Php socket Usage Details, phpsocket details

Php socket Usage Details, phpsocket details

The examples in this article detail the socket usage in php and share them with you for your reference. The usage is as follows:

1. Enable socket

Phpinfo (); check whether socket extension is enabled; otherwise, it is enabled in php. ini.

Ii. server code writing

Copy codeThe Code is as follows: <? Php
Error_reporting (E_ALL );
Set_time_limit (0 );
// Ob_implicit_flush ();

$ Address = '1970. 0.0.1 ';
$ Port = 10005;
// Create a port
If ($ sock = socket_create (AF_INET, SOCK_STREAM, SOL_TCP) = false ){
Echo "socket_create () failed: reason:". socket_strerror (socket_last_error (). "\ n ";
}

// Bind
If (socket_bind ($ sock, $ address, $ port) === false ){
Echo "socket_bind () failed: reason:". socket_strerror (socket_last_error ($ sock). "\ n ";
}

// Listen
If (socket_listen ($ sock, 5) === false ){
Echo "socket_bind () failed: reason:". socket_strerror (socket_last_error ($ sock). "\ n ";
}

Do {
// Get a link
If ($ msgsock = socket_accept ($ sock) === false ){
Echo "socket_accepty () failed: reason:". socket_strerror (socket_last_error ($ sock). "\ n ";
Break;
}
// Send welcome to the client
$ Msg = "<font color = 'red'> server send: welcome </font> <br/> ";
Socket_write ($ msgsock, $ msg, strlen ($ msg ));
Echo 'read client message \ n ';
$ Buf = socket_read ($ msgsock, 8192 );
$ Talkback = "received message: $ buf \ n ";
Echo $ talkback;
If (false === socket_write ($ msgsock, $ talkback, strlen ($ talkback ))){
Echo "socket_write () failed reason:". socket_strerror (socket_last_error ($ sock). "\ n ";
} Else {
Echo 'send success ';
}
Socket_close ($ msgsock );
} While (true );
// Close the socket
Socket_close ($ sock );
?>

The server must be executed in cli mode. It is possible that the php. ini file is loaded differently in cli mode.

The output is as follows:

At this time, there is a tem. text file in the zhoxh directory. View Configuration File (php. ini) Path => C: \ WINDOWS. It is not my php. ini file, which indicates that the php. ini file called is incorrect. In this case, specify the php. ini file command as follows:

Note that environment variables are configured when php can be executed directly.

Iii. Client

Copy codeThe Code is as follows: <? Php
// Error_reporting (E_ALL );
Echo "$ Service_port = 10005;
$ Address = '1970. 0.0.1 ';

$ Socket = socket_create (AF_INET, SOCK_STREAM, SOL_TCP );
If ($ socket = false ){
Echo "socket_create () failed: reason:". socket_strerror (socket_last_error (). "\ n ";
} Else {
Echo "OK. \ n ";
}

Echo "Attempting to connect to '$ address 'on port' $ service_port '...";
$ Result = socket_connect ($ socket, $ address, $ service_port );
If ($ result = false ){
Echo "socket_connect () failed. \ nReason: ($ result)". socket_strerror (socket_last_error ($ socket). "\ n ";
} Else {
Echo "OK \ n ";
}
$ In = "HEAD/http/1.1 \ r \ n ";
$ In. = "HOST: localhost \ r \ n ";
$ In. = "Connection: close \ r \ n ";
$ Out = "";
Echo "sending http head request ...";
Socket_write ($ socket, $ in, strlen ($ in ));
Echo "OK \ n ";

Echo "Reading response: \ n ";
While ($ out = socket_read ($ socket, 8192 )){
Echo $ out;
}
Echo "closeing socket ..";
Socket_close ($ socket );
Echo "OK. \ n ";
 
The execution result is as follows:
Server:

Client:

I hope this article will help you with PHP programming.

What is the main role of socket in php? In what ways?

It is generally used for interaction with the server, and data transmission is something like that!

Php socket programming is widely used in projects.

Sockets is not fully utilized in PHP. Today, you will see a server that can connect to the client and connect to the client using socket. The server sends detailed processing information to the client.
When you see the complete socket process, you will use it in future program development. This server is an HTTP server that allows you to connect to, and the client is a Web browser, which is a single client/server relationship.