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/* {{{ Memcached::__construct([string persistent_id[, callback on_new[, string connection_str]]]))

Creates a Memcached object, optionally using persistent memcache connection */

static PHP_METHOD(Memcached, __construct)

{

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When using persistent connections, it is important to not re-add servers.

This is what you do not want to do:

    $mc = new Memcached('mc');
    $mc->setOption(Memcached::OPT_LIBKETAMA_COMPATIBLE, true);
    $mc->addServers(array(
      array('mc1.example.com',11211),
      array('mc2.example.com',11211),
    ));

Every time the page is loaded those servers will be appended to the list resulting in many simultaneous open connections to the same server. The addServer/addServers functions to not check for existing references to the specified servers.

A better approach is something like:

    $mc = new Memcached('mc');
    $mc->setOption(Memcached::OPT_LIBKETAMA_COMPATIBLE, true);
    if (!count($mc->getServerList())) {
      $mc->addServers(array(
        array('mc1.example.com',11211),
        array('mc2.example.com',11211),
      ));
    }  

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