title: PHP Unable to connect to MS SQL server
body: <p>I have used default MS SQL driver to connect to a SQL server in a php application.
  I'm using XAMPP 1.6.8. my php version is 5.2.6.</p>
  
  <p>Application was connected successfully to the SQL server and the application was running successfully for a long time. Now suddenly the application is showing an error on <code>mssql_connect()</code> function with same MS SQL access information.
  the error is "Unable to connect to server: xxx.xxx.xxx.xxx"</p>
  
  <p>I also checked the SQL server access info with a SQL client.  SQL client can connect successfully, therefore i think the access info is correct.</p>
  
  <p>Can any one help me resolved this issue?</p>
  
  <p>Thx</p>