latest version of PHP 5.6 on Debian
at 2018-08-23 03:09:00.
add the fallowing lines to /etc/apt/sources.list
deb http://packages.dotdeb.org wheezy-php56 all deb-src http://packages.dotdeb.org wheezy-php56 all
then
wget http://www.dotdeb.org/dotdeb.gpg wget http://www.dotdeb.org/dotdeb.gpg sudo apt-get update sudo apt-get install php5
or if you have it already installed:
apt-get dist-upgrade sudo service apache2 restart