upgrade to 2.2.37, but php still 5.1.6

I upgraded my system first to 2.2.36 and then to 2.2.37 and still php version is 5.1.6.

I tried run 2.2.37 upgrade again, but no change.
OS is Centos 5.0

Sam2k

 

5.1.6 is the PHP version that comes with CentOS 5.x and that is used by the main Apache.

ISPConfig 2 comes with its own Apache (for the control panel), and 2.2.37 comes with PHP 5.2.14.

 

How can I setting my server to run with php 5.2?
Now my php version is still 5.1.6.

 

If you use CentOS, you'd have to build PHP 5.2 manually because CentOS comes with PHP 5.1.6.