Telegram Bot custom keyboard in PHP - php

Question

I'm trying to make a Telegram Bot in PHP with a custom keyboard. The message is delivered, but the custom keyboard won't work. $keyb = array('keyboard' => array(array("A", "B"))); also no succes.
The sendMessage method referrers to ReplyKeyboardMarkup for the object. Making an array for ReplyKeyboardMarkup doesn't work. Also tried to json_encode($keyb) but that's also not the solution.
I searched in GitHub for examples but I haven't found one where the custom keyboard is used. Telegram runs on iPhone and desktop, both up-to-date.
Sample code:
$url = "https://api.telegram.org/bot<token>/sendMessage";
$keyb = array('ReplyKeyboardMarkup' => array('keyboard' => array(array("A", "B"))));
$content = array('chat_id' => <chat_id>, 'reply_markup' => $keyb, 'text' => "Test");
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($content));
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded'));
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //fix http://unitstep.net/blog/2009/05/05/using-curl-in-php-to-access-https-ssltls-protected-sites/
// receive server response ...
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$server_output = curl_exec ($ch);
curl_close ($ch);
var_dump($server_output);

Answer 1

The docs seem to indicate you need to provide the reply_markup parameter as a JSON serialised object... kinda stupid for a form POST endpoint:
$replyMarkup = array(
'keyboard' => array(
array("A", "B")
)
);
$encodedMarkup = json_encode($replyMarkup);
$content = array(
'chat_id' => <chat_id>,
'reply_markup' => $encodedMarkup,
'text' => "Test"
);
Does this one work?

Answer 2

$keyboard = array(array("[Destaques]","[Campinas e RMC]","[esportes]"));
$resp = array("keyboard" => $keyboard,"resize_keyboard" => true,"one_time_keyboard" => true);
$reply = json_encode($resp);
$url = $GLOBALS[website]."/sendmessage?chat_id=".$chatId."&text=oi&reply_markup=".$reply;
file_get_contents($url);
This code works fine!

Answer 3

$keyboard = [
'keyboard' => [
[
['text' => 'hourly', 'callback_data' => 'Every hour'],
['text' => 'daily', 'callback_data' => 'Every day'],
['text' => 'weekly', 'callback_data' => 'Every week'],
['text' => 'monthly', 'callback_data' => 'Every month'],
['text' => 'yearly', 'callback_data' => 'Every year'],
] ]
];
this works for me