A simple storage class inspired by the redis api on top of Sqlite.

$db = new RedisLite("PATH_TO_WRITABLE_FOLDER/mydb");

$db->set("mykey", 1);

$db->incr("mykey");

$db->get("mykey"); // 2

// Lists

db->rpush("mylist", "item1");
db->rpush("mylist", "item2");
$db->lpush("mylist", "item3");

$db->get("mylist");  // ["item3", "item1", "item2"]

// hashes

$db->hset("myhash", "myfield", 1);
$db->hmset("myhash", "myfield-1", "value-1", "myfield-2", "value-2");

$db->hkeys("myhash"); // ["myfield", "myfield-1", "myfield-2"]
$db->hvals("myhash"); // [1, "value-1", "value-2"]

$db->hget("myhash", "myfield"); // 1

$db->get("myhash"); // array("myfield"=>1, "myfield-1"=>"value-1", "myfield-2"=>"value-2")

set, get, exists, keys, del, type, incr, decr, 
llen, lpush, rpush, lset, lindex,
hset, hget, hgetall, hexists, hkeys, hvals, hlen, hincrby, hmset, hmget