Method: bots.invokeWebViewCustomMethod

Parameters:

Name	Type	Required
bot	Username, chat ID, Update, Message or InputUser	Optional
custom_method	string	Yes
params	DataJSON	Yes

Return type: DataJSON

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();

$DataJSON = $MadelineProto->bots->invokeWebViewCustomMethod(bot: $InputUser, custom_method: 'string', params: $DataJSON, );