php中memcache读取数据批量写入mysql

<?php
public function cldata() {
    $memcache_obj = new Memcache;
    $memcache_obj->connect('127.0.0.1', '11211');
    $all_items = $memcache_obj->getExtendedStats('items');
    foreach ($all_items as $option => $vall) {
        if (isset($all_items[$option]['items'])) {
            $items = $all_items[$option]['items'];
            foreach ($items as $number => $item) {
                $str = $memcache_obj->getExtendedStats('cachedump', $number, 0);
                $line = $str[$option];
                if (is_array($line) && count($line) > 0) {
                    foreach ($line as $key => $value) {
                        $keys[] = $key;
                    }
                }
            }
        }
    }
    dump(count($keys)); //获取到key
    if (count($keys) > 50) { //要写入的数据条数
        $end = 50;
    } else {
        $end = count($keys);
    }
    for ($i = 0; $i <= $end; $i++) {
        if (!strstr($keys[$i], 'datadb')) continue;
        $ksv = str_replace('datadb', '', $keys[$i]);
        /*$logdata = unserialize(S('login'.$ksv));//登录写入
        if(is_array($logdata)){
        $this->addsuidinlogin($logdata[0],$logdata[1],$logdata[2],1);
        }   */
        /*$sdata = unserialize(S('regadd'.$ksv));//注册写入
        if(is_array($sdata)){
        $this->baiduad($sdata[0],$sdata[1],$sdata[2],$sdata[3],$sdata[4],1);
        }
        */
        $regdata = unserialize(S('datadb' . $ksv));
        $ress[] = $regdata; //开源代码phprm.com
        S('datadb' . $ksv, null);
    }
    $addb = M()->db(66, C('DB_WEB_AD')); //批量写入 addall
    $addb->table('mj_ad_count')->addall($ress);
    echo M()->getLastSql();
}