Method: messages.reportReaction

Parameters:

Name	Type	Description	Required
peer	Username, chat ID, Update, Message or InputPeer	Peer where the message was sent	Optional
id	int	Message ID	Optional
reaction_peer	Username, chat ID, Update, Message or InputPeer	Peer that sent the reaction	Optional

Return type: Bool

Can userbots use this method: YES

Can bots use this method: NO

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();

$Bool = $MadelineProto->messages->reportReaction(peer: $InputPeer, id: $int, reaction_peer: $InputPeer, );