RedRat | PHP Example Client Code

The few lines of code below open a socket to the hub and uses that to send commands to the irNetBox (with IP address 192.168.1.40):

<?php
function sendMessage($sock, $msg) 
{
    if ( !socket_send($sock , $msg , strlen($msg), 0 ) ) 
    {
        $errorcode = socket_last_error();
        $errormsg = socket_strerror($errorcode);
        die("Could not send message: $msg - [$errorcode] $errormsg" . PHP_EOL);
    }
    echo "Message sent: $msg"; 

    // Read return one byte at a time until message complete (haveEOM) 
    $ret = ""; 
    do 
    { 
        socket_recv($sock, $buf, 1, MSG_WAITALL);
        $errorcode = socket_last_error();
        if ($errorcode != 0) 
        {
            $errormsg = socket_strerror($errorcode);
            die("Could not receive data - [$errorcode] $errormsg" . PHP_EOL);
        }
        $ret = $ret.$buf;
    } 
    while ( !haveEOM($ret) ); 

    echo "Response received: " . PHP_EOL . $ret . PHP_EOL;
}

// Checks for the end of a message: 
// - Single line message - look for "\n" 
// - Multi-line message - it has an opening bracket '{' so look for '}' 
function haveEOM($msg)
{ 
    if ( (strpos($msg, "{") !== FALSE ) && ( strpos($msg, "}") === FALSE ) ) 
    { 
        return FALSE;
    }
    else if ( strpos($msg, "\n") === FALSE ) 
    { 
        return FALSE;
    } 
    return TRUE;
}

// RedRat irNetBox #1
$addr = 'localhost';    // localhost
$port = 40000;          // RedRatHub port
// Create a socket for IP version 4, TCP, IP Protocol
if (!($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) 
{ 
    $errorcode = socket_last_error(); 
    $errormsg = socket_strerror($errorcode); 
    die("Couldn't create TCP/IP socket: [$errorcode] $errormsg" . PHP_EOL);
}
echo "TCP/IP socket created" . PHP_EOL; 

//socket_set_option($sock, SOL_SOCKET, SO_RCVTIMEO, array("sec"=>5, "usec"=>0));

// Connect socket to irNetBox 
if(!socket_connect($sock , $addr , $port))
{
    $errorcode = socket_last_error();
    $errormsg = socket_strerror($errorcode);
    die("Could not connect to RedRatHub $addr:$port - [$errorcode] $errormsg" . PHP_EOL);
}
echo "Connection established to RedRatHub $addr:$port" . PHP_EOL;

// Send Signal Transmission to RedRatHub
sendMessage($sock, "ip=\"192.168.1.40\" dataset=\"Sky+\" signal=\"Channel+\" output=\"1:70\"\n");
sendMessage($sock, "hq=\"list redrats\"\n");
socket_close($sock);

?>
RedRat Hub PHP Example Client Code
