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- <?php namespace Laravel\Cache\Drivers;
- class File extends Driver {
- /**
- * The path to which the cache files should be written.
- *
- * @var string
- */
- protected $path;
- /**
- * Create a new File cache driver instance.
- *
- * @param string $path
- * @return void
- */
- public function __construct($path)
- {
- $this->path = $path;
- }
- /**
- * Determine if an item exists in the cache.
- *
- * @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 ( ! file_exists($this->path.$key)) return null;
- // File based caches store have the expiration timestamp stored in
- // UNIX format prepended to their contents. We'll compare the
- // timestamp to the current time when we read the file.
- if (time() >= substr($cache = file_get_contents($this->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.
- *
- * <code>
- * // Put an item in the cache for 15 minutes
- * Cache::put('name', 'Taylor', 15);
- * </code>
- *
- * @param string $key
- * @param mixed $value
- * @param int $minutes
- * @return void
- */
- public function put($key, $value, $minutes)
- {
- if ($minutes <= 0) return;
- $value = $this->expiration($minutes).serialize($value);
- file_put_contents($this->path.$key, $value, LOCK_EX);
- }
- /**
- * Write an item to the cache for five years.
- *
- * @param string $key
- * @param mixed $value
- * @return void
- */
- public function forever($key, $value)
- {
- return $this->put($key, $value, 2628000);
- }
- /**
- * Delete an item from the cache.
- *
- * @param string $key
- * @return void
- */
- public function forget($key)
- {
- if (file_exists($this->path.$key)) @unlink($this->path.$key);
- }
- /**
- * Flush the entire cache.
- *
- * @return void
- */
- public function flush()
- {
- array_map('unlink', glob($this->path.'*'));
- }
- }
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