How does phpsocket receive multiple tcp packets consecutively?

How does phpsocket receive multiple tcp packets in a row? you can read 16 bytes at a time, 4 times for 64 bytes. This is only the content of a tcp packet. where are the four packages? Tcp waits for the subsequent data before transmission until the buffer is slow or the data ends, and then sends the php socket to receive multiple tcp packets consecutively.
How does php socket receive multiple tcp packets consecutively?

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You can read 16 bytes at a time, 4 times for 64 bytes. This is only the content of a tcp packet. where are the four packages?

Before transmission, tcp waits for the subsequent data to be sent until the buffer is slow or the data ends.