<?php/** * 分布式的 memcache set 实现 *//** * 创建缓存实现memcache 添加分布式服务器  并设置权限 */function createCache() {    $arr = array(        array("host" => "127.0.0.1", "port" => 11211, "weight" => 20), //127.0.0.1:11211的权重是20%        array("host" => "127.0.0.1", "port" => 11212, "weight" => 80), //127.0.0.1:11212的权重是80%    );    $cache = new memcache();    foreach ($arr as $ele) {        //使用长连接，并且设置不同memcache服务器的权重，将memcache服务器添加到连接池        $cache->addServer($ele["host"], $ele["port"], true, $ele["weight"]);    }    return $cache;}header("content-type:text/html;charset=utf-8");$cache = createCache();for ($i = 0; $i < 10; $i++) {    //由于使用了分布式，所以这里不需要使用connect或者pconnect打开链接,
    //set方法会调用memcache的分布式缓存分配算法，按照权重将缓存项缓存到连接池的某个服务器    if ($cache->set($i, $i, 0, 3600)) {        echo "缓存成功,key:$i,value:$i";    } else {        echo "缓存失败";    }    echo "<br/>";}?>

<?php/** * 分布式的 memcache get 实现 */function createCache() {    $arr = array(        array("host" => "127.0.0.1", "port" => 11211, "weight" => 20),        array("host" => "127.0.0.1", "port" => 11212, "weight" => 80)    );    $cache = new memcache();    foreach ($arr as $ele) {        $cache->addServer($ele ["host"], $ele ["port"], true, $ele ["weight"], 1);    }    return $cache;}header(‘content-type:text/html;charset=utf-8‘);$cache = createCache();$val;for ($i = 0; $i < 10; $i ++) {    $val = $cache->get($i);    if (false === $val) {        echo "缓存获取失败";    } else {        echo "缓存获取成功:,key:$val,value:$val";    }    echo "<br/>";}$cache->close();?>