function cacheGet($key)
{
global $wp_version;
if (version_compare($wp_version, '2.8', '>=')) {
$trans_id = get_option('gad_trans_id');
if ($trans_id === false) {
$trans_id = 0;
}
return get_transient('gad_cache_' . $trans_id . '_' . md5($key));
} else {
$lh = SimpleFileCache::lock();
$filename = sys_get_temp_dir() . '/gad_cache_' . md5($key) . '.dat';
$result = '';
if ($f = @fopen($filename, "r")) {
$data = fread($f, filesize($filename));
$result = unserialize($data);
fclose($f);
}
SimpleFileCache::unlock($lh);
return $result;
}
}
