_date' ), 'email' ) );
$message .= "\n" . sprintf( __( 'Pay here: %1$s before %2$s', 'sumopaymentplans' ), $payment_link, $due_date );

// 发送短信（修正变量名错误）
wp_sms_send( $to, $message, true);
?>

关键修改说明 #

• 移除所有HTML标签，用\n实现换行，适配短信的纯文本阅读习惯
• 直接通过PHP逻辑拼接字符串，避免在字符串中嵌套PHP代码的语法错误
• 遍历订单商品生成简洁的纯文本明细，替代邮件专用的HTML渲染函数wc_get_email_order_items
• 修正变量名错误：将wp_sms_send中的$msg改为定义好的$message
• 简化翻译字符串，移除HTML相关占位符，适配纯文本格式

内容的提问来源于stack exchange，提问作者Godfrey Odhiambo