PHP memcache - 检查池中是否有服务器可用？

Question

我有以下代码：

$cluster['local'] = array('host' => '192.168.1.1', 'port' => '11211', 'weight' => 50); 
$cluster['local2'] = array('host' => '192.168.1.2', 'port' => '11211', 'weight' => 50); 

$this->memcache = new Memcache; 

foreach ($this->cluster() as $cluster) { 
    $this->memcache->addServer($cluster['host'], $cluster['port'], $this->persistent, $cluster['weight'], 10, 10, TRUE , 'failure'); 
} 

我想提出来检查，如果在我的memcache池中的任何我的服务器的可用功能。这怎么能做到？

Answer 1

您可以通过使用Memcache::getServerStatus对服务器的状态检查。

Answer 2

使用fsockopen()：

$timeout = 1; 
$fp = fsockopen('192.168.1.1', 11211, $errno, $errstr, $timeout); 

if (is_resource($fp)) 
{ 
    // connection to 192.168.1.1:11211 successful 
    fclose($fp); 
} 

else 
{ 
    // failed to connect to 192.168.1.1:11211 within $timeout second(s). 
}