apt-get install autoconf libxml2-dev
 wget -O- https://downloads.php.net/~ab/php-7.0.0RC3.tar.gz
 tar xzvf php-7.0.0RC3.tar
 cd php-7.0.0RC3
 ./buildconf --force
 ./configure --prefix=$HOME/php7-RC03/usr --with-config-file-path=$HOME/php7-RC03/usr/etc
 make
 make install