src/IronMQ.php
public function deleteQueue($queue_name)
    {
        $this->setJsonHeaders();
        $queue = rawurlencode($queue_name);
        $url = "projects/{$this->project_id}/queues/$queue";
        return self::json_decode($this->apiCall(self::DELETE, $url));
    }
public function deleteQueue($queue_name)
    {
        $this->setJsonHeaders();
        $queue = rawurlencode($queue_name);
        $url = "projects/{$this->project_id}/queues/$queue";
        return self::json_decode($this->apiCall(self::DELETE, $url));
    }
Delete a Message Queue
This call deletes a message queue and all its messages.

@param string $queue_name
@return mixed