$data = $_POST['imagebase64'];

        list($type, $data) = explode(';', $data);
        list(, $data) = explode(',', $data);


        $data = base64_decode($data);

        $mainFolder = $_SERVER['DOCUMENT_ROOT'];

        $subfolder='/users/images/you/';
        $timeMilliseconds = round(microtime(true) * 1000);

        $filename = $subfolder.'image64' . $timeMilliseconds . '.png';


        $fileroot=$mainFolder.$filename;

        file_put_contents($fileroot, $data);