确定实现方式
读取邮件的协议有POP3和IMAP两种，区别：POP3协议允许电子邮件客户端下载服务器上的邮件，但是在客户端的操作，不会反馈到服务器上。IMAP提供webmail与电子邮件客户端之间的双向通信，客户端的操作都会反馈到服务器上，对邮件进行的操作，服务器上的邮件也会做相应的动作。
需求要求处理完用户的邮件以后，将邮件标记为已处理，因此选用IMAP协议。
安装依赖
本地、服务器php均需要安装imap扩展。在项目的composer.json中添加php-imap(https://github.com/barbushin/php-imap)扩展如下：
"require": {
"php-imap/php-imap": "^3.1",
},
配置相关服务
namespace app\library\service\mail;
use PhpImap\Exceptions\ConnectionException;
use PhpImap\Mailbox;
/**
* 收邮件服务邮件API接口
* Class PlayService
* @package app\library\service
*/
class ImapService
{
public $path = '{imap.263.net:993/imap/ssl}INBOX'; // IMAP server and mailbox folder
public $login = 'user@263.cn'; // Username for the before configured mailbox
public $password = 'pwd'; // Password for the before configured username
public $dir = null; // Directory, where attachments will be saved (optional)
public $encoding = 'UTF-8'; // Server encoding (optional)
public $mailbox;
public function __construct()
{
$this->mailbox = new Mailbox(
$this->path,
$this->login,
$this->password,
$this->dir,
$this->encoding
);
}
获取所有未读邮件列表
public function unSeenList()
{
try {
$mail_ids = $this->mailbox->searchMailbox('UNSEEN');
} catch (ConnectionException $ex) {
die('IMAP connection failed: ' . $ex->getMessage());
} catch (\Exception $ex) {
die('An error occured: ' . $ex->getMessage());
}
// If $mailsIds is empty, no emails could be found
if (!$mail_ids) {
die('Mailbox is empty');
}
try {
$info = $this->mailbox->getMailsInfo($mail_ids);
} catch (ConnectionException $ex) {
echo "IMAP connection failed: " . $ex;
die();
}
return ['ids' => $mail_ids, 'list' => $info];
}
将某些邮件标记为已读
/**
* @param array $mail_ids
* @return mixed
*/
public function markRead($mail_ids)
{
return $this->mailbox->markMailsAsRead($mail_ids);
}
搜索指定主题的邮件并标记为已读
$imap = new ImapService();
$condition = 'UNSEEN SUBJECT "' . $title . '" SINCE "' . date('Y-m-d', strtotime('-1 days')) . '" FROM ' . $mail;
$data['mail'] = $imap->mailbox->searchMailbox($condition);
if (!empty($data['mail'])) {
$data['info'] = $imap->mailbox->getMailsInfo($data['mail']);
if ($params['mark'] == 1) {
$data['mark'] = $imap->markRead(array_column($data['info'], 'uid'));
}
}