如何在单击事件- Contact form 7上添加图像？

add_action( 'wpcf7_before_send_mail', 'add_image_to_email' );
function add_image_to_email( $contact_form ) {
    $form_id = $contact_form->id();
    $submission = WPCF7_Submission::get_instance();

    if ( $submission ) {
        $uploaded_files = $submission->uploaded_files();

        if ( $uploaded_files ) {
            $mail = $contact_form->prop( 'mail' );

            foreach ( $uploaded_files as $name => $path ) {
                $mail['body'] .= "\n\n";
                $mail['body'] .= '[image:' . $name . ']'; // 添加图片到邮件正文中
            }

            $contact_form->set_properties( array( 'mail' => $mail ) );
        }
    }
}