This method no longer returns 'weight' in v2.1.0: https://github.com/php-memcached-dev/php-memcached/pull/56(PECL memcached >= 0.1.0)
Memcached::getServerList — 获取服务器池中的服务器列表
此函数没有参数。
服务器池中所有服务器列表.
示例 #1 Memcached::getServerList() 示例
<?php
$m = new Memcached();
$m->addServers(array(
    array('mem1.domain.com', 11211, 20),
    array('mem2.domain.com', 11311, 80),
));
var_dump($m->getServerList());
?>以上示例会输出:
array(2) {
  [0]=>
  array(3) {
    ["host"]=>
    string(15) "mem1.domain.com"
    ["port"]=>
    int(11211)
    ["weight"]=>
    int(20)
  }
  [1]=>
  array(3) {
    ["host"]=>
    string(15) "mem2.domain.com"
    ["port"]=>
    int(11311)
    ["weight"]=>
    int(80)
  }
}
This method no longer returns 'weight' in v2.1.0: https://github.com/php-memcached-dev/php-memcached/pull/56