some confusions to singleton pattern in PHP
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by SpawnCxy
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Published on 2010-03-20T15:54:02Z
Indexed on
2010/03/20
16:01 UTC
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Hi all,
In my team I've been told to write resource class like this style:
class MemcacheService
{
private static $instance = null;
private function __construct()
{
}
public static function getInstance($fortest = false)
{
if (self::$instance == null)
{
self::$instance = new Memcached();
if ($fortest)
{
self::$instance->addServer(MEMTEST_HOST, MEMTEST_PORT);
}
else
{
self::$instance->addServer(MEM_HOST, MEM_PORT);
}
}
return self::$instance;
}
}
But I think in PHP resource handles will be released and initialized again every time after a request over. That means MemcacheService::getInstance()
is totally equal new Memcached()
which cannot be called singleton pattern at all. Please correct me if I'm wrong.
Regards
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