1、获取安装包php.i686;
2、安装php.i686
rpm -ivh php.i686
3、配置apache让其支持php
vi
#
# AddType allows you to add to or override the MIME configuration
# file mime.types for specific file types.
#
#AddType application/x-tar .tgz
AddType application/x-httpd-php .php \\新添加语句(前面有空格)
AddType application/x-httpd-php-source .phps \\新添加语句（前面有空格）
4、配置PHP服务器
vi /etc/php.ini
; Whether or not to register the EGPCS variables as global variables. You may
; want to turn this off if you don't want to clutter your scripts' global scope
; with user data. This makes most sense when coupled with track_vars - in which
; case you can access all of the GPC variables through the $HTTP_*_VARS[],
; variables.
; You should do your best to write your scripts so that they do not require
; register_globals to be on; Using form variables as globals can easily lead
; to possible security problems, if the code is not very well thought of.
; http://www.php.net/manual/en/ini.core.php#ini.register-globals
register_globals = On \\把register_globalsA的值改为on
5、启重apache
service httpd restart
6、测试PHP是否安装成功
写一个php测试页面info.php,放在apache的根目录/var/www/html下，其内容如下
<?php
phpinfo();
?>
在浏览器上输入127.0.0.1/info.php,如果能正常显示出php信息，则说明PHP安装成功！