| Warning |
This function is EXPERIMENTAL. That means, that the behaviour of this function, this function name, in concreto ANYTHING documented here can change in a future release of PHP WITHOUT NOTICE. Be warned, and use this function at your own risk. |
After the socket socket has been created using socket() and bound to a name with bind(), it may be told to listen for incoming connections on socket. A maximum of backlog incoming connections will be queued for processing.
listen() is applicable only to sockets with type SOCK_STREAM or SOCK_SEQPACKET.
Returns zero on success, or a negative error code on failure. This code may be passed to strerror() to get a textual explanation of the error.
See also accept_connect(), bind(), connect(), socket(), socket_get_status(), and strerror().