Redis and memcache list all keys

//Redis$redis=NewRedis ();$redis->connect ("host", "Port");$redis->select (0);//Redis defaults to 0-15 16 databases select 0 here$redis->dbsize ();//returns the number of keys$keys=$redis->keys ("*");//list all keys by using a wildcard characterVar_dump($keys);//memcache$servers=Array(Array("Host1", "Port1"),Array("Host2", "Port2"));$mem=NewMemcache ();$mem->addserver ("Host1", "Port1");$mem->addserver ("Host2", "Port2");$all _items=$memcache->getextendedstats (' Items ');$options=Array("Host1:port1", "Host2:port2");
foreach($servers  as $server){  $option=$server[0]. ":" .$server[1]; if(isset($all _items[$option[' Items '])) {      $items=$all _items[$option[' Items ']; foreach($items  as $number=$item) {        $str=$memcache->getextendedstats (' Cachedump ',$number, 0); $line=$str[$option]; if(Is_array($line) &&Count($line) > 0){          foreach($line  as $key=$value) {            $keys[] =$key; }        }      }    }}Var_dump($keys);

Redis and memcache list all keys