/**
* Retrieves the specified item from the cache or NULL if the key is not found (\ArrayAccess implementation).
* @param mixed key
* @return mixed|NULL
* @throws \InvalidArgumentException
*/
public function offsetGet($key)
{
$key = is_scalar($key) ? (string) $key : serialize($key);
if ($this->key === $key) {
return $this->data;
}
$this->key = $key;
$this->data = $this->storage->read($this->namespace . md5($key));
return $this->data;
}
/**
* Retrieves the specified item from the cache or NULL if the key is not found (\ArrayAccess implementation).
* @param string key
* @return mixed|NULL
* @throws \InvalidArgumentException
*/
public function offsetGet($key)
{
if (!is_string($key) && !is_int($key)) {
throw new \InvalidArgumentException("Cache key name must be string or integer, " . gettype($key) . " given.");
}
$key = (string) $key;
if ($this->key === $key) {
return $this->data;
}
$this->key = $key;
$this->data = $this->storage->read($this->namespace . self::NAMESPACE_SEPARATOR . $key);
return $this->data;
}