telegramStorage.php

<?php
include('vendor/api/autoload.php'); //Подключаем библиотеку
use Telegram\Bot\Api; 

/*
 * Input: file_name
 * Output: file_content
 */

Class TelegramStorage {
	private $telegram = null;
	private $chat_id = '@my_activity';
	private $token = null;

	function __construct($token = null) {
		$this->token = $token;
		$this->telegram = new Api($this->token); //Устанавливаем токен, полученный у BotFather
	}

	public function getFile($localpath) {
		$file_name = $this->prepareFileName($localpath);
		$file_id = $this->getFileId($file_name);
		if($file_id) {
			$answer = $this->telegram->getFile(['chat_id' => $this->chat_id, 'file_id' => $file_id]);
			$url = 'https://api.telegram.org/file/bot' . $this->token . '/' . $answer['file_path'];
			return $url;
		} else {
			return false;
		}
	}

	public function saveFile($localpath = '') {
		$file_name = $this->prepareFileName($localpath);
		$key = md5($file_name);
		$tData = $this->telegram->sendDocument([ 'chat_id' => $this->chat_id, 'document' => $localpath ]);
		$file_id = $tData['document']['file_id'];
		$this->memcachedSet($key,$file_id);
		return $file_id;
	}

	private function getFileId($file_name) {
		$key = md5($file_name);
		echo 'get key: ' . $key . "\r\n";
		$a = $this->memcachedGet($key);
		return $a;
	}

	private function memcachedSet($key,$val) {
		$mem_var = $this->createMemcached_server();
		echo 'set key: ' . $key . "\r\n";
		$response = $mem_var->set($key,$val);
		if ($response) {
			return $response;
		} else {
			return false;
		}
	}

	private function memcachedGet($key) {
		$mem_var = $this->createMemcached_server();
		$response = $mem_var->get($key);
		if ($response) {
			return $response;
		} else {
			return false;
		}
	}

	private function createMemcached_server(){
		$mem_var = new Memcached();
		$mem_var->addServer("127.0.0.1", 11211);
		return $mem_var;
	}

	private function prepareFileName($localpath) {
		$match = explode('/',$localpath);
		$file_name = $match[ sizeof( $match ) - 1 ];
		return $file_name;
	}
}

?>