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authorFlorian Pritz <bluewind@xinu.at>2017-09-26 13:46:14 +0200
committerFlorian Pritz <bluewind@xinu.at>2017-09-26 13:46:14 +0200
commit3ff6ffa3341c876b741feb66552cdd110b67872e (patch)
tree69e11cd0009ddd1346f2dc4cd8c47244368db28e /system/libraries/Cache/drivers
parentbc2f7f596f727e204e8b8c5b849545745b3cbfaa (diff)
parent81a4c8c630ef59cffea0c24e64fb6fa7f09bfcf6 (diff)
Merge CodeIgniter 3 support
Diffstat (limited to 'system/libraries/Cache/drivers')
-rw-r--r--system/libraries/Cache/drivers/Cache_apc.php172
-rw-r--r--system/libraries/Cache/drivers/Cache_dummy.php108
-rw-r--r--system/libraries/Cache/drivers/Cache_file.php223
-rw-r--r--system/libraries/Cache/drivers/Cache_memcached.php277
-rw-r--r--system/libraries/Cache/drivers/Cache_redis.php328
-rw-r--r--system/libraries/Cache/drivers/Cache_wincache.php217
-rw-r--r--system/libraries/Cache/drivers/index.html3
7 files changed, 1086 insertions, 242 deletions
diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php
index fdc740138..f2b61adb1 100644
--- a/system/libraries/Cache/drivers/Cache_apc.php
+++ b/system/libraries/Cache/drivers/Cache_apc.php
@@ -1,19 +1,41 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php
/**
* CodeIgniter
*
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP
*
- * @package CodeIgniter
- * @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2006 - 2014 EllisLab, Inc.
- * @license http://codeigniter.com/user_guide/license.html
- * @link http://codeigniter.com
- * @since Version 2.0
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package CodeIgniter
+ * @author EllisLab Dev Team
+ * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
+ * @license http://opensource.org/licenses/MIT MIT License
+ * @link https://codeigniter.com
+ * @since Version 2.0.0
* @filesource
*/
-
-// ------------------------------------------------------------------------
+defined('BASEPATH') OR exit('No direct script access allowed');
/**
* CodeIgniter APC Caching Class
@@ -21,26 +43,51 @@
* @package CodeIgniter
* @subpackage Libraries
* @category Core
- * @author ExpressionEngine Dev Team
+ * @author EllisLab Dev Team
* @link
*/
-
class CI_Cache_apc extends CI_Driver {
/**
+ * Class constructor
+ *
+ * Only present so that an error message is logged
+ * if APC is not available.
+ *
+ * @return void
+ */
+ public function __construct()
+ {
+ if ( ! $this->is_supported())
+ {
+ log_message('error', 'Cache: Failed to initialize APC; extension not loaded/enabled?');
+ }
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
* Get
*
- * Look for a value in the cache. If it exists, return the data
+ * Look for a value in the cache. If it exists, return the data
* if not, return FALSE
*
- * @param string
- * @return mixed value that is stored/FALSE on failure
+ * @param string
+ * @return mixed value that is stored/FALSE on failure
*/
public function get($id)
{
- $data = apc_fetch($id);
+ $success = FALSE;
+ $data = apc_fetch($id, $success);
- return (is_array($data)) ? $data[0] : FALSE;
+ if ($success === TRUE)
+ {
+ return is_array($data)
+ ? unserialize($data[0])
+ : $data;
+ }
+
+ return FALSE;
}
// ------------------------------------------------------------------------
@@ -48,15 +95,21 @@ class CI_Cache_apc extends CI_Driver {
/**
* Cache Save
*
- * @param string Unique Key
- * @param mixed Data to store
- * @param int Length of time (in seconds) to cache the data
- *
- * @return boolean true on success/false on failure
+ * @param string $id Cache ID
+ * @param mixed $data Data to store
+ * @param int $ttl Length of time (in seconds) to cache the data
+ * @param bool $raw Whether to store the raw value
+ * @return bool TRUE on success, FALSE on failure
*/
- public function save($id, $data, $ttl = 60)
+ public function save($id, $data, $ttl = 60, $raw = FALSE)
{
- return apc_store($id, array($data, time(), $ttl), $ttl);
+ $ttl = (int) $ttl;
+
+ return apc_store(
+ $id,
+ ($raw === TRUE ? $data : array(serialize($data), time(), $ttl)),
+ $ttl
+ );
}
// ------------------------------------------------------------------------
@@ -64,8 +117,8 @@ class CI_Cache_apc extends CI_Driver {
/**
* Delete from Cache
*
- * @param mixed unique identifier of the item in the cache
- * @param boolean true on success/false on failure
+ * @param mixed unique identifier of the item in the cache
+ * @return bool true on success/false on failure
*/
public function delete($id)
{
@@ -75,9 +128,37 @@ class CI_Cache_apc extends CI_Driver {
// ------------------------------------------------------------------------
/**
+ * Increment a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to add
+ * @return mixed New value on success or FALSE on failure
+ */
+ public function increment($id, $offset = 1)
+ {
+ return apc_inc($id, $offset);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Decrement a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to reduce by
+ * @return mixed New value on success or FALSE on failure
+ */
+ public function decrement($id, $offset = 1)
+ {
+ return apc_dec($id, $offset);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
* Clean the cache
*
- * @return boolean false on failure/true on success
+ * @return bool false on failure/true on success
*/
public function clean()
{
@@ -89,27 +170,28 @@ class CI_Cache_apc extends CI_Driver {
/**
* Cache Info
*
- * @param string user/filehits
- * @return mixed array on success, false on failure
+ * @param string user/filehits
+ * @return mixed array on success, false on failure
*/
- public function cache_info($type = NULL)
- {
- return apc_cache_info($type);
- }
+ public function cache_info($type = NULL)
+ {
+ return apc_cache_info($type);
+ }
// ------------------------------------------------------------------------
/**
* Get Cache Metadata
*
- * @param mixed key to get cache metadata on
- * @return mixed array on success/false on failure
+ * @param mixed key to get cache metadata on
+ * @return mixed array on success/false on failure
*/
public function get_metadata($id)
{
- $stored = apc_fetch($id);
+ $success = FALSE;
+ $stored = apc_fetch($id, $success);
- if (count($stored) !== 3)
+ if ($success === FALSE OR count($stored) !== 3)
{
return FALSE;
}
@@ -119,7 +201,7 @@ class CI_Cache_apc extends CI_Driver {
return array(
'expire' => $time + $ttl,
'mtime' => $time,
- 'data' => $data
+ 'data' => unserialize($data)
);
}
@@ -129,19 +211,11 @@ class CI_Cache_apc extends CI_Driver {
* is_supported()
*
* Check to see if APC is available on this system, bail if it isn't.
+ *
+ * @return bool
*/
public function is_supported()
{
- if ( ! extension_loaded('apc') OR ini_get('apc.enabled') != "1")
- {
- log_message('error', 'The APC PHP extension must be loaded to use APC Cache.');
- return FALSE;
- }
-
- return TRUE;
+ return (extension_loaded('apc') && ini_get('apc.enabled'));
}
-
}
-
-/* End of file Cache_apc.php */
-/* Location: ./system/libraries/Cache/drivers/Cache_apc.php */ \ No newline at end of file
diff --git a/system/libraries/Cache/drivers/Cache_dummy.php b/system/libraries/Cache/drivers/Cache_dummy.php
index 6c38e91ad..c6d9a61f1 100644
--- a/system/libraries/Cache/drivers/Cache_dummy.php
+++ b/system/libraries/Cache/drivers/Cache_dummy.php
@@ -1,19 +1,41 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php
/**
* CodeIgniter
*
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP
*
- * @package CodeIgniter
- * @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2006 - 2014 EllisLab, Inc.
- * @license http://codeigniter.com/user_guide/license.html
- * @link http://codeigniter.com
- * @since Version 2.0
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package CodeIgniter
+ * @author EllisLab Dev Team
+ * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
+ * @license http://opensource.org/licenses/MIT MIT License
+ * @link https://codeigniter.com
+ * @since Version 2.0
* @filesource
*/
-
-// ------------------------------------------------------------------------
+defined('BASEPATH') OR exit('No direct script access allowed');
/**
* CodeIgniter Dummy Caching Class
@@ -21,10 +43,9 @@
* @package CodeIgniter
* @subpackage Libraries
* @category Core
- * @author ExpressionEngine Dev Team
+ * @author EllisLab Dev Team
* @link
*/
-
class CI_Cache_dummy extends CI_Driver {
/**
@@ -32,8 +53,8 @@ class CI_Cache_dummy extends CI_Driver {
*
* Since this is the dummy class, it's always going to return FALSE.
*
- * @param string
- * @return Boolean FALSE
+ * @param string
+ * @return bool FALSE
*/
public function get($id)
{
@@ -45,13 +66,13 @@ class CI_Cache_dummy extends CI_Driver {
/**
* Cache Save
*
- * @param string Unique Key
- * @param mixed Data to store
- * @param int Length of time (in seconds) to cache the data
- *
- * @return boolean TRUE, Simulating success
+ * @param string Unique Key
+ * @param mixed Data to store
+ * @param int Length of time (in seconds) to cache the data
+ * @param bool Whether to store the raw value
+ * @return bool TRUE, Simulating success
*/
- public function save($id, $data, $ttl = 60)
+ public function save($id, $data, $ttl = 60, $raw = FALSE)
{
return TRUE;
}
@@ -61,8 +82,8 @@ class CI_Cache_dummy extends CI_Driver {
/**
* Delete from Cache
*
- * @param mixed unique identifier of the item in the cache
- * @param boolean TRUE, simulating success
+ * @param mixed unique identifier of the item in the cache
+ * @return bool TRUE, simulating success
*/
public function delete($id)
{
@@ -72,9 +93,37 @@ class CI_Cache_dummy extends CI_Driver {
// ------------------------------------------------------------------------
/**
+ * Increment a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to add
+ * @return mixed New value on success or FALSE on failure
+ */
+ public function increment($id, $offset = 1)
+ {
+ return TRUE;
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Decrement a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to reduce by
+ * @return mixed New value on success or FALSE on failure
+ */
+ public function decrement($id, $offset = 1)
+ {
+ return TRUE;
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
* Clean the cache
*
- * @return boolean TRUE, simulating success
+ * @return bool TRUE, simulating success
*/
public function clean()
{
@@ -86,8 +135,8 @@ class CI_Cache_dummy extends CI_Driver {
/**
* Cache Info
*
- * @param string user/filehits
- * @return boolean FALSE
+ * @param string user/filehits
+ * @return bool FALSE
*/
public function cache_info($type = NULL)
{
@@ -99,8 +148,8 @@ class CI_Cache_dummy extends CI_Driver {
/**
* Get Cache Metadata
*
- * @param mixed key to get cache metadata on
- * @return boolean FALSE
+ * @param mixed key to get cache metadata on
+ * @return bool FALSE
*/
public function get_metadata($id)
{
@@ -113,7 +162,7 @@ class CI_Cache_dummy extends CI_Driver {
* Is this caching driver supported on the system?
* Of course this one is.
*
- * @return TRUE;
+ * @return bool TRUE
*/
public function is_supported()
{
@@ -121,6 +170,3 @@ class CI_Cache_dummy extends CI_Driver {
}
}
-
-/* End of file Cache_dummy.php */
-/* Location: ./system/libraries/Cache/drivers/Cache_dummy.php */ \ No newline at end of file
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index 2f250e764..8a36e9d79 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -1,45 +1,71 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php
/**
* CodeIgniter
*
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP
*
- * @package CodeIgniter
- * @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2006 - 2014 EllisLab, Inc.
- * @license http://codeigniter.com/user_guide/license.html
- * @link http://codeigniter.com
- * @since Version 2.0
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package CodeIgniter
+ * @author EllisLab Dev Team
+ * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
+ * @license http://opensource.org/licenses/MIT MIT License
+ * @link https://codeigniter.com
+ * @since Version 2.0
* @filesource
*/
-
-// ------------------------------------------------------------------------
+defined('BASEPATH') OR exit('No direct script access allowed');
/**
- * CodeIgniter Memcached Caching Class
+ * CodeIgniter File Caching Class
*
* @package CodeIgniter
* @subpackage Libraries
* @category Core
- * @author ExpressionEngine Dev Team
+ * @author EllisLab Dev Team
* @link
*/
-
class CI_Cache_file extends CI_Driver {
+ /**
+ * Directory in which to save cache files
+ *
+ * @var string
+ */
protected $_cache_path;
/**
- * Constructor
+ * Initialize file-based cache
+ *
+ * @return void
*/
public function __construct()
{
$CI =& get_instance();
$CI->load->helper('file');
-
$path = $CI->config->item('cache_path');
-
- $this->_cache_path = ($path == '') ? APPPATH.'cache/' : $path;
+ $this->_cache_path = ($path === '') ? APPPATH.'cache/' : $path;
}
// ------------------------------------------------------------------------
@@ -47,26 +73,13 @@ class CI_Cache_file extends CI_Driver {
/**
* Fetch from cache
*
- * @param mixed unique key id
- * @return mixed data on success/false on failure
+ * @param string $id Cache ID
+ * @return mixed Data on success, FALSE on failure
*/
public function get($id)
{
- if ( ! file_exists($this->_cache_path.$id))
- {
- return FALSE;
- }
-
- $data = read_file($this->_cache_path.$id);
- $data = unserialize($data);
-
- if (time() > $data['time'] + $data['ttl'])
- {
- $this->delete($id);
- return FALSE;
- }
-
- return $data['data'];
+ $data = $this->_get($id);
+ return is_array($data) ? $data['data'] : FALSE;
}
// ------------------------------------------------------------------------
@@ -74,23 +87,23 @@ class CI_Cache_file extends CI_Driver {
/**
* Save into cache
*
- * @param string unique key
- * @param mixed data to store
- * @param int length of time (in seconds) the cache is valid
- * - Default is 60 seconds
- * @return boolean true on success/false on failure
+ * @param string $id Cache ID
+ * @param mixed $data Data to store
+ * @param int $ttl Time to live in seconds
+ * @param bool $raw Whether to store the raw value (unused)
+ * @return bool TRUE on success, FALSE on failure
*/
- public function save($id, $data, $ttl = 60)
+ public function save($id, $data, $ttl = 60, $raw = FALSE)
{
$contents = array(
- 'time' => time(),
- 'ttl' => $ttl,
- 'data' => $data
- );
+ 'time' => time(),
+ 'ttl' => $ttl,
+ 'data' => $data
+ );
if (write_file($this->_cache_path.$id, serialize($contents)))
{
- @chmod($this->_cache_path.$id, 0777);
+ chmod($this->_cache_path.$id, 0640);
return TRUE;
}
@@ -102,16 +115,68 @@ class CI_Cache_file extends CI_Driver {
/**
* Delete from Cache
*
- * @param mixed unique identifier of item in cache
- * @return boolean true on success/false on failure
+ * @param mixed unique identifier of item in cache
+ * @return bool true on success/false on failure
*/
public function delete($id)
{
- try {
- return unlink($this->_cache_path.$id);
- } catch (\ErrorException $e) {
- return false;
+ return is_file($this->_cache_path.$id) ? unlink($this->_cache_path.$id) : FALSE;
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Increment a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to add
+ * @return New value on success, FALSE on failure
+ */
+ public function increment($id, $offset = 1)
+ {
+ $data = $this->_get($id);
+
+ if ($data === FALSE)
+ {
+ $data = array('data' => 0, 'ttl' => 60);
+ }
+ elseif ( ! is_int($data['data']))
+ {
+ return FALSE;
+ }
+
+ $new_value = $data['data'] + $offset;
+ return $this->save($id, $new_value, $data['ttl'])
+ ? $new_value
+ : FALSE;
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Decrement a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to reduce by
+ * @return New value on success, FALSE on failure
+ */
+ public function decrement($id, $offset = 1)
+ {
+ $data = $this->_get($id);
+
+ if ($data === FALSE)
+ {
+ $data = array('data' => 0, 'ttl' => 60);
}
+ elseif ( ! is_int($data['data']))
+ {
+ return FALSE;
+ }
+
+ $new_value = $data['data'] - $offset;
+ return $this->save($id, $new_value, $data['ttl'])
+ ? $new_value
+ : FALSE;
}
// ------------------------------------------------------------------------
@@ -119,11 +184,11 @@ class CI_Cache_file extends CI_Driver {
/**
* Clean the Cache
*
- * @return boolean false on failure/true on success
+ * @return bool false on failure/true on success
*/
public function clean()
{
- return delete_files($this->_cache_path);
+ return delete_files($this->_cache_path, FALSE, TRUE);
}
// ------------------------------------------------------------------------
@@ -133,8 +198,8 @@ class CI_Cache_file extends CI_Driver {
*
* Not supported by file-based caching
*
- * @param string user/filehits
- * @return mixed FALSE
+ * @param string user/filehits
+ * @return mixed FALSE
*/
public function cache_info($type = NULL)
{
@@ -146,31 +211,30 @@ class CI_Cache_file extends CI_Driver {
/**
* Get Cache Metadata
*
- * @param mixed key to get cache metadata on
- * @return mixed FALSE on failure, array on success.
+ * @param mixed key to get cache metadata on
+ * @return mixed FALSE on failure, array on success.
*/
public function get_metadata($id)
{
- if ( ! file_exists($this->_cache_path.$id))
+ if ( ! is_file($this->_cache_path.$id))
{
return FALSE;
}
- $data = read_file($this->_cache_path.$id);
- $data = unserialize($data);
+ $data = unserialize(file_get_contents($this->_cache_path.$id));
if (is_array($data))
{
$mtime = filemtime($this->_cache_path.$id);
- if ( ! isset($data['ttl']))
+ if ( ! isset($data['ttl'], $data['time']))
{
return FALSE;
}
return array(
- 'expire' => $mtime + $data['ttl'],
- 'mtime' => $mtime
+ 'expire' => $data['time'] + $data['ttl'],
+ 'mtime' => $mtime
);
}
@@ -184,14 +248,39 @@ class CI_Cache_file extends CI_Driver {
*
* In the file driver, check to see that the cache directory is indeed writable
*
- * @return boolean
+ * @return bool
*/
public function is_supported()
{
return is_really_writable($this->_cache_path);
}
-}
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get all data
+ *
+ * Internal method to get all the relevant data about a cache item
+ *
+ * @param string $id Cache ID
+ * @return mixed Data array on success or FALSE on failure
+ */
+ protected function _get($id)
+ {
+ if ( ! is_file($this->_cache_path.$id))
+ {
+ return FALSE;
+ }
+
+ $data = unserialize(file_get_contents($this->_cache_path.$id));
-/* End of file Cache_file.php */
-/* Location: ./system/libraries/Cache/drivers/Cache_file.php */ \ No newline at end of file
+ if ($data['ttl'] > 0 && time() > $data['time'] + $data['ttl'])
+ {
+ unlink($this->_cache_path.$id);
+ return FALSE;
+ }
+
+ return $data;
+ }
+
+}
diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php
index f9d578b93..b642a2c03 100644
--- a/system/libraries/Cache/drivers/Cache_memcached.php
+++ b/system/libraries/Cache/drivers/Cache_memcached.php
@@ -1,19 +1,41 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php
/**
* CodeIgniter
*
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP
*
- * @package CodeIgniter
- * @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2006 - 2014 EllisLab, Inc.
- * @license http://codeigniter.com/user_guide/license.html
- * @link http://codeigniter.com
- * @since Version 2.0
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package CodeIgniter
+ * @author EllisLab Dev Team
+ * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
+ * @license http://opensource.org/licenses/MIT MIT License
+ * @link https://codeigniter.com
+ * @since Version 2.0
* @filesource
*/
-
-// ------------------------------------------------------------------------
+defined('BASEPATH') OR exit('No direct script access allowed');
/**
* CodeIgniter Memcached Caching Class
@@ -21,35 +43,105 @@
* @package CodeIgniter
* @subpackage Libraries
* @category Core
- * @author ExpressionEngine Dev Team
+ * @author EllisLab Dev Team
* @link
*/
-
class CI_Cache_memcached extends CI_Driver {
- private $_memcached; // Holds the memcached object
+ /**
+ * Holds the memcached object
+ *
+ * @var object
+ */
+ protected $_memcached;
+
+ /**
+ * Memcached configuration
+ *
+ * @var array
+ */
+ protected $_config = array(
+ 'default' => array(
+ 'host' => '127.0.0.1',
+ 'port' => 11211,
+ 'weight' => 1
+ )
+ );
+
+ // ------------------------------------------------------------------------
- protected $_memcache_conf = array(
- 'default' => array(
- 'default_host' => '127.0.0.1',
- 'default_port' => 11211,
- 'default_weight' => 1
- )
+ /**
+ * Class constructor
+ *
+ * Setup Memcache(d)
+ *
+ * @return void
+ */
+ public function __construct()
+ {
+ // Try to load memcached server info from the config file.
+ $CI =& get_instance();
+ $defaults = $this->_config['default'];
+
+ if ($CI->config->load('memcached', TRUE, TRUE))
+ {
+ $this->_config = $CI->config->config['memcached'];
+ }
+
+ if (class_exists('Memcached', FALSE))
+ {
+ $this->_memcached = new Memcached();
+ }
+ elseif (class_exists('Memcache', FALSE))
+ {
+ $this->_memcached = new Memcache();
+ }
+ else
+ {
+ log_message('error', 'Cache: Failed to create Memcache(d) object; extension not loaded?');
+ return;
+ }
+
+ foreach ($this->_config as $cache_server)
+ {
+ isset($cache_server['hostname']) OR $cache_server['hostname'] = $defaults['host'];
+ isset($cache_server['port']) OR $cache_server['port'] = $defaults['port'];
+ isset($cache_server['weight']) OR $cache_server['weight'] = $defaults['weight'];
+
+ if ($this->_memcached instanceof Memcache)
+ {
+ // Third parameter is persistence and defaults to TRUE.
+ $this->_memcached->addServer(
+ $cache_server['hostname'],
+ $cache_server['port'],
+ TRUE,
+ $cache_server['weight']
);
+ }
+ elseif ($this->_memcached instanceof Memcached)
+ {
+ $this->_memcached->addServer(
+ $cache_server['hostname'],
+ $cache_server['port'],
+ $cache_server['weight']
+ );
+ }
+ }
+ }
// ------------------------------------------------------------------------
/**
* Fetch from cache
*
- * @param mixed unique key id
- * @return mixed data on success/false on failure
+ * @param string $id Cache ID
+ * @return mixed Data on success, FALSE on failure
*/
public function get($id)
{
$data = $this->_memcached->get($id);
- return (is_array($data)) ? $data[0] : FALSE;
+ return is_array($data) ? $data[0] : $data;
}
// ------------------------------------------------------------------------
@@ -57,20 +149,26 @@ class CI_Cache_memcached extends CI_Driver {
/**
* Save
*
- * @param string unique identifier
- * @param mixed data being cached
- * @param int time to live
- * @return boolean true on success, false on failure
+ * @param string $id Cache ID
+ * @param mixed $data Data being cached
+ * @param int $ttl Time to live
+ * @param bool $raw Whether to store the raw value
+ * @return bool TRUE on success, FALSE on failure
*/
- public function save($id, $data, $ttl = 60)
+ public function save($id, $data, $ttl = 60, $raw = FALSE)
{
- if (get_class($this->_memcached) == 'Memcached')
+ if ($raw !== TRUE)
{
- return $this->_memcached->set($id, array($data, time(), $ttl), $ttl);
+ $data = array($data, time(), $ttl);
}
- else if (get_class($this->_memcached) == 'Memcache')
+
+ if ($this->_memcached instanceof Memcached)
+ {
+ return $this->_memcached->set($id, $data, $ttl);
+ }
+ elseif ($this->_memcached instanceof Memcache)
{
- return $this->_memcached->set($id, array($data, time(), $ttl), 0, $ttl);
+ return $this->_memcached->set($id, $data, 0, $ttl);
}
return FALSE;
@@ -81,8 +179,8 @@ class CI_Cache_memcached extends CI_Driver {
/**
* Delete from Cache
*
- * @param mixed key to be deleted.
- * @return boolean true on success, false on failure
+ * @param mixed $id key to be deleted.
+ * @return bool true on success, false on failure
*/
public function delete($id)
{
@@ -92,9 +190,37 @@ class CI_Cache_memcached extends CI_Driver {
// ------------------------------------------------------------------------
/**
+ * Increment a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to add
+ * @return mixed New value on success or FALSE on failure
+ */
+ public function increment($id, $offset = 1)
+ {
+ return $this->_memcached->increment($id, $offset);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Decrement a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to reduce by
+ * @return mixed New value on success or FALSE on failure
+ */
+ public function decrement($id, $offset = 1)
+ {
+ return $this->_memcached->decrement($id, $offset);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
* Clean the Cache
*
- * @return boolean false on failure/true on success
+ * @return bool false on failure/true on success
*/
public function clean()
{
@@ -106,10 +232,9 @@ class CI_Cache_memcached extends CI_Driver {
/**
* Cache Info
*
- * @param null type not supported in memcached
- * @return mixed array on success, false on failure
+ * @return mixed array on success, false on failure
*/
- public function cache_info($type = NULL)
+ public function cache_info()
{
return $this->_memcached->getStats();
}
@@ -119,8 +244,8 @@ class CI_Cache_memcached extends CI_Driver {
/**
* Get Cache Metadata
*
- * @param mixed key to get cache metadata on
- * @return mixed FALSE on failure, array on success.
+ * @param mixed $id key to get cache metadata on
+ * @return mixed FALSE on failure, array on success.
*/
public function get_metadata($id)
{
@@ -143,72 +268,36 @@ class CI_Cache_memcached extends CI_Driver {
// ------------------------------------------------------------------------
/**
- * Setup memcached.
+ * Is supported
+ *
+ * Returns FALSE if memcached is not supported on the system.
+ * If it is, we setup the memcached object & return TRUE
+ *
+ * @return bool
*/
- private function _setup_memcached()
+ public function is_supported()
{
- // Try to load memcached server info from the config file.
- $CI =& get_instance();
- if ($CI->config->load('memcached', TRUE, TRUE))
- {
- if (is_array($CI->config->config['memcached']))
- {
- $this->_memcache_conf = NULL;
-
- foreach ($CI->config->config['memcached'] as $name => $conf)
- {
- $this->_memcache_conf[$name] = $conf;
- }
- }
- }
-
- $this->_memcached = new Memcached();
-
- foreach ($this->_memcache_conf as $name => $cache_server)
- {
- if ( ! array_key_exists('hostname', $cache_server))
- {
- $cache_server['hostname'] = $this->_default_options['default_host'];
- }
-
- if ( ! array_key_exists('port', $cache_server))
- {
- $cache_server['port'] = $this->_default_options['default_port'];
- }
-
- if ( ! array_key_exists('weight', $cache_server))
- {
- $cache_server['weight'] = $this->_default_options['default_weight'];
- }
-
- $this->_memcached->addServer(
- $cache_server['hostname'], $cache_server['port'], $cache_server['weight']
- );
- }
+ return (extension_loaded('memcached') OR extension_loaded('memcache'));
}
// ------------------------------------------------------------------------
-
/**
- * Is supported
+ * Class destructor
*
- * Returns FALSE if memcached is not supported on the system.
- * If it is, we setup the memcached object & return TRUE
+ * Closes the connection to Memcache(d) if present.
+ *
+ * @return void
*/
- public function is_supported()
+ public function __destruct()
{
- if ( ! extension_loaded('memcached'))
+ if ($this->_memcached instanceof Memcache)
{
- log_message('error', 'The Memcached Extension must be loaded to use Memcached Cache.');
- return FALSE;
+ $this->_memcached->close();
+ }
+ elseif ($this->_memcached instanceof Memcached && method_exists($this->_memcached, 'quit'))
+ {
+ $this->_memcached->quit();
}
-
- $this->_setup_memcached();
- return TRUE;
}
-
}
-
-/* End of file Cache_memcached.php */
-/* Location: ./system/libraries/Cache/drivers/Cache_memcached.php */ \ No newline at end of file
diff --git a/system/libraries/Cache/drivers/Cache_redis.php b/system/libraries/Cache/drivers/Cache_redis.php
new file mode 100644
index 000000000..ac67be077
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_redis.php
@@ -0,0 +1,328 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package CodeIgniter
+ * @author EllisLab Dev Team
+ * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
+ * @license http://opensource.org/licenses/MIT MIT License
+ * @link https://codeigniter.com
+ * @since Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Redis Caching Class
+ *
+ * @package CodeIgniter
+ * @subpackage Libraries
+ * @category Core
+ * @author Anton Lindqvist <anton@qvister.se>
+ * @link
+ */
+class CI_Cache_redis extends CI_Driver
+{
+ /**
+ * Default config
+ *
+ * @static
+ * @var array
+ */
+ protected static $_default_config = array(
+ 'socket_type' => 'tcp',
+ 'host' => '127.0.0.1',
+ 'password' => NULL,
+ 'port' => 6379,
+ 'timeout' => 0
+ );
+
+ /**
+ * Redis connection
+ *
+ * @var Redis
+ */
+ protected $_redis;
+
+ /**
+ * An internal cache for storing keys of serialized values.
+ *
+ * @var array
+ */
+ protected $_serialized = array();
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Class constructor
+ *
+ * Setup Redis
+ *
+ * Loads Redis config file if present. Will halt execution
+ * if a Redis connection can't be established.
+ *
+ * @return void
+ * @see Redis::connect()
+ */
+ public function __construct()
+ {
+ if ( ! $this->is_supported())
+ {
+ log_message('error', 'Cache: Failed to create Redis object; extension not loaded?');
+ return;
+ }
+
+ $CI =& get_instance();
+
+ if ($CI->config->load('redis', TRUE, TRUE))
+ {
+ $config = array_merge(self::$_default_config, $CI->config->item('redis'));
+ }
+ else
+ {
+ $config = self::$_default_config;
+ }
+
+ $this->_redis = new Redis();
+
+ try
+ {
+ if ($config['socket_type'] === 'unix')
+ {
+ $success = $this->_redis->connect($config['socket']);
+ }
+ else // tcp socket
+ {
+ $success = $this->_redis->connect($config['host'], $config['port'], $config['timeout']);
+ }
+
+ if ( ! $success)
+ {
+ log_message('error', 'Cache: Redis connection failed. Check your configuration.');
+ }
+
+ if (isset($config['password']) && ! $this->_redis->auth($config['password']))
+ {
+ log_message('error', 'Cache: Redis authentication failed.');
+ }
+ }
+ catch (RedisException $e)
+ {
+ log_message('error', 'Cache: Redis connection refused ('.$e->getMessage().')');
+ }
+
+ // Initialize the index of serialized values.
+ $serialized = $this->_redis->sMembers('_ci_redis_serialized');
+ empty($serialized) OR $this->_serialized = array_flip($serialized);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get cache
+ *
+ * @param string $key Cache ID
+ * @return mixed
+ */
+ public function get($key)
+ {
+ $value = $this->_redis->get($key);
+
+ if ($value !== FALSE && isset($this->_serialized[$key]))
+ {
+ return unserialize($value);
+ }
+
+ return $value;
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Save cache
+ *
+ * @param string $id Cache ID
+ * @param mixed $data Data to save
+ * @param int $ttl Time to live in seconds
+ * @param bool $raw Whether to store the raw value (unused)
+ * @return bool TRUE on success, FALSE on failure
+ */
+ public function save($id, $data, $ttl = 60, $raw = FALSE)
+ {
+ if (is_array($data) OR is_object($data))
+ {
+ if ( ! $this->_redis->sIsMember('_ci_redis_serialized', $id) && ! $this->_redis->sAdd('_ci_redis_serialized', $id))
+ {
+ return FALSE;
+ }
+
+ isset($this->_serialized[$id]) OR $this->_serialized[$id] = TRUE;
+ $data = serialize($data);
+ }
+ elseif (isset($this->_serialized[$id]))
+ {
+ $this->_serialized[$id] = NULL;
+ $this->_redis->sRemove('_ci_redis_serialized', $id);
+ }
+
+ return $this->_redis->set($id, $data, $ttl);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Delete from cache
+ *
+ * @param string $key Cache key
+ * @return bool
+ */
+ public function delete($key)
+ {
+ if ($this->_redis->delete($key) !== 1)
+ {
+ return FALSE;
+ }
+
+ if (isset($this->_serialized[$key]))
+ {
+ $this->_serialized[$key] = NULL;
+ $this->_redis->sRemove('_ci_redis_serialized', $key);
+ }
+
+ return TRUE;
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Increment a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to add
+ * @return mixed New value on success or FALSE on failure
+ */
+ public function increment($id, $offset = 1)
+ {
+ return $this->_redis->incr($id, $offset);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Decrement a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to reduce by
+ * @return mixed New value on success or FALSE on failure
+ */
+ public function decrement($id, $offset = 1)
+ {
+ return $this->_redis->decr($id, $offset);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Clean cache
+ *
+ * @return bool
+ * @see Redis::flushDB()
+ */
+ public function clean()
+ {
+ return $this->_redis->flushDB();
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get cache driver info
+ *
+ * @param string $type Not supported in Redis.
+ * Only included in order to offer a
+ * consistent cache API.
+ * @return array
+ * @see Redis::info()
+ */
+ public function cache_info($type = NULL)
+ {
+ return $this->_redis->info();
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get cache metadata
+ *
+ * @param string $key Cache key
+ * @return array
+ */
+ public function get_metadata($key)
+ {
+ $value = $this->get($key);
+
+ if ($value !== FALSE)
+ {
+ return array(
+ 'expire' => time() + $this->_redis->ttl($key),
+ 'data' => $value
+ );
+ }
+
+ return FALSE;
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Check if Redis driver is supported
+ *
+ * @return bool
+ */
+ public function is_supported()
+ {
+ return extension_loaded('redis');
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Class destructor
+ *
+ * Closes the connection to Redis if present.
+ *
+ * @return void
+ */
+ public function __destruct()
+ {
+ if ($this->_redis)
+ {
+ $this->_redis->close();
+ }
+ }
+}
diff --git a/system/libraries/Cache/drivers/Cache_wincache.php b/system/libraries/Cache/drivers/Cache_wincache.php
new file mode 100644
index 000000000..f296a5e26
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_wincache.php
@@ -0,0 +1,217 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package CodeIgniter
+ * @author EllisLab Dev Team
+ * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
+ * @license http://opensource.org/licenses/MIT MIT License
+ * @link https://codeigniter.com
+ * @since Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Wincache Caching Class
+ *
+ * Read more about Wincache functions here:
+ * http://www.php.net/manual/en/ref.wincache.php
+ *
+ * @package CodeIgniter
+ * @subpackage Libraries
+ * @category Core
+ * @author Mike Murkovic
+ * @link
+ */
+class CI_Cache_wincache extends CI_Driver {
+
+ /**
+ * Class constructor
+ *
+ * Only present so that an error message is logged
+ * if APC is not available.
+ *
+ * @return void
+ */
+ public function __construct()
+ {
+ if ( ! $this->is_supported())
+ {
+ log_message('error', 'Cache: Failed to initialize Wincache; extension not loaded/enabled?');
+ }
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get
+ *
+ * Look for a value in the cache. If it exists, return the data,
+ * if not, return FALSE
+ *
+ * @param string $id Cache Ide
+ * @return mixed Value that is stored/FALSE on failure
+ */
+ public function get($id)
+ {
+ $success = FALSE;
+ $data = wincache_ucache_get($id, $success);
+
+ // Success returned by reference from wincache_ucache_get()
+ return ($success) ? $data : FALSE;
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Cache Save
+ *
+ * @param string $id Cache ID
+ * @param mixed $data Data to store
+ * @param int $ttl Time to live (in seconds)
+ * @param bool $raw Whether to store the raw value (unused)
+ * @return bool true on success/false on failure
+ */
+ public function save($id, $data, $ttl = 60, $raw = FALSE)
+ {
+ return wincache_ucache_set($id, $data, $ttl);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Delete from Cache
+ *
+ * @param mixed unique identifier of the item in the cache
+ * @return bool true on success/false on failure
+ */
+ public function delete($id)
+ {
+ return wincache_ucache_delete($id);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Increment a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to add
+ * @return mixed New value on success or FALSE on failure
+ */
+ public function increment($id, $offset = 1)
+ {
+ $success = FALSE;
+ $value = wincache_ucache_inc($id, $offset, $success);
+
+ return ($success === TRUE) ? $value : FALSE;
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Decrement a raw value
+ *
+ * @param string $id Cache ID
+ * @param int $offset Step/value to reduce by
+ * @return mixed New value on success or FALSE on failure
+ */
+ public function decrement($id, $offset = 1)
+ {
+ $success = FALSE;
+ $value = wincache_ucache_dec($id, $offset, $success);
+
+ return ($success === TRUE) ? $value : FALSE;
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Clean the cache
+ *
+ * @return bool false on failure/true on success
+ */
+ public function clean()
+ {
+ return wincache_ucache_clear();
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Cache Info
+ *
+ * @return mixed array on success, false on failure
+ */
+ public function cache_info()
+ {
+ return wincache_ucache_info(TRUE);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get Cache Metadata
+ *
+ * @param mixed key to get cache metadata on
+ * @return mixed array on success/false on failure
+ */
+ public function get_metadata($id)
+ {
+ if ($stored = wincache_ucache_info(FALSE, $id))
+ {
+ $age = $stored['ucache_entries'][1]['age_seconds'];
+ $ttl = $stored['ucache_entries'][1]['ttl_seconds'];
+ $hitcount = $stored['ucache_entries'][1]['hitcount'];
+
+ return array(
+ 'expire' => $ttl - $age,
+ 'hitcount' => $hitcount,
+ 'age' => $age,
+ 'ttl' => $ttl
+ );
+ }
+
+ return FALSE;
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * is_supported()
+ *
+ * Check to see if WinCache is available on this system, bail if it isn't.
+ *
+ * @return bool
+ */
+ public function is_supported()
+ {
+ return (extension_loaded('wincache') && ini_get('wincache.ucenabled'));
+ }
+}
diff --git a/system/libraries/Cache/drivers/index.html b/system/libraries/Cache/drivers/index.html
index c942a79ce..b702fbc39 100644
--- a/system/libraries/Cache/drivers/index.html
+++ b/system/libraries/Cache/drivers/index.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
<html>
<head>
<title>403 Forbidden</title>
@@ -7,4 +8,4 @@
<p>Directory access is forbidden.</p>
</body>
-</html> \ No newline at end of file
+</html>