让APACHE2支持PHP7：

sudo apt-get install libapache2-mod-php

service apache2 restart

for php5.5

apt-get install  libapache2-mod-php5

PHP安装 sqlite 

sudo apt-get install php7.0-sqlite

sudo service apache2 restart

PHP安装 mbstring

sudo apt-get install php7.0-mbstring

sudo service apache2 restart

PHP安装 curl

sudo apt-get install php7.0-curl

sudo service apache2 restart