How to install php7 on Ubuntu: First install PHP7 and common extensions through the command "sudo apt-get install"; then enable Apache's php7.0 module; then start the php7.0-fpm process; and finally test whether PHP The installation is successful.
InstallationPHP7
Ubuntu 16.04 officially comes with PHP7, so you can use it directly apt-get to install.
(1) Install PHP7 and common extensions.
sudo apt-get install php7.0-fpm php7.0-mysql php7.0-common php7.0-mbstring php7.0-gd php7.0-json php7.0-cli php7.0-curl libapache2-mod-php7.0
(2) Enable Apache’s php7.0 module, and then restart Apache.
sudo a2enmod php7.0 sudo systemctl restart apache2
(3) Start the php7.0-fpm process.
sudo systemctl start php7.0-fpm
(4) Check the running status of php7.0-fpm.
systemctl status php7.0-fpm
(5) Test whether PHP is installed successfully
php -v 或 php --version
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