php socket server implementation

I have developed a PHP Socket Server in which I am receiving data from GSM Modules and storing it in MySQL. I want to make it more clever as soon as we get the data we send it to another server at the same time. For the second option I want user to give the host ip address and port to send data. I developed a user input page but I dont know how to configure it. This is my server code. I dont want to restart my server everytime when I change the Ip Address and port of the second host on which i want to send data.

<?php
    error_reporting(~E_NOTICE);
    set_time_limit(0);
    session_start();

    require ('manageData.php');
    require ('clientInfo.php');
    require ('dataCheck.php');
    require ('endsession.php');
    require ('sendhost.php');

    $address = "0.0.0.0";
    $port = 9000;
    $max_clients = 10;

    if (!($sock = socket_create(AF_INET, SOCK_STREAM, 0))) {
        $errorcode = socket_last_error();
        $errormsg = socket_strerror($errorcode);
        die("Couldn't create socket: [$errorcode] $errormsg \n");
    }
    // Bind the source address
    if (!socket_bind($sock, $address, $port)) {
        $errorcode = socket_last_error();
        $errormsg = socket_strerror($errorcode);
        die("Could not bind socket : [$errorcode] $errormsg \n");
    }
    if (!socket_listen($sock, 10)) {
        $errorcode = socket_last_error();
        $errormsg = socket_strerror($errorcode);
        die("Could not listen on socket : [$errorcode] $errormsg \n");
    }
    //array of client sockets
    $client_socks = array();
    //array of sockets to read
    $read = array();
    //start loop to listen for incoming connections and process existing connections
    while (true) {
        //prepare array of readable client sockets
        $read = array();
        //first socket is the master socket
        $read[0] = $sock;
        //now add the existing client sockets
        for ($i = 0;$i < $max_clients;$i++) {
            if ($client_socks[$i] != null) {
                $read[$i + 1] = $client_socks[$i];
            }
        }
        //now call select - blocking call
        if (socket_select($read, $write, $except, null) === false) {
            $errorcode = socket_last_error();
            $errormsg = socket_strerror($errorcode);
            die("Could not listen on socket : [$errorcode] $errormsg \n");
        }
        //if ready contains the master socket, then a new connection has come in
        if (in_array($sock, $read)) {
            for ($i = 0;$i < $max_clients;$i++) {
                if ($client_socks[$i] == null) {
                    $client_socks[$i] = socket_accept($sock);
                    if (socket_getpeername($client_socks[$i], $address, $port)) {
                        echo "$address \n";
                        if (strlen($address) > 0) writeToClientInfo("client.csv", $address);
                    }
                    socket_write($client_socks[$i], $message);
                    break;
                }
            }
        }
        //check each client if they send any data
        for ($i = 0;$i < $max_clients;$i++) {
            if (in_array($client_socks[$i], $read)) {
                $input = socket_read($client_socks[$i], 4096);
                if ($input == null) {
                    //zero length string meaning disconnected, remove and close the socket
                    unset($client_socks[$i]);
                    socket_close($client_socks[$i]);
                    writeToEndSession("client.csv", $address);
                }
                $n = trim($input);
                $handle = ',';
                if (strlen($n) > 0) {
                    if (strpos($n, $handle) !== false) {
                        writeToFile('GSM.csv', $n);
                        sendData($n);
                    } else if (strpos($n, $handle) === false || strpos($n, "/") !== false) {
                        writeToRaw('RAW.csv', $n);
                    }
                } else break;
                //send response to client
                socket_write($client_socks[$i], "Data Received \n");
            }
        }
    }
?>

<?php
function sendData($n) {
        date_default_timezone_set("Europe/London");
        $date = date('Y-m-d H:i:s');
        if (isset($_POST['submit'])) {
          $thost = $_GET['hostt'];
          $tport = $_GET['portt'];
        }

        $th = $thost;
        $tp = $tport;

        $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
        if ($socket === false) {
        echo "socket_create() failed: reason: " .     socket_strerror(socket_last_error()) . "\n";
        }

        $conn = socket_connect($socket, $th, $tp);
        if ($conn === false) {
            echo "socket_connect() failed.\nReason: ($conn) " . socket_strerror(socket_last_error($socket)) . "\n";
        }

        if($th !== 0) echo "Settings Saved Successfully";
        else echo "Error Saving the Settings";

        socket_write($socket, $n, strlen($n));
?>

<form action="sendhost.php" id="login-form" name="form1" method="post">
<br> Server IP:
<br>
<center>
  <input type="text" value="" class="form-control required" name="hostt" />
</center>
<br> Server Port:
<br>
<center>
  <input type="text" value="" class="form-control required" name="portt" />
<br>
</center>
<br>
<center>
<div class="group submit">
<label class="empty"></label>
<div><input type="submit" value="Save Details" action="sendhost.php"/></div>
</div>
</center>
</form>