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)
( T& N& ~- ]" M& D! s" I+ o# R9 i; P/ KPHP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：
. A# o. }+ W# |; v$ E& C6 s: PPHP Fatal error: Call to undefined function sqlsrv_connect() in E:\wwwroot\php.com\test\2.php on line 11
0 _  x1 z/ {  P$ D+ @( s$ D----------------代码如下---------------
7 E  O- r9 m9 B( ?, b/ z<?php
$serverName = "(local)";
: b. \& \4 V9 y. W5 ]  @5 `% Z  $uid ="sa";
  $pwd = "mypwd123";
& |2 W, \; l1 B  r
% m5 q+ d7 N! |$connectionInfo = array("UID"=>$uid,"PWD"=>$pwd,"Database"=>"phpdb");

$conn = sqlsrv_connect( $serverName,$connectionInfo);
  if( $conn == false)
  {
  echo "连接失败！";
die( print_r( sqlsrv_errors(), true));
+ z! t& H1 @+ w; Y; B1 O  }
0 M7 }" {* N2 R2 m4 M?>
" g4 B4 {5 V0 X; h4 H-------------------------------------------------------------------------
* C( l" d5 i% `望高手指点迷津

php.net里下载php-5.5.24-nts-Win32-VC11-x64.zip
# |5 u4 R# K: ?8 Q0 `8 @& H5 F- e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
并且修改了php.ini的配置文件extension=php_sqlsrv_55_nts.dll   
# |8 e" c4 z- F+ H: N  extension=php_pdo_sqlsrv_55_nts.dll
/ {* i% Z, B! S' l% d' P- Smssql.secure_connection = On
! f5 r& o) }. O- Y4 B! V
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