No cache version.

Caching disabled. Default setting for this page:enabled (code LNG204)
If the display is too slow, you can disable the user mode to view the cached version.

Rechercher une fonction PHP

Socket context options

Contents

Socket context options — Socket context option listing

Description

Socket context options are available for all wrappers that work over sockets, like tcp, http and ftp.

PHP: Socket context options - Manual Home of Manuel PHP  Contents Haut

Options

bindto

Used to specify the IP address (either IPv4 or IPv6) and/or the port number that PHP will use to access the network. The syntax is ip:port for IPv4 addresses, and [ip]:port for IPv6 addresses. Setting the IP or the port to 0 will let the system choose the IP and/or port.

Note:

As FTP creates two socket connections during normal operation, the port number cannot be specified using this option.

backlog

Used to limit the number of outstanding connections in the socket's listen queue.

Note:

This is only applicable to stream_socket_server().

ipv6_v6only

Overrides the OS default regarding mapping IPv4 into IPv6.

Note:

This is important in particular when trying to listen on IPv4 addresses separately while there exists a binding on [::].

This is only applicable to stream_socket_server().

so_reuseport

Allows multiple bindings to a same ip:port pair, even from separate processes.

Note:

This is only applicable to stream_socket_server().

so_broadcast

Enables sending and receiving data to/from broadcast addresses.

Note:

This is only applicable to stream_socket_server().

tcp_nodelay

Setting this option to TRUE will set SOL_TCP,NO_DELAY=1 appropriately, thus disabling the TCP Nagle algorithm.

PHP: Socket context options - Manual Home of Manuel PHP  Contents Haut

Changelog

Version Description
7.1.0 Added tcp_nodelay.
7.0.1 Added ipv6_v6only.
7.0.0 Added so_broadcast.
7.0.0 Added so_reuseport.
5.3.3 Added backlog.
5.1.0 Added bindto.

PHP: Socket context options - Manual Home of Manuel PHP  Contents Haut

Examples

Example #1 Basic bindto usage example

<?php
// connect to the internet using the '192.168.0.100' IP
$opts = array(
    'socket' => array(
        'bindto' => '192.168.0.100:0',
    ),
);


// connect to the internet using the '192.168.0.100' IP and port '7000'
$opts = array(
    'socket' => array(
        'bindto' => '192.168.0.100:7000',
    ),
);


// connect to the internet using the '2001:db8::1' IPv6 address
// and port '7000'
$opts = array(
    'socket' => array(
        'bindto' => '[2001:db8::1]:7000',
    ),
);


// connect to the internet using port '7000'
$opts = array(
    'socket' => array(
        'bindto' => '0:7000',
    ),
);


// create the context...
$context = stream_context_create($opts);

// ...and use it to fetch the data
echo file_get_contents('http://www.example.com', false, $context);

?>

Find a PHP function

English translation

You have asked to visit this site in English. For now, only the interface is translated, but not all the content yet.

If you want to help me in translations, your contribution is welcome. All you need to do is register on the site, and send me a message asking me to add you to the group of translators, which will give you the opportunity to translate the pages you want. A link at the bottom of each translated page indicates that you are the translator, and has a link to your profile.

Thank you in advance.

Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-context.socket.html

The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.

References

  1. View the html document Language of the document:fr Manuel PHP : http://php.net

These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.

Contents Haut