Php/docs/function.socket-create-listen

• PHP Manual
• Socket 函数
• Opens a socket on port to accept connections

socket_create_listen

(PHP 4 >= 4.1.0, PHP 5, PHP 7)

socket_create_listen — Opens a socket on port to accept connections

说明

socket_create_listen ( int $port [, int $backlog = 128 ] ) : resource

socket_create_listen() creates a new socket resource of type AF_INET listening on all local interfaces on the given port waiting for new connections.

This function is meant to ease the task of creating a new socket which only listens to accept new connections.

参数

port

The port on which to listen on all interfaces.

backlog

The backlog parameter defines the maximum length the queue of pending connections may grow to. SOMAXCONN may be passed as backlog parameter, see socket_listen() for more information.

返回值

socket_create_listen() returns a new socket resource on success or false on error. The error code can be retrieved with socket_last_error(). This code may be passed to socket_strerror() to get a textual explanation of the error.

注释

Note:

If you want to create a socket which only listens on a certain interface you need to use socket_create(), socket_bind() and socket_listen().

参见

• socket_create() - 创建一个套接字（通讯节点）
• socket_create_pair() - Creates a pair of indistinguishable sockets and stores them in an array
• socket_bind() - 给套接字绑定名字
• socket_listen() - Listens for a connection on a socket
• socket_last_error() - Returns the last error on the socket
• socket_strerror() - Return a string describing a socket error