/**
* @param bool $ifEcho 是否直接输出
* @return string null
*/
public function getCache($ifEcho = self::INDIRECT_ECHO_CACHE)
{
$file = "";
$cacheInfoFile = new FileLoader("{$this->cachePath}{$this->cacheId}/{$this->cacheDigest}.tmp", array("mode" => "read"));
if ($cacheInfoFile->isReadable()) {
$file = $cacheInfoFile->getFileString();
$cacheInfoFile->close();
} else {
trigger_error("缓存文件无法读取：{$this->cachePath}{$this->cacheId}/{$this->cacheDigest}.tmp", E_USER_WARNING);
}
if ($ifEcho) {
echo $file;
return null;
} else {
return $file;
}
}
