Downgrade PHP

Question

Hey guys,
So i'm sure i'm over looking something but I am mirroring a server I built with a production server and in order to do so I had to down grade from php 5.3 (default on centos 6) to php 5.2.  However after doing so I realized that root is not able to execute php and mysql.
[doug@myserver ~]$ php -v
PHP 5.2.17 (cli) (built: Jul 18 2014 16:27:17)
Copyright (c) 1997-2010 The PHP Group
So I know the php update worked also is what phpinfo shows, however from root I can't use this.
[root@myserver doug]# php -v
bash: php: command not found
I get the same when trying to use mysql which I find even more odd.
[root@myserver doug]# mysql -u root -p
bash: mysql: command not found
Any suggestions I have been googling like crazy but I can't seem to find a definite answer :-\

Answer 1

Ok Acutally doing some research I have found the problem, but i'm not entirely sure how to fix it.  So php -v doesn't work from root because of the root file path. For instance.
[root@myserver /]# whereis php
php: /etc/php.ini /etc/php.d /etc/php.ini-d3bak /usr/local/bin/php /usr/local/lib/php
[root@myserver /]# /usr/local/bin/php -v
PHP 5.2.17 (cli) (built: Jul 18 2014 16:27:17)
so the file path must have changed when I installed php 5.2 from source.