如何实现记账系统的提醒和通知功能 - 使用PHP开发提醒和通知的方法

function sendEmail($to, $subject, $message) {
  $headers = "From: no-reply@yourdomain.com
";
  $headers .= "Reply-To: no-reply@yourdomain.com
";
  $headers .= "Content-Type: text/html; charset=UTF-8
";

  if (mail($to, $subject, $message, $headers)) {
    echo "邮件发送成功！";
  } else {
    echo "邮件发送失败！";
  }
}

// 获取用户设定的记账时间
$billingTime = getUserBillingTime($userId);

// 检查当前时间是否满足提醒条件
if (shouldRemind($billingTime, "daily")) {
  $to = getUserEmail($userId);
  $subject = "账单提醒";
  $message = "亲爱的用户，您今天需要记账，请及时完成。";
  
  sendEmail($to, $subject, $message);
}

// 获取用户设定的还款日期
$repaymentDate = getUserRepaymentDate($userId);

// 检查当前时间是否满足提醒条件
if (shouldRemind($repaymentDate, "daily")) {
  $to = getUserEmail($userId);
  $subject = "逾期提醒";
  $message = "亲爱的用户，您的还款已逾期，请及时还款。";
  
  sendEmail($to, $subject, $message);
}

$to = getUserEmail($userId);
$subject = "活动通知";
$message = "亲爱的用户，我们将于下周举办精彩活动，请您参加。";

sendEmail($to, $subject, $message);

// 获取用户设定的登录信息
$loginInfo = getUserLoginInfo($userId);

// 检查是否有异常登录行为
if (hasAbnormalLogin($loginInfo)) {
  $to = getUserEmail($userId);
  $subject = "账户安全提醒";
  $message = "亲爱的用户，您的账户出现异常登录，请及时验证。";
  
  sendEmail($to, $subject, $message);
}