php在centos下的脚本没有解析的问题

如题，参考了许多，比如：http://serverfault.com/questions/523131/php5-is-installed-but-apache-is-displaying-php-as-uninterpreted-text-how-can-i
http://dev.antoinesolutions.com/php http://tecadmin.net/setup-httpd-with-fastcgi-and-php-on-centos-redhat/
最后，简单暴力的yum install php搞定了，汗

似乎在/etc/httpd/conf.d下多出了一个php.conf文件，内容如下：

#
# PHP is an HTML-embedded scripting language which attempts to make it
# easy for developers to write dynamically generated webpages.
#
<IfModule prefork.c>
LoadModule php5_module modules/libphp5.so
</IfModule>
<IfModule worker.c>
LoadModule php5_module modules/libphp5-zts.so
</IfModule>

#
# Cause the PHP interpreter to handle files with a .php extension.
#
AddHandler php5-script .php
AddType text/html .php

#
# Add index.php to the list of files that will be served as directory
# indexes.
#
DirectoryIndex index.php

#
# Uncomment the following line to allow PHP to pretty-print .phps
# files as PHP source code:
#
#AddType application/x-httpd-php-source .phps