sendChunk -> how it works?

Hi. What it is $payload in sendChunk function?
Maybe anyone know about this

The compressed/deflated buffer of the chunk to be sent in a FullChunkDataPacket.

How i can compress buffer of the chunk?

$payload is already encoded. You can decode it by zlib_decode()

It's necessarily?

What is necessary you mean? The $payload is something deflated, and you need to inflate it so that you can see the contents inside or modify them.

Hm. Created this, but didn't works

PHP:

$level = $entity->getLevel();
$payload = zlib_decode($level);
$player->sendChunk($x,$z,$payload);


zlib_decode() is to decode it. To pass to sendChunk, you should send the encoded payload.
Also, zlib_encode() should be passed with your ordered binary data rather than the Level object.