stream_socket_server

(PHP 5, PHP 7)

stream_socket_server — Create an Internet or Unix domain server socket

说锟斤拷

stream_socket_server ( string $local_socket [, int &$errno [, string &$errstr [, int $flags = STREAM_SERVER_BIND | STREAM_SERVER_LISTEN [, resource $context ]]]] ) : resource

Creates a stream or datagram socket on the specified local_socket.

This function only creates a socket, to begin accepting connections use stream_socket_accept().

锟斤拷锟斤拷

local_socket

The type of socket created is determined by the transport specified using standard URL formatting: transport://target.

For Internet Domain sockets (AF_INET) such as TCP and UDP, the target portion of the remote_socket parameter should consist of a hostname or IP address followed by a colon and a port number. For Unix domain sockets, the target portion should point to the socket file on the filesystem.

Depending on the environment, Unix domain sockets may not be available. A list of available transports can be retrieved using stream_get_transports(). See 锟斤拷支锟街碉拷锟阶斤拷锟街达拷锟斤拷锟斤拷锟斤拷Socket Transports锟斤拷锟叫憋拷 for a list of bulitin transports.

errno

If the optional errno and errstr arguments are present they will be set to indicate the actual system level error that occurred in the system-level socket(), bind(), and listen() calls. If the value returned in errno is 0 and the function returned FALSE, it is an indication that the error occurred before the bind() call. This is most likely due to a problem initializing the socket. Note that the errno and errstr arguments will always be passed by reference.

errstr

See errno description.

flags

A bitmask field which may be set to any combination of socket creation flags.

Note:

For UDP sockets, you must use STREAM_SERVER_BIND as the flags parameter.

context

锟斤拷锟斤拷值

Returns the created stream, or FALSE on error.

锟斤拷锟斤拷

Example #1 Using TCP server sockets

<?php
$socket = stream_socket_server("tcp://0.0.0.0:8000", $errno, $errstr);
if (!$socket) {
  echo "$errstr ($errno)<br />\n";
} else {
  while ($conn = stream_socket_accept($socket)) {
    fwrite($conn, 'The local time is ' . date('n/j/Y g:i a') . "\n");
    fclose($conn);
  }
  fclose($socket);
}
?>

The example below shows how to act as a time server which can respond to time queries as shown in an example on stream_socket_client().

Note: Most systems require root access to create a server socket on a port below 1024.

Example #2 Using UDP server sockets

<?php
$socket = stream_socket_server("udp://127.0.0.1:1113", $errno, $errstr, STREAM_SERVER_BIND);
if (!$socket) {
    die("$errstr ($errno)");
}

do {
    $pkt = stream_socket_recvfrom($socket, 1, 0, $peer);
    echo "$peer\n";
    stream_socket_sendto($socket, date("D M j H:i:s Y\r\n"), 0, $peer);
} while ($pkt !== false);

?>

注锟斤拷

Note: 锟斤拷指锟斤拷锟斤拷值锟酵碉拷 IPv6 锟斤拷址锟斤拷锟斤拷锟斤拷 fe80::1锟斤拷时锟斤拷锟斤拷锟矫凤拷锟斤拷锟脚斤拷 IP 围锟斤拷锟斤拷——锟斤拷锟界， tcp://[fe80::1]:80锟斤拷

锟轿硷拷

  • stream_socket_client() - Open Internet or Unix domain socket connection
  • stream_set_blocking() - 为锟斤拷源锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷模式
  • stream_set_timeout() - Set timeout period on a stream
  • fgets() - 锟斤拷锟侥硷拷指锟斤拷锟叫讹拷取一锟斤拷
  • fgetss() - 锟斤拷锟侥硷拷指锟斤拷锟叫讹拷取一锟叫诧拷锟斤拷锟剿碉拷 HTML 锟斤拷锟�
  • fwrite() - 写锟斤拷锟侥硷拷锟斤拷锟缴帮拷全锟斤拷锟节讹拷锟斤拷锟斤拷锟侥硷拷锟斤拷
  • fclose() - 锟截憋拷一锟斤拷锟窖打开碉拷锟侥硷拷指锟斤拷
  • feof() - 锟斤拷锟斤拷锟侥硷拷指锟斤拷锟角凤拷锟斤拷锟侥硷拷锟斤拷锟斤拷锟斤拷位锟斤拷
  • Curl extension