//如果没有账户密码，就注释掉
/*if ($Redis->auth($user . ":" . $pwd) == false) {
die($Redis->getLastError());
}*/
file_put_contents('./redis.json', '');
$it = NULL;
/* Initialize our iterator to NULL */
$Redis->setOption(Redis::OPT_SCAN, Redis::SCAN_RETRY);
/* retry when we get no keys back */
while ($keys = $Redis->scan($it)) {
$out = '';
foreach ($keys as $key) {
//echo $Redis->type($key),"\n";
$arr = array();
$type = $Redis->type($key);
$expire = $Redis->ttl($key);
switch ($type) {
case $Redis::REDIS_STRING:
//echo "string\n";
$arr['expire'] = $expire;
$arr['type'] = $type;
$arr['key'] = $key;
$arr['val'] = $Redis->get($key);
break;
case $Redis::REDIS_HASH:
//echo "hash\n";
$arr['expire'] = $expire;
$arr['type'] = $type;
$arr['key'] = $key;
$arr['val'] = $Redis->hGetAll($key);
break;
