Server Socket

server.php

<?php
// set some variables for configation
$host = "127.0.0.1";
$port = 25003;
// naver timeout! then set 0
set_time_limit(0);
// Create socket
$socket = socket_create(AF_INET, SOCK_STREAM, 0) or die("Could not create socket\n");
// Bind socket to port
$result = socket_bind($socket, $host, $port) or die("Could not bind to socket\n");
// Start listening for connections
$result = socket_listen($socket, 3) or die("Could not set up socket listener\n");
// Accept incoming connections
// spawn another socket to handle communication
$spawn = socket_accept($socket) or die("Could not accept incoming connection\n");
// Read client input
$input = socket_read($spawn, 1024) or die("Could not read input\n");
// Clean up input string
$input = trim($input);
echo "Client Message : ".$input;
// Reverse client input and send back
$output = strrev($input) . "\n";
socket_write($spawn, $output, strlen ($output)) or die("Could not write output\n");
// Close sockets
socket_close($spawn);
socket_close($socket);