How to add a user to telegram contacts?

Question

Python

How to add a user to the contact book in telegram through the telethon library, knowing only his id?

Answer 1

contact = InputPhoneContact(client_id = 0, phone = "[phone]", first_name="ABC", last_name="abc")
result = client.invoke(ImportContactsRequest([contact], replace=True))

www.stackoverflow.com

Answer 2

$keys = array_keys($arr["ELEMENTS"]);
sort($keys);
$arr["ELEMENTS"] = array_map(function ($val) {
    return [
        $val => [
            "ID" => $val
        ]
    ];
}, $keys);

Answer 3

Haven't tested it, but have a look at this one:

usort($arr['ELEMENTS'], function($a, $b){ return $a['ID'] > $b['ID'] });