参考转载：https://www.jianshu.com/p/1505f30290a5
1. Install PHP 7.2 on Ubuntu
PHP 7.2 stable version has been released. Use the following set of commands to enable PPA for PHP 7.2 in your Ubuntu system and install it. You can use this version for production use also.
sudo apt-get install python-software-properties
sudo add-apt-repository ppa:ondrej/php
sudo apt-get update
sudo apt-get install -y php7.2
Now use the following command to check installed php version on your system.
$ php -v
PHP 7.2.4-1+ubuntu18.04.1+deb.sury.org+1 (cli) (built: Apr 5 2018 08:53:57) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.2.4-1+ubuntu18.04.1+deb.sury.org+1, Copyright (c) 1999-2018, by Zend Technologies
2. Install PHP 7.1 on Ubuntu
Use the following set of commands to add PPA for PHP 7 in your Ubuntu system and install PHP 7.1 version.
sudo apt-get install python-software-properties
sudo add-apt-repository ppa:ondrej/php
sudo apt-get update
sudo apt-get install -y php7.1
Now use the following command to check installed php version on your system.
$ php -v
PHP 7.1.16-1+ubuntu18.04.1+deb.sury.org+1 (cli) (built: Apr 5 2018 08:47:00) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.1.16-1+ubuntu18.04.1+deb.sury.org+1, Copyright (c) 1999-2018, by Zend Technologies
3. Install PHP 7.0 on Ubuntu
Use the following set of commands to add PPA for PHP 7 in your Ubuntu system and install PHP 7.0 version.
sudo apt-get install python-software-properties
sudo add-apt-repository ppa:ondrej/php
sudo apt-get update
sudo apt-get install -y php7.0
Now use the following command to check installed php version on your system.
$ php -v
PHP 7.0.29-1+ubuntu18.04.1+deb.sury.org+1 (cli) (built: Apr 5 2018 08:34:50) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
with Zend OPcache v7.0.29-1+ubuntu18.04.1+deb.sury.org+1, Copyright (c) 1999-2017, by Zend Technologies
4. Install PHP 7 Modules
You may also need to install modules based on your application requirements. Use the following command to search available PHP 7 modules in the package repository.
sudo apt-cache search php7*
作者：霄峰
链接：https://www.jianshu.com/p/1505f30290a5
來源：简书