覆盖WooCommerce电子邮件的最简单方法是复制WooCommerce/模板/电子邮件/管理新订单。php到yourtheme/woocommerce/emails/admin新订单。并对模板的版本进行任何更改。这将确保您所做的任何更改不会在任何后续升级过程中丢失。

电子邮件主题行中显示的文本通过GUI控制，如果您希望始终保持“新订单”文本不变，则可能需要更改。

但是，如果您真的想通过函数更改标题文本。php文件，您可能会挂接到“woocommerce\\u email\\u header”：

function action_woocommerce_email_header( $email_heading ) { 
    // Change the email heading in here.
}; 
add_action( \'woocommerce_email_header\', \'action_woocommerce_email_header\', 10, 1 );

function action_woocommerce_email_header( $email_heading ) { 
    $new_email_heading = str_replace( \'New customer order\', \'New order\', $email_heading );
    return $new_email_heading;
}; 
add_action( \'woocommerce_email_header\', \'action_woocommerce_email_header\', 10, 1 );

您可以对此使用筛选器：

/*
 * goes in theme functions.php or a custom plugin
 *
 *   woocommerce_email_heading_new_order
 *   woocommerce_email_heading_customer_processing_order
 *   woocommerce_email_heading_customer_completed_order
 *   woocommerce_email_heading_customer_invoice
 *   woocommerce_email_heading_customer_note
 *   woocommerce_email_heading_low_stock
 *   woocommerce_email_heading_no_stock
 *   woocommerce_email_heading_backorder
 *   woocommerce_email_heading_customer_new_account
 *   woocommerce_email_heading_customer_invoice_paid
 *
 * USAGE: add_filter(\'woocommerce_email_heading_new_order\', \'my_filter_email_heading_new_order\', 10, 2);
 *
 **/


function my_filter_email_heading_new_order($email_heading, $email){

    /* get info if needed */
    $order_id = $email->get_id();

    /* Translated version *
    $email_heading = sprintf( __(\'Order #%1$s\', \'twenty-sixteen\'), $order_id );

    /* simple version */
    $email_heading = \'Hello world\';

    return $email_heading;
}
add_filter(\'woocommerce_email_heading_new_order\', \'my_filter_email_heading_new_order\', 10, 2);