yes, <?php, is very important
i setup two server,
1. windows 2008 enterprise x64 sp2 IIS7 + php 5.30 x64 + mysql 5.1.36 x64
2. windows 2008 standard x86 sp2 IIS7 + php 5.30 x86 + mysql 5.1.36 x86
it is run normal seemingly, parameters of php.ini changed below.
date.timezone = UTC
; Directory in which the loadable extensions (modules) reside.
; http://php.net/extension-dir
; extension_dir = "./"
; On windows:
extension_dir = "ext"
short_open_tag = On
Windows Extensions
extension=php_gd2.dll
extension=php_mbstring.dll
extension=php_mysql.dll
extension=php_mysqli.dll