PHP套接字/ TCP套接字

Question

Can someone explain what really happens when we create a socket like :

$socket = socket_create(AF_INET, SOCK_RAW, 1); and

socket_send($socket, $package, strLen($package), 0); .

What really happens at the Operating System Level (behind the scene) ?

Answer 1

The whole point of sockets is that you don't have to know about what is going on behind the scene. Hence the name -- Socket API. If you really must know then turn to the sources, let's say FreeBSD, because I'm not sure about Windows sources.