file = $file;
}
/**
* Determine if an item exists in the cache.
*
*
* // Determine if the "name" item exists in the cache
* $exists = Cache::driver()->has('name');
*
*
* @param string $key
* @return bool
*/
public function has($key)
{
return ( ! is_null($this->get($key)));
}
/**
* Retrieve an item from the cache driver.
*
* @param string $key
* @return mixed
*/
protected function retrieve($key)
{
if ( ! $this->file->exists(CACHE_PATH.$key)) return null;
if (time() >= substr($cache = $this->file->get(CACHE_PATH.$key), 0, 10))
{
return $this->forget($key);
}
return unserialize(substr($cache, 10));
}
/**
* Write an item to the cache for a given number of minutes.
*
*
* // Write the "name" item to the cache for 30 minutes
* Cache::driver()->put('name', 'Fred', 30);
*
*
* @param string $key
* @param mixed $value
* @param int $minutes
* @return void
*/
public function put($key, $value, $minutes)
{
$this->file->put(CACHE_PATH.$key, (time() + ($minutes * 60)).serialize($value));
}
/**
* Delete an item from the cache.
*
* @param string $key
* @return void
*/
public function forget($key)
{
$this->file->delete(CACHE_PATH.$key);
}
}