Server Example

<?php
// Indefinite execution
set_time_limit (0);
// IP and port
$strIp = '';
$intPort = 9000; // 9000 is a good port

// Create a TCP Stream socket
$resSock = socket_create(AF_INET, SOCK_STREAM, 0);
// Bind the socket to an address/port
socket_bind($resSock, $strIp, $intPort) or die('Could not bind to address');
// Start listening for connections
socket_listen($resSock);
while(true) {
    // Accept incoming requests
    $resClient = socket_accept($resSock);
    // Read input from client
    $strMessage = socket_read($resClient, 1024);

    // Display output
    echo $strMessage;
}
// Close the client (child) socket
socket_close($resClient);

// Close the master sockets
socket_close($resSock);
?>