如何将 Woocommerce 多个与会者自定义元数据包含到新订单电子邮件中

Question

受 Woocommerce 中将自定义元数据作为带有标题的 html 样式表添加到电子邮件中的启发，我使用以下代码来显示与会者信息：add_action('woocommerce_email_order_details', 'action_after_email_order_details', 25, 4 );function action_after_email_order_details( $order, $sent_to_admin, $plain_text, $email ){   $event = get_post_meta( $order->get_id(), 'WooCommerceEventsOrderTickets', true );   if( ! is_array($event) ) return;   $event = isset($event[1][1]) ? $event[1][1] : '';   if( sizeof($event) == 0 ) return;   $custom = isset($event['WooCommerceEventsCustomAttendeeFields']) ? $event['WooCommerceEventsCustomAttendeeFields'] : '';   // Set our array of needed data   $fields_array = [    __('First name')    => isset($event['WooCommerceEventsAttendeeName']) ? $event['WooCommerceEventsAttendeeName'] : '',    __('Last name')     => isset($event['WooCommerceEventsAttendeeLastName']) ? $event['WooCommerceEventsAttendeeLastName'] : '',   ];   if( ! $event ) return;   // The HTML Structure   $html_output = '<h2>' . __('Attendee Info') . '</h2>   <div class="discount-info">      <table cellspacing="0" cellpadding="6"><tbody>';   // Loop though the data array to set the fields   foreach( $fields_array as $label => $value ):   if( ! empty($value) ):     $html_output .= '<tr>        <th>' . $label . '</th>        <td>' . $value . '</td>    </tr>';   endif;   endforeach;   $html_output .= '</tbody></table>   </div><br>'; // HTML (end)}但它仅显示第一个与会者的信息。是否有一个选项可以包含元数据（仅名字和姓氏）但对于woocommerce_email_order_details挂钩内的所有（多个）与会者？

Answer 1

好吧，我明白了，如果有人需要的话，这是这个函数：

add_action('woocommerce_email_order_details', 'action_after_email_order_details', 25, 4 );

function action_after_email_order_details( $order, $sent_to_admin, $plain_text, $email ) {

$events = get_post_meta( $order->get_id(), 'WooCommerceEventsOrderTickets', true );

if( ! is_array($events) ) return;

$events = isset($events[1]) ? $events[1] : '';

if( ! $events ) return;

// The HTML Structure

$html_output = '<h2>' . __('Attendee Info') . '</h2>

<div class="attendees-info">

    <table cellspacing="0" cellpadding="6"><tbody>';

$i = 1;

foreach( $events as $event ) :

    if( sizeof($event) == 0 ) return;

    // get only first and last name for each attendee

    $attendeeFirstName = isset($event['WooCommerceEventsAttendeeName']) ? $event['WooCommerceEventsAttendeeName'] : '';

    $attendeeLastName = isset($event['WooCommerceEventsAttendeeLastName']) ? $event['WooCommerceEventsAttendeeLastName'] : '';

    $html_output .= '<tr>

    <th>Attendee '. $i . '</th>

    <td>' . $attendeeFirstName .' '.$attendeeLastName. '</td>

    </tr>';

    $i++;

endforeach; 

$html_output .= '</tbody></table>

</div><br>'; // HTML (end)

// The CSS styling

$styles = '<style>

    .attendees-info table{width: 100%; font-family: \'Helvetica Neue\', Helvetica, Roboto, Arial, sans-serif;

        color: #737373; border: 1px solid #e4e4e4; margin-bottom:8px;}

    .attendees-info table th, table.tracking-info td{text-align: left; border-top-width: 4px;

        color: #737373; border: 1px solid #e4e4e4; padding: 12px; width:58%;}

    .attendees-info table td{text-align: left; border-top-width: 4px; color: #737373; border: 1px solid #e4e4e4; padding: 12px;}

</style>';

// The Output CSS + HTML

echo $styles . $html_output;

}