Hi guys,
today i will show to you how to upgrade on VestaCP PHP 5.x to a 2x faster PHP 7!

At start will upgrade EPEL, remember that we use the Centos 6, so EPEL must to be the 6 version.
# wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
# wget http://rpms.remirepo.net/enterprise/remi-release-6.rpm
# rpm -Uvh remi-release-6.rpm epel-release-latest-6.noarch.rpm

See what PHP version will have:
# yum list installed php*
Installed Packages
php55w.x86_64 5.5.38-1.w6
php55w-cli.x86_64 5.5.38-1.w6

See what PHP version will be available in our package:
# yum list available php* | grep php7
php70w.x86_64 7.0.11-1.w6 webtatic
php70w-bcmath.x86_64 7.0.11-1.w6 webtatic
php70w-cli.x86_64 7.0.11-1.w6 webtatic

remove the actual php 5 version:
# yum remove php*

Install the new php 7 version:
# yum install php70w php70w-cli php70w-common php70w-gd php70w-mbstring php70w-mysql php70w-pdo php70w-xml

Verify that all is good:
# php -v
PHP 7.0.11 (cli) (built: Sep 17 2016 12:52:22) ( NTS )
Copyright (c) 1997-2016 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies

Restart the web server:
# service httpd restart

Thank you to Shay Anderson for his guide.