install());
}
*/
define("INSTALLED", true);
function wp_cache_add($key, $data, $flag = '', $expire = 0)
{
return wp_cache_set($key, $data, $flag, $expire);
}
function wp_cache_close()
{
return true;
}
function wp_cache_delete($id, $flag = '')
{
global $wp_object_cache;
return $wp_object_cache->delete($id, $flag);
}
function wp_cache_flush()
{
global $wp_object_cache;
return $wp_object_cache->flush();
}
function wp_cache_get($id, $flag = '')
{
global $wp_object_cache;
return $wp_object_cache->get($id, $flag);
}
function wp_cache_init()
{
global $wp_object_cache;
$wp_object_cache = new WP_Object_Cache();
}
function wp_cache_replace($key, $data, $flag = '', $expire = 0)
{
return wp_cache_set($key, $data, $flag, $expire);
}
function wp_cache_set($key, $data, $flag = '', $expire = 0)
{
global $wp_object_cache;
$data = unserialize(serialize($data));
return $wp_object_cache->set($key, $data, $flag, $expire);
}
class WP_Object_Cache {
var $global_groups = array ('users', 'userlogins', 'usermeta');
var $cache = array();
var $table;
function delete($id, $group = 'default')
{
global $wpdb;
$key = $this->key($id, $group);
$query = "DELETE * FROM {$this->table} WHERE `key`='$key'";
$wpdb->query($query);
unset($this->cache[$key]);
return true;
}
function flush()
{
global $wpdb;
$query = "DELETE * FROM {$this->table}";
$wpdb->query($query);
return true;
}
function get($id, $group = 'default')
{
global $wpdb;
$key = $this->key($id, $group);
if ( isset($this->cache[$key]) )
$value = $this->cache[$key];
else
{
$query = "SELECT `value` FROM {$this->table} WHERE `key`='$id'";
$value = $wpdb->get_var($query);
}
$value = base64_decode(unserialize($value));
print_r($value);
if ( NULL === $value )
$value = false;
$this->cache[$key] = $value;
return $value;
}
function set($id, $data, $group = 'default', $expire = 0)
{
global $wpdb;
$key = $this->key($id, $group);
if ( is_resource($data) )
return false;
$data = base64_encode(serialize($data));
$query = "INSERT INTO {$this->table} (`key`,`value`) VALUES ('$id','$data')
ON DUPLICATE KEY UPDATE value='$data';";
$wpdb->query($query);
$this->cache[$key] = $data;
return $true;
}
function key($key, $group)
{
global $blog_id;
if ( empty($group) )
$group = 'default';
if (false !== array_search($group, $this->global_groups))
$prefix = '';
else
$prefix = $blog_id . ':';
return md5(ABSPATH . "$prefix$group:$key");
}
function stats()
{
/*
// Note that this is the total XCache stats, not just WP but also any other apps using XCache var storage
$xcache_info = xcache_info(XC_TYPE_VAR, 0);
echo "\n";
echo "Cache Hits: {$xcache_info['hits']}
\n\r";
echo "Cache Misses: {$xcache_info['misses']}
\r\n";
echo "
\n";
if ( !empty($this->cache) )
{
echo "\n\r";
print_r($this->cache);
echo "
\n\r";
}
*/
}
function WP_Object_Cache()
{
global $wpdb;
$this->table = $wpdb->prefix . "nst_mysql_cache";
if(INSTALLED!=true)
{
self::install();
}
}
function install()
{
global $wpdb;
$sql=
"CREATE TABLE IF NOT EXISTS {$this->table} (
`key` VARCHAR(500) NOT NULL,
`value` VARCHAR(500) DEFAULT NULL,
PRIMARY KEY(`key`)
)
ENGINE=MEMORY
PACK_KEYS=1;";
//require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
//dbDelta($sql);
$wpdb->query($sql);
return "The NeoSmart MySQL-based caching extension to the WordPress object-cache has been successfully installed.";
}
}
?>