Скрипт уведомления о новых письмах в телеграм

config.php

<?php

/** @var string $timeZone */
$timeZone = 'Europe/Moscow';

/** @var bool $displayErrors */
$displayErrors = false;

/** @var array $mailConfig */
$mailConfig = [
    'Yandex' => [
        'address'  => '{imap.yandex.ru:993/imap/ssl}',
        'login'    => 'my',
        'password' => 'myapppassword',
        'folders'  => ['INBOX', 'Spam', 'Folder1', 'Folder1|Subfolder']
    ],
    'Google' => [
        'address'  => '{imap.gmail.com:993/imap/ssl/novalidate-cert}',
        'login'    => 'my@gmail.com',
        'password' => 'myapppassword',
        'folders'  => ['INBOX']
    ]
];

/** @var array $telegramConfig */
$telegramConfig = [
    'token'  => 'telegram bot token',
    'chatId' => 'telegram chat ID'
];

func.php

<?php

/**
 * check_utf8
 *
 * @param  string $charset
 * @return bool
 */
function check_utf8(string $charset): bool
{
    return in_array(strtolower($charset), ['utf-8', 'default']);
}

/**
 * convert_to_utf8
 *
 * @param  string $in_charset
 * @param  string $str
 * @return string
 */
function convert_to_utf8(string $in_charset, string $str): string
{
    return (string)iconv(strtolower($in_charset), 'utf-8', $str);
}

/**
 * get_imap_title
 *
 * @param  string $str
 * @return string
 */
function get_imap_title(string $str): string
{
    $mime = imap_mime_header_decode($str);
    $title = '';
    foreach ($mime as $m) {
        if (!check_utf8($m->charset)) {
            $title .= convert_to_utf8($m->charset, $m->text);
        } else {
            $title .= $m->text;
        }
    }
    return $title;
}

/**
 * timezone_offset_string
 *
 * @return string
 */
function timezone_offset_string(): string
{
    $offset = timezone_offset_get(new DateTimeZone(date_default_timezone_get()), new DateTime());
    return sprintf('%s%02d%02d', ($offset >= 0) ? '+' : '-', abs($offset / 3600), abs($offset % 3600) / 60);
}

/**
 * get_mails
 *
 * @param  array $mailBoxes
 * @param  int $ts
 * @param  string $tzos
 * @return array
 */
function get_mails(array $mailBoxes, int $ts, string $tzos = '+0000'): array
{
    $mails = [];
    $dt = date('d-M-Y H:i:00 ', $ts - (3600 * 6)) . $tzos;
    foreach ($mailBoxes as $key => $mailBox) {
        $folders = isset($mailBox['folders']) ? $mailBox['folders'] : ['INBOX'];
        foreach ($folders as $folder) {
            $mailKey = $key . ($folder == 'INBOX' ? '' : ' ' . $folder);
            $imap = imap_open(
                $mailBox['address'] . mb_convert_encoding($folder, 'UTF7-IMAP', 'UTF-8'),
                $mailBox['login'],
                $mailBox['password']
            );
            if ($imap !== false) {
                $keys = imap_search($imap, 'SINCE "' . $dt . '"');
                if ($keys) {
                    for ($i = (int)$keys[0]; $i <= (int)$keys[array_key_last($keys)]; $i++) {
                        $msgHeader = imap_headerinfo($imap, $i);
                        if ($msgHeader->udate > $ts) {
                            $mails[$mailKey][$i]['udate'] = $msgHeader->udate;
                            foreach ($msgHeader->from as $data) {
                                $mails[$mailKey][$i]['from'] = isset($data->personal)
                                    ? get_imap_title($data->personal) . ' (' . $data->mailbox . '@' . $data->host . ')'
                                    : $data->mailbox . '@' . $data->host;
                            }
                            $mails[$mailKey][$i]['title'] = get_imap_title($msgHeader->subject);
                        }
                    }
                }
                imap_close($imap);
            } else {
                throw new Exception((string)imap_last_error());
            }
        }
    }
    return $mails;
}

/**
 * file_get_contents_curl
 *
 * @param  string $url
 * @return string
 */
function file_get_contents_curl(string $url): string
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    $data = (string)curl_exec($ch);
    curl_close($ch);
    return $data;
}

/**
 * seng_to_telegram
 *
 * @param  array $config
 * @param  string $text
 * @return array
 */
function seng_to_telegram(array $config, string $text): array
{
    $urlSend = 'https://api.telegram.org/bot%s/sendMessage?'
        . 'chat_id=%s&parse_mode=Markdown&text=%s&disable_web_page_preview=1';
    $arr = explode('%0A', $text);
    foreach ($arr as $k => $str) {
        $arr[$k] = urlencode($str);
    }
    $text = str_replace('_', '\_', implode('%0A', $arr));
    $result = json_decode(file_get_contents_curl(sprintf($urlSend, $config['token'], $config['chatId'], $text)), true);
    return $result;
}

/**
 * get_folders_list
 *
 * @param  object $imap IMAP\Connection
 * @param  string $url
 * @return array
 */
function get_folders_list(object $imap, string $url): array
{
    $list = imap_list($imap, $url, '*') ?: [];
    foreach ($list as $key => $folder) {
        $list[$key] = mb_convert_encoding($folder, 'UTF-8', 'UTF7-IMAP');
    }
    return $list;
}

mail.php

<?php

/**
 * Скрипт уведомления о новых письмах в телеграм
 * Работает через IMAP
 * Для Яндекса и Google необходимо включить IMAP в настройках почтового ящика и создать пароль приложения
 */

include_once __DIR__ . '/config.php';
include_once __DIR__ . '/func.php';

date_default_timezone_set($timeZone);
ini_set('display_errors', $displayErrors ? '1' : '0');
error_reporting($displayErrors ? E_ALL : 0);

$ts = $ats = time();
if (file_exists(__DIR__ . '/ts.dat')) {
    $ts = (int)file_get_contents(__DIR__ . '/ts.dat');
}
file_put_contents(__DIR__ . '/ts.dat', $ats);

$tzos = timezone_offset_string();
$mails = get_mails($mailConfig, $ts, $tzos);

if ($mails) {
    foreach ($mails as $mailName => $mailBox) {
        foreach ($mailBox as $mail) {
            $text =
                '*' . $mailName . '* | ' . date('H:i, d.m.Y', $mail['udate']) . '%0A' .
                '`' . $mail['title'] . '`%0A' .
                '`' . $mail['from'] . '`%0A';
            seng_to_telegram($telegramConfig, $text);
        }
    }
}