Google Image By URL curl

<?

$GOOGLE_URL = "http://www.google.com";
$GOOGLE_SBI_URL = "/searchbyimage?image_url=";
$IMAGE_URL = your_image_folder_url; // the folder where your images are
$IMAGE_URL_ENCODED = your_image_folder_url_percent_encoded; // change the dashes and dots to % things
$IMAGE_SUFFIX = $_GET['imgsfx']; // gets the image file name from the PHP call

// your browser info goes here. might be different. got mine from here: http://whatsmyuseragent.com/
$AGENT_ID = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.101 Safari/537.11";

$url .= $GOOGLE_URL;
$url .= $GOOGLE_SBI_URL;
$url .= $IMAGE_URL_ENCODED;
$url .= $IMAGE_SUFFIX;

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_USERAGENT, $AGENT_ID);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

$body = curl_exec($ch);
curl_close($ch);

// link matchstring gets all the image links
$linkmatchstring = "/imgres\?imgurl\=(.*?)(\&amp|\%3F)/";
// thumb match string gets the base64 byte data that it uses for thumbnails
$thumbmatchstring = "/'imgthumb1','data:image\/jpeg;base64,(.*?)'\)/";

// regex match on the curl text
preg_match_all($linkmatchstring, $body, $linkmatches);
preg_match_all($thumbmatchstring, $body, $thumbmatches);

// matches come in arrays
$linkoutput = $linkmatches[1][0];
$thumboutput = $thumbmatches[1][0];

$filename .= "gimgcurldump";
$filename .= $IMAGE_SUFFIX;
$filename .= ".html";

$f = fopen($filename,"w");

// makes a new html page
$htmloutput .= "<html>\n<head>\n</head>\n<body>\n<img src=\"";
$htmloutput .= $IMAGE_URL;
$htmloutput .= $IMAGE_SUFFIX;
$htmloutput .= "\"/>\n";
$htmloutput .= "<img src=\"";
$htmloutput .= $linkoutput;
$htmloutput .= "\"/>\n</body>\n</html>";
fwrite($f,$htmloutput);
fclose($f);

// This is where I was trying to get stuff back.
//HttpResponse::setData($file);
//HttpResponse::send();

echo($thumboutput);
//echo($file);

?>