我想在foreach循环中显示学生（订阅者）id。这是我的密码

$args = array (
    \'role\' => \'student\'
);
$wp_user_query = new WP_User_Query($args);
$students = $wp_user_query->get_results();

if (!empty($students)) {
    foreach ($students as $student) {
        $student_info = get_userdata($student->ID);
        echo \'<p class="username">\' . $student_info->first_name . \' \' . $student_info->last_name . \'</p>\';
        echo $student_info->user_id;
     }
}else {
    echo \'No students found\';
}