upgrade to php 5.6

[claudiobiato]

Dear,
 
I have a machine with:
 
Ubuntu 12.4
Sentence Panel 1.0.3
Php 5.3
 
I need to upgrade to php 5.6
 
I used the commands for the update.
 
I check on the server the installed version php with the command (php -v)
 
PHP 5.6.29-1 + deb.sury.org ~ need + 1 (cli)
Copyright 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright 1998-2016 Zend Technologies
     With Zend OPcache v7.0.6-dev, Copyright 1999-2016, by Zend Technologies
 
 
But when I check through php.info and the Sentora panel it shows me that I'm still using php 5.3
 
My question is how to direct to php 5.6
 
Can I delete php 5.3? The server?
 
Or do we have another way to go?
 
I'm trying to install a module on my site most only works with php 5.6
 
Thanks and I look forward to your help.