有人搭建过win下php+sybase+pear:db的平台吗？

bitifirefly

折腾了一下午解决不了
现在情况是：
sybase-CT已经安装好了（装了sybase客户端）
pear:DB也工作正常（链接本地mysql没问题）
但是用pear链接sybase就是连不上　
DB Error: connect failed
以下是源程序

<?php
  // The pear base directory must be in your include_path
  require_once 'DB.php';
  $user = 'xxx';
  $pass = 'xxx';
  $host = 'xxx:xxx';
  $db_name = 'xxx';
  
  // Data Source Name: This is the universal connection string
  $dsn = "sybase://$user:$pass@$host/$db_name";
  
  // DB::connect will return a Pear DB object on success
  // or a Pear DB Error object on error
  // You can also set to TRUE the second param
  // if you want a persistent connection:
  // $db = DB::connect($dsn, true);
  $db = DB::connect($dsn);
  
  // With DB::isError you can differentiate between an error or
  // a valid connection.
  if (DB::isError($db)) {
          die ($db->;getMessage());
  }
  // You can disconnect from the database with:
  $db->;disconnect();
  ?>;