diff options
Diffstat (limited to 'system/libraries/Cache/Cache.php')
| -rw-r--r-- | system/libraries/Cache/Cache.php | 58 |
1 files changed, 32 insertions, 26 deletions
diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php index 4395cf411..7ec2380a5 100644 --- a/system/libraries/Cache/Cache.php +++ b/system/libraries/Cache/Cache.php @@ -41,7 +41,7 @@ class CI_Cache extends CI_Driver_Library { * * @var array */ - protected $valid_drivers = array( + protected $valid_drivers = array( 'cache_apc', 'cache_dummy', 'cache_file', @@ -67,16 +67,23 @@ class CI_Cache extends CI_Driver_Library { /** * Fallback driver * - * @param string + * @var string */ protected $_backup_driver = 'dummy'; /** + * Cache key prefix + * + * @var string + */ + public $key_prefix = ''; + + /** * Constructor * * Initialize class properties based on the configuration array. * - * @param array + * @param array $config = array() * @return void */ public function __construct($config = array()) @@ -96,12 +103,11 @@ class CI_Cache extends CI_Driver_Library { } } - if (isset($config['backup'])) + isset($config['key_prefix']) && $this->key_prefix = $config['key_prefix']; + + if (isset($config['backup']) && in_array('cache_'.$config['backup'], $this->valid_drivers)) { - if (in_array('cache_'.$config['backup'], $this->valid_drivers)) - { - $this->_backup_driver = $config['backup']; - } + $this->_backup_driver = $config['backup']; } // If the specified adapter isn't available, check the backup. @@ -129,12 +135,12 @@ class CI_Cache extends CI_Driver_Library { * Look for a value in the cache. If it exists, return the data * if not, return FALSE * - * @param string - * @return mixed value that is stored/FALSE on failure + * @param string $id + * @return mixed value matching $id or FALSE on failure */ public function get($id) { - return $this->{$this->_adapter}->get($id); + return $this->{$this->_adapter}->get($this->key_prefix.$id); } // ------------------------------------------------------------------------ @@ -142,14 +148,14 @@ class CI_Cache extends CI_Driver_Library { /** * Cache Save * - * @param string Unique Key - * @param mixed Data to store - * @param int Length of time (in seconds) to cache the data - * @return bool true on success/false on failure + * @param string $id Cache ID + * @param mixed $data Data to store + * @param int $ttl = 60 Cache TTL (in seconds) + * @return bool TRUE on success, FALSE on failure */ public function save($id, $data, $ttl = 60) { - return $this->{$this->_adapter}->save($id, $data, $ttl); + return $this->{$this->_adapter}->save($this->key_prefix.$id, $data, $ttl); } // ------------------------------------------------------------------------ @@ -157,12 +163,12 @@ class CI_Cache extends CI_Driver_Library { /** * Delete from Cache * - * @param mixed unique identifier of the item in the cache - * @return bool true on success/false on failure + * @param string $id Cache ID + * @return bool TRUE on success, FALSE on failure */ public function delete($id) { - return $this->{$this->_adapter}->delete($id); + return $this->{$this->_adapter}->delete($this->key_prefix.$id); } // ------------------------------------------------------------------------ @@ -170,7 +176,7 @@ class CI_Cache extends CI_Driver_Library { /** * Clean the cache * - * @return bool false on failure/true on success + * @return bool TRUE on success, FALSE on failure */ public function clean() { @@ -182,8 +188,8 @@ class CI_Cache extends CI_Driver_Library { /** * Cache Info * - * @param string user/filehits - * @return mixed array on success, false on failure + * @param string $type = 'user' user/filehits + * @return mixed array containing cache info on success OR FALSE on failure */ public function cache_info($type = 'user') { @@ -195,12 +201,12 @@ class CI_Cache extends CI_Driver_Library { /** * Get Cache Metadata * - * @param mixed key to get cache metadata on - * @return mixed return value from child method + * @param string $id key to get cache metadata on + * @return mixed cache item metadata */ public function get_metadata($id) { - return $this->{$this->_adapter}->get_metadata($id); + return $this->{$this->_adapter}->get_metadata($this->key_prefix.$id); } // ------------------------------------------------------------------------ @@ -208,7 +214,7 @@ class CI_Cache extends CI_Driver_Library { /** * Is the requested driver supported in this environment? * - * @param string The driver to test. + * @param string $driver The driver to test * @return array */ public function is_supported($driver) |