I use BotrAPI v1.4 to get videos from my JWP account with next call:
$response = $botr_api->call("/videos/list",array('text'=>($keyword),'total_limit'=>$totalLimit));
But how can I receive my playlists(channels) from my account? There are no PHP examples of it.
You can use /channels/list {search: 'keyword'}
to retrieve channels based on keyword search. There's documentation available at: https://developer.jwplayer.com/jw-platform/reference/v1/methods/channels/list.html