Method: payments.refundStarsCharge

Parameters:

Name	Type	Required
user_id	Username, chat ID, Update, Message or InputUser	Optional
charge_id	string	Optional

Return type: Updates

Can bots use this method: YES

MadelineProto Example (now async for huge speed and parallelism!):

if (!file_exists('madeline.php')) {
    copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
include 'madeline.php';

$MadelineProto = new \danog\MadelineProto\API('session.madeline');
$MadelineProto->start();

$Updates = $MadelineProto->payments->refundStarsCharge(user_id: $InputUser, charge_id: 'string', );