/**
* 读取缓存，并将缓存加载至 $_W 全局变量中
* @param string $key 缓存键名，如果键名以:结束，则做为分组名称读取所有缓存
*
*/
function cache_load($key, $unserialize = false)
{
global $_W;
if (substr($key, -1) == ':') {
$data = cache_search($key);
foreach ($data as $k => $v) {
$tmp =& cache_global($k);
$tmp = $unserialize ? iunserializer($v) : $v;
}
return cache_global($key);
} else {
$data = cache_read($key);
if ($key == 'setting') {
$_W['setting'] = $data;
return $_W['setting'];
} elseif ($key == 'modules') {
$_W['modules'] = $data;
return $_W['modules'];
} else {
$tmp =& cache_global($key);
$tmp = $unserialize ? iunserializer($data) : $data;
return $unserialize ? iunserializer($data) : $data;
}
}
}
function cache_clean($prefix = '') {
global $_W;
if(empty($prefix)) {
$sql = 'DELETE FROM ' . tablename('cache');
$result = pdo_query($sql);
if($result) {
unset($_W['cache']);
}
} else {
$sql = 'DELETE FROM ' . tablename('cache') . ' WHERE `key` LIKE :key';
$params = array();
$params[':key'] = "{$prefix}:%";
$result = pdo_query($sql, $params);
if($result) {
$tmp = &cache_global($key);
$tmp = null;
}
}
return $result;
}
