求教连接数据库问题，win8.1(X64)+IIS+php5.5.23+sqlserver2008R2

曾经的王者

本人新手刚学习PHP，遇到连接SQLSERVER2008R2数据库问题，环境win8.1(X64)+IIS8.5+php5.5.23+sqlserver2008R2(x64)
- V% B) Y! a# b  pPHP文件能成功执行，但是执行phpinfo()并未发现sqlsrv，执行数据库连接后提示如下：
PHP Fatal error: Call to undefined function sqlsrv_connect() in E:\wwwroot\php.com\test\2.php on line 11
----------------代码如下---------------
0 X6 T% s9 y9 q2 l7 d7 E<?php
* E9 h/ g: O! |5 `  q$serverName = "(local)";
  $uid ="sa";
  $pwd = "mypwd123";

$connectionInfo = array("UID"=>$uid,"PWD"=>$pwd,"Database"=>"phpdb");

$conn = sqlsrv_connect( $serverName,$connectionInfo);
1 ^* f) |8 t" O4 b  if( $conn == false)
  {
6 O* K) t  a6 O. U9 }. `  echo "连接失败！";
- m- v( T- f' A" }die( print_r( sqlsrv_errors(), true));
  }
' l  p6 e" I  ~7 o?>
3 C% @! b7 {1 j; {-------------------------------------------------------------------------
望高手指点迷津

php.net里下载php-5.5.24-nts-Win32-VC11-x64.zip
微软官网下载 解压SQLSRV32.EXE后，拷贝php_pdo_sqlsrv_55_nts.dll和php_sqlsrv_55_nts.dll 到PHP安装目录ext
: W* l( v; h9 \# H并且修改了php.ini的配置文件extension=php_sqlsrv_55_nts.dll   
/ V& \1 o. [, k. [8 T2 e+ s  extension=php_pdo_sqlsrv_55_nts.dll
mssql.secure_connection = On
" o6 o- D/ T, t6 c' d$ E. x