PHP shared cache Yac replaces APCU memcache!

$/path/to/phpize
$./configure --with-php-config=/path/to/php-config
$make && make install

yac.enable = 1
yac.keys_memory_size = 4M ; 4M can get 30K key slots, 32M can get 100K key slots
yac.values_memory_size = 64M
yac.compress_threshold = -1
yac.enable_cli = 0 ; 是否使用cli启用yac，默认为0
yac.serializer = php ; yac2.2.0以来，yac使用的特定seralizer json(-- enable-json) 、msgpack(-- enable-msgpack) 或igbinary(-- enable-igbinary)

YAC_VERSION
YAC_MAX_KEY_LEN = 48 ; if your key is longer than this, maybe you can use md5 result as the key
YAC_MAX_VALUE_RAW_LEN = 64M
YAC_MAX_VALUE_COMPRESSED_LEN = 1M
YAC_SERIALIZER_PHP = 0   ; since yac-2.2.0
YAC_SERIALIZER_JSON = 1  ; since yac-2.2.0
YAC_SERIALIZER_MSGPACK = 2 ; since yac-2.2.0
YAC_SERIALIZER_IGBINARY = 3 ; since yac-2.2.0
YAC_SERIALIZER  ; serializer according to yac.serializer, default is YAC_SERIALIZER_PHP

set([1,2,3,5,6]);
//获取缓存
$a = $cache->get();


//备注 1.由于yac的缓存是共享的，所以在多个项目中使用时，需要注意key的唯一性，否则会出现缓存覆盖的情况
//备注 2.由于cli在执行后会自动退出，所以在cli中使用时，需要注意缓存的有效期，当再次执行时候换存是拿不到的
//例如

//例
//step 1
set([1,2,3,5,6]);
//php step1.php //执行后会自动退出,缓存失效

get();
var_dump($arr);// 空
//php step2.php //执行事后上一个进程已经退出，所以缓存失效

Yac::__construct([string $prefix = ""])

   Yac::set($key, $value[, $ttl = 0])
   Yac::set(array $kvs[, $ttl = 0])

set("foo", "bar");
$yac->set(
    array(
        "dummy" => "foo",
        "dummy2" => "foo",
        )
    );
?>

while (!($yac->set("important", "value")));

 Yac::get(array|string $key[, &$cas = NULL])

set("foo", "bar");
$yac->set(
    array(
        "dummy" => "foo",
        "dummy2" => "foo",
        )
    );
$yac->get("dummy");
$yac->get(array("dummy", "dummy2"));
?>

Yac::delete(array|string $keys[, $delay=0])

Yac::flush()

Yac::info(void)

info());
  /* will return an array like:
  array(11) {
      ["memory_size"]=> int(541065216)
      ["slots_memory_size"]=> int(4194304)
      ["values_memory_size"]=> int(536870912)
      ["segment_size"]=> int(4194304)
      ["segment_num"]=> int(128)
      ["miss"]=> int(0)
      ["hits"]=> int(955)
      ["fails"]=> int(0)
      ["kicks"]=> int(0)
      ["slots_size"]=> int(32768)
      ["slots_used"]=> int(955)
  }
  */

isEnable = false;
            throw new RuntimeException('yac 扩展不存在！');
        }
        if (!$key) {
            throw new RuntimeException('key 不能为空！');
        }
        $this->key = md5($key);
    }
    /**
     *
     * 获取共享内存块的值。
     */
    public function get()
    {
        if ($this->isEnable) {
            return (new Yac('db_'))->get($this->key);
        }
        throw new RuntimeException('yac is not enable ,skip getCache');
    }
    /**
     *
     * 设置共享内存块的值。
     */
    public function set($var): bool
    {
        if ($this->isEnable) {
            return (new Yac('db_'))->set($this->key, $var, 3600);
        }
        throw new RuntimeException('yac is not enable ,skip setCache');
    }
    /**
     *
     * 删除共享内存块的值。
     */
    public function del(): bool
    {
        if ($this->isEnable) {
            return (new Yac('db_'))->delete($this->key);
        }
        throw new RuntimeException('yac is not enable ,skip delCache');
    }
    /**
     *
     * 获取共享内存块的信息。
     */
    public function info(): array
    {
        if ($this->isEnable) {
            return (new Yac('db_'))->info();
        }
        throw new RuntimeException('yac is not enable ,skip info');
    }
    /**
     *
     * 清空共享内存块的值。
     */
    public function flush(): bool
    {
        if ($this->isEnable) {
            return (new Yac)->flush();
        }
        throw new RuntimeException('yac is not enable ,skip flush');
    }
}