How to Create a Socket and listen in php

This article mainly introduces how to create and listen to sockets in php, and analyzes Socket creation, connection, initialization, and Listening Techniques in details in the form of instances. For more information, see

This article mainly introduces how to create and listen to sockets in php, and analyzes Socket creation, connection, initialization, and Listening Techniques in details in the form of instances. For more information, see

This article describes how to create and listen to sockets in php. Share it with you for your reference. The details are as follows:

Here we provide an instance of socket-related functions in php, such as creating a Socket, accepting a socket connection, writing a Socket, and initializing a connection. The specific instance code is as follows:

The Code is as follows:

$ Ip = "127.0.0.1"; // define an ip address
$ Port = 1000; // define the port
$ Socket = socket_create (af_inet, sock_stream, sol_tcp); // create a socket
$ Bind = socket_bind ($ socket, $ ip, $ prot); // bind a socket
$ Listen = socket_listen ($ socket); // listen to socket
$ Msg = socket_accept ($ socket); // accept a socket connection
$ Welcome = "welcome to the php service/n"; // define a string
Socket_write ($ msg, $ welcome, strlen ($ welcome); // write a socket
Socket_close ($ socket); // close the socket

*/

$ Ip = "127.0.0.1"; // define an ip address
$ Port = 1000; // define the port
$ Socket = socket_create (af_inet, sock_stream, sol_tcp); // create a socket
Socket_clear_error ($ socket); // clear the socket error message
Socket_close ($ socket); // close the socket

/*

*/
$ Sockets = array (); // defines an array
/* Create a socket and store it in the array */
If (! Socket_create_pair (af_unix, sock_stream, 0, $ sockets) // If the socket is not successfully created
{
Echo socket_strerror (socket_last_error (); // output the error message
}
/* Use the created socket to send and receive messages */
If (! Socket_write ($ sockets [0], "abcdef123n", strlen ("abcdef123n") // If the socket write fails to be executed
{
Cho socket_strerror (socket_last_error (); // output the error message
}
If (! $ Data = socket_read ($ sockets [1], strlen ("abcdef123n"), php_binary_read) // If the read information fails
{
Echo socket_strerror (socket_last_error (); // output the error message
}
Var_dump ($ data); // output socket data information
/* Disable socket */
Socket_close ($ sockets [0]); // close socket1
Socket_close ($ sockets [1]); // close socket2

/*
*/

$ Ip = "127.0.0.1"; // define an ip address
$ Port = 1000; // define the port
$ Socket = socket_create (af_inet, sock_stream, sol_tcp); // create a socket
Socket_set_nonblock ($ socket); // you can specify the lock status.
Socket_connect ($ socket, $ ip, $ port); // initialize the connection
Socket_set_block ($ sock); // lock the socket
Switch (socket_select ($ r = array ($ socket), $ w = array ($ socket), $ f = array ($ socket), 5 ))
{
Case 2:
Echo "connection rejected! N ";
Break;
Case 1:
Echo "successfully connected n ";
Break;
Case 0:
Echo "connection timeout n ";
Break;
}

/*

*/

/* The following code defines a socket listener class */
Class socketlistener extends socket
{
Function _ construct ($ port = null) // defines the _ construct Method
{
$ This-> stream = @ socket_create_listen ($ port? $ Port: port); // open the port to accept the connection
}
Function isactive () // defines the isactive method.
{
If ($ this-> stream) // if there is a connection
{
Return true; // returns the true value.
}
Else // No connection
{
Return false; // returns a false value.
}
}
}

I hope this article will help you with php programming.

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