1-1 update-php5.5 to 5.6

//add-apt-repository ppa:ondrej/php
apt-get update
apt-get   install php5.6 php5.6-fpm php5.6-mysql php5.6-gd php5.6-soap php5.6-mcrypt  php5.6-curl  php5.6-zip php5.6-xml libapache2-mod-php5.6  php5.6-mbstring
a2dismod php5
a2enmod php5.6
service apache2 restart