# Method: channels.checkUsername
Check if a username is free and can be assigned to a channel/supergroup
# Parameters:
Name | Type | Description | Required |
---|---|---|---|
channel | Username, chat ID, Update, Message or InputChannel | The channel/supergroup that will assigned the specified username | Optional |
username | string | The username to check | Yes |
# Return type: Bool
# 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->channels->checkUsername(['channel' => InputChannel, 'username' => 'string', ]);
Or, if you’re into Lua:
Bool = channels.checkUsername({channel=InputChannel, username='string', })
# Errors
Code | Type | Description |
---|---|---|
400 | CHANNEL_INVALID | The provided channel is invalid |
400 | CHANNELS_ADMIN_PUBLIC_TOO_MUCH | You’re admin of too many public channels, make some channels private to change the username of this channel |
400 | CHAT_ID_INVALID | The provided chat id is invalid |
400 | USERNAME_INVALID | The provided username is not valid |
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