下载了php-5.2.1-win32-installer.msi这个安装包，一路全选，next，很顺利完成安装。

而后点上Start Apache in Console，居然弹出一大堆错误对话框提示!
如：没有找到OCI.dll,因此这个应用程序未能启动。重新安装应用程序可能会修复此问题。

还有ntwdblib.dll，libpq.dll，sqlite3.dll，aspell-15.dll，libcs.dll等等，一大推动态库没有安装

C:\Documents and Settings\ljlwill>php，查看如何下：
PHP Warning: PHP Startup:Unable to load dynamic library’C:\PHP\ext\php_mssql.
dll’ -找不到指定的模块。
in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library ‘C:\PHP\ext\php_oci8.d
ll’ – 找不到指定的模块。
in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library ‘C:\PHP\ext\php_pdo_ms
sql.dll’ – 找不到指定的模块。
in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library ‘C:\PHP\ext\php_pdo_oc
i.dll’ – 找不到指定的模块。
in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library ‘E:\PHP\ext\php_pdo_oc
i8.dll’ – 找不到指定的模块。
in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library ‘E:\PHP\ext\php_pdo_pg
sql.dll’ – 找不到指定的模块。
in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library ‘E:\PHP\ext\php_pdo_sq
lite_external.dll’ – 找不到指定的模块。
in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library ‘E:\PHP\ext\php_pgsql.
dll’ – 找不到指定的模块。
in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library ‘E:\PHP\ext\php_pspell
.dll’ – 找不到指定的模块。
in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library ‘E:\PHP\ext\php_sybase
_ct.dll’ – 找不到指定的模块。
in Unknown on line 0
Cannot find module (IP-MIB): At line 0 in (none)
Cannot find module (IF-MIB): At line 0 in (none)
Cannot find module (TCP-MIB): At line 0 in (none)
Cannot find module (UDP-MIB): At line 0 in (none)
Cannot find module (SNMPv2-MIB): At line 0 in (none)
Cannot find module (SNMPv2-SMI): At line 0 in (none)
Cannot find module (UCD-SNMP-MIB): At line 0 in (none)
Cannot find module (UCD-DEMO-MIB): At line 0 in (none)
Cannot find module (SNMP-TARGET-MIB): At line 0 in (none)
Cannot find module (SNMP-VIEW-BASED-ACM-MIB): At line 0 in (none)
Cannot find module (SNMP-COMMUNITY-MIB): At line 0 in (none)
Cannot find module (UCD-DLMOD-MIB): At line 0 in (none)
Cannot find module (SNMP-FRAMEWORK-MIB): At line 0 in (none)
Cannot find module (SNMP-MPD-MIB): At line 0 in (none)
Cannot find module (SNMP-USER-BASED-SM-MIB): At line 0 in (none)
Cannot find module (SNMP-NOTIFICATION-MIB): At line 0 in (none)
Cannot find module (SNMPv2-TM): At line 0 in (none)
原来是没有装相应的数据库,安装包中把所有支持这些数据库的包都装了，于是重新安装，并在安装包的选择扩展时选择自己机子上安装的数据库，问题解决。