Determine the implementation method
There are two protocols for reading emails: POP3 and IMAP, the difference is: The POP3 protocol allows email clients to download emails on the server, but operations on the client will not be fed back to the server. IMAP Provides two-way communication between webmail and email clients. Operations on the client will be fed back to the server. For operations on emails, the emails on the server will also take corresponding actions.
The requirement requires that after processing the user's email, the email should be marked as processed, so the IMAP protocol is selected.
Installation dependencies
Both local and server php need to install the imap extension. Add the php-imap (https://github.com/barbushin/php-imap) extension to the project's composer.json as follows:
"require": {
"php-imap/php-imap": "^3.1",
},
Configure related services
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
);
}
Get a list of all unread messages
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];
}
Mark certain messages as read
/**
* @param array $mail_ids
* @return mixed
*/
public function markRead($mail_ids)
{
return $this->mailbox->markMailsAsRead($mail_ids);
}
Search for messages with specified topics and mark them as read
$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'));
}
}