What Plugin to insert PHP within a WP post or page?

I have a wordpress blog version 2.8.6 and I'm looking for WP plugin which enables me to put php code within a post or page. Any idea?

I tried the plugin 'exec-PHP' but I realized that it supports only up to WP version 2.8. (that's why it didn't work)

Any idea what plugin shall I use then?

 

Try this plugin

http://wordpress.org/extend/plugins/wp-syntax/

My Wordpress website 2.8.5 and it works perfectly. I think it will work on 2.8.6 too.