1. 配置擴展模塊的目錄：
extension_dir = "./ext/"
注意：在最後以定要以"/"結束。
2. 配置Mysql模模
extension=php_mysql.dll
說明：
php運行時配置：
在php運行的一些初始化參數，可以有在php.ini文件中設置。編譯時設置php.ini文件的路徑。也可以使用環境變量PHPRC來設置初始化參數。
php在參數在apache中是否有效？
1．如果php以cgi方式與apache整合，php將使用php.ini中的參數。
2. 如果php以apahce模塊方式加載，php的參數可以在httpd.conf中重新設置。如：
如果要配置生效需要設置：httpd.conf和.htaccess的參數：AllowOverride ALL 使得有權限完成配置
<IfModule mod_php5.c>
php_value include_path ".:/usr/local/lib/php"
php_admin_flag safe_mode on
</IfModule>
配置選項說明：
php_value name value
Sets the value of the specified directive. Can be used only
with PHP_INI_ALL and PHP_INI_PERDIR type directives. To clear a
previously set value use none as the value.
Note: Don't use php_value to set boolean values. php_flag (see
below) should be used instead.
php_flag name on|off
Used to set a boolean configuration directive. Can be used only
with PHP_INI_ALL and PHP_INI_PERDIR type directives.
php_admin_value name value
Sets the value of the specified directive. This can not be used
in .htaccess files. Any directive type set with php_admin_value
can not be overridden by .htaccess or virtualhost directives.
To clear a previously set value use none as the value.
php_admin_flag name on|off
Used to set a boolean configuration directive. This can not be
used in .htaccess files. Any directive type set with
php_admin_flag can not be overridden by .htaccess or
virtualhost directives.
php + apache 的配置
方式1. 配置CGI，在httpd.conf中加入：
ScriptAlias /php/ "c:/php/"
AddType application/x-httpd-php .php
# For PHP 4
Action application/x-httpd-php "/php/php.exe"
# For PHP 5
Action application/x-httpd-php "/php/php-cgi.exe"
方式2.配置php作爲apache的一個模塊，在httpd.conf中加入:
# For PHP 4 do something like this:
LoadModule php4_module "c:/php/sapi/php4apache2.dll"
AddType application/x-httpd-php .php
# For PHP 5 do something like this:
LoadModule php5_module "c:/php/php5apache2.dll"
AddType application/x-httpd-php .php
httpd.conf的配置需要重新啓動服務器後才生效。