###安装
composer require honglvshi/guangguang_bom
//check_extension 检测文件的后缀
//check_path检测的目录
$ret = new \GuangBom\Bom([
"check_extension" => ['php'],
"check_path" => [__DIR__,__DIR__]
]);
//true 代表直接替换bom头 false 只查找 默认flase
$ret->find(true);