// Initialize probe (each service should have it's own probe).
$probe = new spamdetect\probes\BlogSpam;

// Initialize main detector class with probe object.
$detector = new spamdetect\Detector($probe);

// Create message object.
$message = new spamdetect\Message;
$message->
    setIP('1.1.1.1')->
    setName('IAmSpammer')->
    setBody('spam spam spam')->
    setOrigin('http://my.site.com/');

// Analyze message with given probe.
$result = $detector->analyze($message);

var_dump([
    // Spam flag.
    $result->isSpam(),
    // Reason (if any).
    $result->getReason(),
]);