Sockets

Introduction

The socket extension implements a low-level interface to the socket communication functions based on the popular BSD sockets, providing the possibility to act as a socket server as well as a client.

For a more generic client-side socket interface, see stream_socket_client(), stream_socket_server(), fsockopen(), and pfsockopen().

When using these functions, it is important to remember that while many of them have identical names to their C counterparts, they often have different declarations. Please be sure to read the descriptions to avoid confusion.

Those unfamiliar with socket programming can find a lot of useful material in the appropriate Unix man pages, and there is a great deal of tutorial information on socket programming in C on the web, much of which can be applied, with slight modifications, to socket programming in PHP. The » Unix Socket FAQ might be a good start.

Installing/Configuring
- Installation
- Resource Types
Predefined Constants
Examples
Socket Errors
Socket Functions
- socket_accept — Accepts a connection on a socket
- socket_addrinfo_bind — Create and bind to a socket from a given addrinfo
- socket_addrinfo_connect — Create and connect to a socket from a given addrinfo
- socket_addrinfo_explain — Get information about addrinfo
- socket_addrinfo_lookup — Get array with contents of getaddrinfo about the given hostname
- socket_atmark — Determines whether socket is at out-of-band mark
- socket_bind — Binds a name to a socket
- socket_clear_error — Clears the error on the socket or the last error code
- socket_close — Closes a Socket instance
- socket_cmsg_space — Calculate message buffer size
- socket_connect — Initiates a connection on a socket
- socket_create — Create a socket (endpoint for communication)
- socket_create_listen — Opens a socket on port to accept connections
- socket_create_pair — Creates a pair of indistinguishable sockets and stores them in an array
- socket_export_stream — Export a socket into a stream that encapsulates a socket
- socket_get_option — Gets socket options for the socket
- socket_getopt — Alias of socket_get_option
- socket_getpeername — Queries the remote side of the given socket
- socket_getsockname — Queries the local side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type
- socket_import_stream — Import a stream
- socket_last_error — Returns the last error on the socket
- socket_listen — Listens for a connection on a socket
- socket_read — Reads a maximum of length bytes from a socket
- socket_recv — Receives data from a connected socket
- socket_recvfrom — Receives data from a socket whether or not it is connection-oriented
- socket_recvmsg — Read a message
- socket_select — Runs the select() system call on the given arrays of sockets with a specified timeout
- socket_send — Sends data to a connected socket
- socket_sendmsg — Send a message
- socket_sendto — Sends a message to a socket, whether it is connected or not
- socket_set_block — Sets blocking mode on a socket
- socket_set_nonblock — Sets nonblocking mode for file descriptor fd
- socket_set_option — Sets socket options for the socket
- socket_setopt — Alias of socket_set_option
- socket_shutdown — Shuts down a socket for receiving, sending, or both
- socket_strerror — Return a string describing a socket error
- socket_write — Write to a socket
- socket_wsaprotocol_info_export — Exports the WSAPROTOCOL_INFO Structure
- socket_wsaprotocol_info_import — Imports a Socket from another Process
- socket_wsaprotocol_info_release — Releases an exported WSAPROTOCOL_INFO Structure
Socket — The Socket class
AddressInfo — The AddressInfo class