>/commands"; $data = array( 'api_key' => 'TALKBACK API KEY', 'command_string' => $r . $g . $b, ); $result = post_request($url, $data); $postedColor = $_POST['selectedColor']; } } } //now connect to Thingspeak to get the current active color $url = "http://api.thingspeak.com/channels/<>/fields/1/last?api_key=<>"; //only gets field 1 (Julia)data $opts = array( 'http'=>array( 'method'=>"GET" ) ); $context = stream_context_create($opts); $currentColorRGB = file_get_contents($url, false, $context); // Open the file using the HTTP headers set above if (strlen($currentColorRGB) == 14) { //Should be 8, but I think there are still line feeds in the data that change the length $r = substr($currentColorRGB,0,3); $g = substr($currentColorRGB,3,3); $b = substr($currentColorRGB,6,3); $r = str_pad(dechex($r), 2, '0', STR_PAD_LEFT); //if zero, dechex returns only zero without second digit $g = str_pad(dechex($g), 2, '0', STR_PAD_LEFT); $b = str_pad(dechex($b), 2, '0', STR_PAD_LEFT); $currentColor = "#" . $r . $g . $b; } else { $currentColor = "#000000"; } // from https://stackoverflow.com/questions/21179862/fsockopen-post-and-get-php function post_request($url, $data, $referer='') { // Convert the data array into URL Parameters like a=b&foo=bar etc. $data = http_build_query($data); // parse the given URL $url = parse_url($url); if ($url['scheme'] != 'http') { die('Error: Only HTTP request are supported !'); } // extract host and path: $host = $url['host']; $path = $url['path']; // open a socket connection on port 80 - timeout: 30 sec $fp = fsockopen($host, 80, $errno, $errstr, 30); if ($fp){ // send the request headers: fputs($fp, "POST $path HTTP/1.1\r\n"); fputs($fp, "Host: $host\r\n"); if ($referer != '') fputs($fp, "Referer: $referer\r\n"); fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n"); fputs($fp, "Content-length: ". strlen($data) ."\r\n"); fputs($fp, "Connection: close\r\n\r\n"); fputs($fp, $data); $result = ''; while(!feof($fp)) { // receive the results of the request $result .= fgets($fp, 128); } } else { return array( 'status' => 'err', 'error' => "$errstr ($errno)" ); } // close the socket connection: fclose($fp); // split the result header from the content $result = explode("\r\n\r\n", $result, 2); $header = isset($result[0]) ? $result[0] : ''; $content = isset($result[1]) ? $result[1] : ''; // return as structured array: return array( 'status' => 'ok', 'header' => $header, 'content' => $content ); } ?> Control Julia's Color
Send Julia a color:

Background color is current color.
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