src/IronMQ.php
public function removeSubscribers($queue_name, $subscriber_hash)
    {
        $this->setJsonHeaders();
        $queue = rawurlencode($queue_name);
        $url = "projects/{$this->project_id}/queues/$queue/subscribers";
        $options = array(
            'subscribers' => $subscriber_hash,
        );
        return self::json_decode($this->apiCall(self::DELETE, $url, $options));
    }
public function removeSubscribers($queue_name, $subscriber_hash)
    {
        $this->setJsonHeaders();
        $queue = rawurlencode($queue_name);
        $url = "projects/{$this->project_id}/queues/$queue/subscribers";
        $options = array(
            'subscribers' => $subscriber_hash,
        );
        return self::json_decode($this->apiCall(self::DELETE, $url, $options));
    }
Remove Subscribers from a Queue

Example:
<code>
$ironmq->removeSubscriber("test_queue", array("url" => "http://example.com"));
</code>

@param string $queue_name
@param array $subscriber_hash Subscriber. keys:
- "url" Subscriber url
@return mixed