/**
* Reads the specified item from the cache or generate it.
* @param mixed key
* @param callable
* @return mixed|NULL
*/
public function load($key, $fallback = NULL)
{
$data = $this->storage->read($this->generateKey($key));
if ($data === NULL && $fallback) {
return $this->save($key, new Callback($fallback));
}
return $data;
}
/**
* Reads the specified item from the cache or generate it.
* @param mixed key
* @param callable
* @return mixed|NULL
*/
public function load($key, $fallback = NULL)
{
$data = $this->storage->read($this->namespace . md5(is_scalar($key) ? $key : serialize($key)));
if ($data === NULL && $fallback) {
return $this->save($key, callback($fallback));
}
return $data;
}
/**
* Exists item in cache? (\ArrayAccess implementation).
* @param string key
* @return bool
* @throws InvalidArgumentException
*/
public function offsetExists($key)
{
if (!is_string($key)) {
throw new InvalidArgumentException("Cache key name must be string, " . gettype($key) . " given.");
}
$this->key = $key;
$this->data = $this->storage->read($this->namespace . $key);
return $this->data !== NULL;
}
/**
* Exists item in cache? (\ArrayAccess implementation).
* @param string key
* @return bool
* @throws InvalidArgumentException
*/
public function offsetExists($key)
{
if (!is_string($key) && !is_int($key)) {
throw new InvalidArgumentException("Cache key name must be string or integer, " . gettype($key) . " given.");
}
$this->key = (string) $key;
$this->data = $this->storage->read($this->namespace . self::NAMESPACE_SEPARATOR . $key);
return $this->data !== NULL;
}
