Detailed explanation of PHP using IMAP method to receive emails

This article mainly introduces the method of PHP receiving emails based on IMAP, and analyzes the relevant settings and usage skills of PHP based on IMAP receiving emails in the form of examples. It also comes with descriptions of IMAP related functions. Friends who need it can refer to it

The example in this article describes how PHP collects emails based on IMAP. I share it with you for your reference. The details are as follows:

I need to deal with the problem of bounced emails in the company’s corporate mailbox: The initial idea was to capture the emails through simulated login. (This kind of thing doesn’t work for me. I said, I have done it many times and I am familiar with it), but the mailbox is still a bit complicated.

Later I remembered that SMTP is used to send emails when sending emails. Remember that you can also receive emails. Use Tencent Enterprise Email Helphttp://service.exmail.qq.com/cgi-bin/help?subtype=1&&id=28&&no=1000584

I saw that both IMAP and POP can receive emails, and then I found that PHP has Built-in IMOP function, written example:

//以腾讯企业邮箱做了测试
$mailServer="imap.exmail.qq.com"; //IMAP主机
$mailLink="{{$mailServer}:143}INBOX" ; //imagp连接地址：不同主机地址不同
$mailUser = '***'; //邮箱用户名
$mailPass = '***'; //邮箱密码
$mbox = imap_open($mailLink,$mailUser,$mailPass); //开启信箱imap_open
$totalrows = imap_num_msg($mbox); //取得信件数
for ($i=1;$i<$totalrows;$i++){
  $headers = imap_fetchheader($mbox, $i); //获取信件标头
  $headArr = matchMailHead($headers); //匹配信件标头
  $mailBody = imap_fetchbody($mbox, $i, 1); //获取信件正文
}
/**
 *
 * 匹配提取信件头部信息
 * @param String $str
 */
function matchMailHead($str){
  $headList = array();
  $headArr = array(
    &#39;from&#39;,
    &#39;to&#39;,
    &#39;date&#39;,
    &#39;subject&#39;
  );
  foreach ($headArr as $key){
    if(preg_match(&#39;/&#39;.$key.&#39;:(.*?)[\n\r]/is&#39;, $str,$m)){
      $match = trim($m[1]);
      $headList[$key] = $key==&#39;date&#39;?date(&#39;Y-m-d H:i:s&#39;,strtotime($match)):$match;
    }
  }
  return $headList;
}

Attached is the IMAP function library:

imap_append:  附加字符串到指定的邮箱中。
imap_base64:  解 BASE64 编码。
imap_body:  读信的内文。
imap_check:  返回邮箱信息。
imap_close:  关闭 IMAP 链接。
imap_createmailbox:  建立新的信箱。
imap_delete:  标记欲删除邮件。
imap_deletemailbox:  删除既有信箱。
imap_expunge:  删除已标记的邮件。
imap_fetchbody:  从信件内文取出指定部分。
imap_fetchstructure:  获取某信件的结构信息。
imap_header:  获取某信件的标头信息。
imap_headers:  获取全部信件的标头信息。
imap_listmailbox:  获取邮箱列示。
imap_listsubscribed:  获取订阅邮箱列示。
imap_mail_copy:  复制指定信件到它处邮箱。
imap_mail_move:  移动指定信件到它处邮箱。
imap_num_msg:  取得信件数。
imap_num_recent:  取得新进信件数。
imap_open:  打开 IMAP 链接。
imap_ping:  检查 IMAP 是否连接。
imap_renamemailbox:  更改邮箱名字。
imap_reopen:  重开 IMAP 链接。
imap_subscribe:  订阅邮箱。
imap_undelete:  取消删除邮件标记。
imap_unsubscribe:  取消订阅邮箱。
imap_qprint:  将 qp 编码转成八位。
imap_8bit:  将八位转成 qp 编码。
imap_binary:  将八位转成 base64 编码。
imap_scanmailbox:  寻找信件有无特定字符串。
imap_mailboxmsginfo:  取得目前邮箱的信息。
imap_rfc822_write_address:  电子邮件位址标准化。
imap_rfc822_parse_adrlist:  解析电子邮件位址。
imap_setflag_full:  配置信件标志。
imap_clearflag_full:  清除信件标志。
imap_sort:  将信件标头排序。
imap_fetchheader:  取得原始标头。
imap_uid:  取得信件 UID。
imap_getmailboxes:  取得全部信件详细信息。
imap_getsubscribed:  列出所有订阅邮箱。
imap_msgno:  列出 UID 的连续信件。
imap_search:  搜寻指定标准的信件。
imap_last_error:  最后的错误信息。
imap_errors:  所有的错误信息。
imap_alerts:  所有的警告信息。
imap_status:  目前的状态信息。

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