PHP5.5 调用C#写的dll

dll

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.InteropServices;

namespace Toledo
{
    [ComVisible(true)]
    public class Scale
    {
        public string write()
        {
            return "hello world!";

        }

    }
}

已经强制签名、已经注册：

regasm  Toledo.dll <回车>

gacutil /I Toledo.dll <回车> 

PHP.ini

[PHP_COM_DOTNET]
extension=php_com_dotnet.dll

index.php

<?php
    $j = new COM("Toledo.Scale") or die("调用COM失败！");
    $s = $j->write();
    echo $s;

报错

Fatal error: in D:\xampp\htdocs\com\index.php on line 2

非常费解，求指点！ -_-||

---

建议封装到WCF中调用

http://www.cnblogs.com/tianbang/archive/2012/05/10/2494147.html