Instalar PHP7

Editar el archivo source.list

nano /etc/apt/sources.list

deb http://repozytorium.mati75.eu/raspbian jessie-backports main contrib non-free

sudo gpg --keyserver pgpkeys.mit.edu --recv-key CCD91D6111A06851

sudo apt-get update

Installar Apache2 y PHP7

apt-get install apache2 php7.0 php7.0-curl php7.0-gd php7.0-imap php7.0-json php7.0-mcrypt php7.0-mysql php7.0-opcache php7.0-xmlrpc libapache2-mod-php7.0