The constructor accepts an optional parameter, which is the settings array. This array contains some other arrays, which are the settings for a specific MadelineProto function.
See [here](https://github.com/danog/MadelineProto/blob/master/src/danog/MadelineProto/MTProto.php#L99) for the default values for the settings arrays and explanations for every setting.
You can provide part of any subsetting array, that way the remaining arrays will be automagically set to default and undefined values of specified subsetting arrays will be set to the default values.
When an update is received, the update callback function (see settings) is called. By default, the get_updates_update_handler MadelineProto method is called. This method stores all incoming updates into an array (its size limit is specified by the updates\_array\_limit parameter in the settings) and can be fetched by running the `get_updates` method.
This method accepts an array of options as the first parameter, and returns an array of updates (an array containing the update id and an object of type [Update](https://daniil.it/MadelineProto/API_docs/types/Update.html)). Example:
$updates = $MadelineProto->API->get_updates(['offset' => $offset, 'limit' => 50, 'timeout' => 1]); // Just like in the bot API, you can specify an offset, a limit and a timeout
Every method described in this section accepts a last optional paramater with a callable function that will be called during the upload/download using the first parameter to pass a floating point number indicating the upload/download status in percentage.
The upload method returns an [InputFile](https://daniil.it/MadelineProto/API_docs/types/InputFile.html) object that must be used to generate an [InputMedia](https://daniil.it/MadelineProto/API_docs/types/InputMedia.html) object, that can be later sent using the [sendmedia method](https://daniil.it/MadelineProto/API_docs/methods/messages_sendMedia.html).
```
$inputFile = $MadelineProto->upload('file', 'optional new file name.ext');
To convert the result of sendMedia to a bot API file id select the messageMedia object from the output of the method and pass it to `$MadelineProto->API->MTProto_to_botAPI()`.
The first parameter of these functions must always be either a [messageMediaPhoto](https://daniil.it/MadelineProto/API_docs/constructors/messageMediaPhoto.html) or a [messageMediaDocument](https://daniil.it/MadelineProto/API_docs/constructors/messageMediaDocument.html) object or a bot API file id. These objects are usually received in updates, see `bot.php` for examples
$MadelineProto->download_to_stream($message_media, $stream, $cb, $offset, $endoffset); // offset and endoffset are optional parameters that specify the byte from which to start downloading and the byte where to stop downloading (the latter non-inclusive), if not specified default to 0 and the size of the file
To call an MTProto method simply call it as if it is a method of the API class, substitute namespace sepators (.) with -> if needed.
Also, an object of type User, InputUser, Chat, InputChannel, Peer or InputPeer must be provided as a parameter to a method, you can substitute it with the user/group/channel's username or bot API id.
The API class also provides some wrapper methods for logging in as a bot or as a normal user, and for getting inputPeer constructors to use in sendMessage and other methods:
$authorization = $MadelineProto->bot_login($token); // Note that every time you login as a bot or as a user MadelineProto will logout first, so now MadelineProto is logged in as the bot with token $token, not as the user with number $number
Methods that allow sending message entities (messages.sendMessage for example) also have an additional parse_mode parameter that enables or disables html/markdown parsing of the message to be sent. See the method-specific documentation for more info.
To convert the results of methods to bot API objects you must provide a second parameter to method wrappers, containing an array with the `botAPI` key set to true.
Note that when you login as a bot, MadelineProto also logins using the [PWRTelegram](https://pwrtelegram.xyz) API, to allow persistant storage of peers, even after a logout and another login.
An istance of MadelineProto can be safely serialized or unserialized. To serialize MadelineProto to a file, usage of the `\danog\MadelineProto\Serialization` class is recommended:
That class serializes only if the `$MadelineProto->API->should_serialize` boolean is set to true.
The same operation should be done when serializing to another destination manually, to avoid conflicts with other PHP scripts that are trying to serialize another instance of the class.
AckHandler - Handles acknowledgement of incoming and outgoing mtproto messages
AuthKeyHandler - Handles generation of the temporary and permanent authorization keys
CallHandler - Handles synchronous calls to mtproto methods or objects, also basic response management (waits until the socket receives a response)
Crypt - Handles ige and aes encryption
MessageHandler - Handles sending and receiving of mtproto messages (packs TL serialized data with message id, auth key id and encrypts it with Crypt if needed, adds them to the arrays of incoming and outgoing messages)
MsgIdHandler - Handles message ids (checks if they are valid, adds them to the arrays of incoming and outgoing messages)
ResponseHandler - Handles the content of responses received, service messages, rpc results, errors, and stores them into the response section of the outgoing messages array)
API - Wrapper class that instantiates the MTProto class, sets the error handler, provides a wrapper for calling mtproto methods directly as class submethods, and uses the simplified wrappers from Wrappers/
APIFactory - Provides a wrapper for calling namespaced mtproto methods directly as class submethods
Connection - Handles tcp/udp/http connections and wrapping payloads generated by MTProtoTools/MessageHandler into the right message according to the protocol, stores authorization keys, session id and sequence number
DataCenter - Handles mtproto datacenters (is a wrapper for Connection classes)
