우분투 PHP7 버전 선택해서 설치하는 방법

PHP7 PPA 추가

sudo add-apt-repository ppa:ondrej/php
sudo apt update

위 명령어로 PPA를 추가한 다음 저장소 정보를 업데이트합니다

sudo apt search php7.0
sudo apt install libapache2-mod-php7.0 php7.0 php7.0-common php7.0-cli libphp7.0-embed php7.0-bcmath php7.0-bz2 php7.0-cgi  php7.0-curl php7.0-dba php7.0-dev php7.0-enchant php7.0-gd php7.0-gmp php7.0-imap php7.0-intl php7.0-json php7.0-ldap php7.0-mbstring php7.0-mcrypt php7.0-mysql php7.0-opcache php7.0-phpdbg php7.0-pspell php7.0-readline php7.0-recode php7.0-snmp php7.0-soap php7.0-tidy php7.0-xml php7.0-xmlrpc php7.0-xsl php7.0-zip

또는 

apt -y install php7.0 php7.0-cli php7.0-fpm php7.0-common php7.0-mbstring php7.0-imap php7.0-json php7.0-ldap php7.0-mysqlnd php7.0-xmlrpc php7.0-memcache php7.0-memcached php7.0-geoip php7.0-curl php7.0-oauth php7.0-pdo php7.0-iconv php7.0-xml php7.0-soap php7.0-gd php7.0-mysql php7.0-opcache php7.0-bcmath php7.0-dev php-pear libgeoip-dev libapache2-mod-geoip libapache2-mod-php uwsgi-plugin-php libmcrypt-dev php7.0-bz2 php7.0-cgi php7.0-dba php7.0-enchant php7.0-gmp php7.0-mcrypt php7.0-snmp php7.0-zip php7.0-imagick