php中配置文件保存修改操作 如config.php文件的读取修改等操作

?php
$file = fopen("test.txt","w");
echo fputs($file,"Hello World. Testing!");
fclose($file);
?>

if($request->isPost()){
        $data = $request->param();
        $newdata = php
?php
//七牛云插件配置
return [
    'accessKey' => '{$data['accessKey']}',
    'secretKey' => '{$data['secretKey']}',
    'bucket'    => '{$data['bucket']}',
    'domain'    => '{$data['domain']}'
];
php;
        
        @chmod(ADDON_PATH.'qiniu/config.php',0777);//给文件权限
        $fop=fopen(ADDON_PATH.'qiniu/config.php','w');//打开文件
        $res = fputs($fop,$newdata);//写入文件
        fclose($fop);//关闭文件

        if($res){//文件写入成功返回状态
              return json(['code'=>1,'msg'=>'修改成功！']);
        }else{
             return json(['code'=>0,'msg'=>'修改失败！']);
        }
        }