Let's talk about how to install php7.2, 7.3, and 7.4 in multiple versions of Ubuntu

How to install php7.2, php7.3, php7.4 on Ubuntu? The following article will introduce to you how to install php7.2, 7.3, and 7.4 in multiple versions of Ubuntu. I hope it will be helpful to you!

# Works with any Ubuntu version and other Ubuntu-based versions. Ubuntu 14.04, Ubuntu 16.04, Ubuntu 18.04 or even Ubuntu 19.10.

Before you begin

PHP has different versions and distributions that you can use. The current PHP official website supports the oldest version (PHP 7.2) to PHP 7.3 and the latest version (PHP 7.4).
This blog provides instructions for PHP 7.4, PHP 7.2 (the default in Ubuntu 18.04), and the default PHP version (PHP 7) in the Ubuntu 16.04 repository.
It is recommended that you install PHP 7.3 because it is stable and has many improvements and new features. If you are still using PHP 7.1, you will definitely need to upgrade as soon as possible, as its security support will end at the end of 2019. 《PHP Video Tutorial》

Installing PHP 7.4 on Ubuntu 18.04 or 16.04

PHP 7.4 is the latest version of PHP with many improvements. These instructions are very similar to PHP 7.3.

Update Ubuntu

First, update your Ubuntu server:

apt-get update && apt-get upgrade

Add PHP Storage Repository

To install PHP 7.4, you need to use a third-party repository. We will use the repository of Ondřej Surý that we have used again before.

First, make sure you have the following packages installed so that you can add the repository:

apt-get install software-properties-common

Next, add the PHP repository from Ondřej:

add-apt-repository ppa:ondrej/php

Finally, update the installation Package:

apt-get update

Install PHP 7.4

After adding the repository, you can install PHP 7.4 using the following command:

apt-get install php7.4

This command will install additional packages:

• libapache2-mod-php7.4
• libaprutil1-dbd-sqlite3
• php7.4-cli
• php7.4-common
• php7.4-json
• php7.4-opcache
• php7.4-readline
• Wait...
  That's it. To check if PHP 7.4 is installed on the server, run the following command:

php -v

Install PHP 7.4 Modules

Depending on your application, you may need Other packages and modules. The most commonly used modules can be installed using the following command:

apt-get install php-pear php7.4-curl php7.4-dev php7.4-gd php7.4-mbstring php7.4-zip php7.4-mysql php7.4-xml

Just like that, you can start using PHP on your Ubuntu server.

Installing PHP 7.2 on Ubuntu 16.04

PHP 7.2 is a stable version of PHP with many new features, improvements, and bug fixes. If you want a better and faster website/app, you should definitely use it.

Update Ubuntu

Of course, as always, update Ubuntu first:

apt-get update && apt-get upgrade

Add PHP Storage Repositories

You can use third-party repositories to install the latest version of PHP. We will use Ondřej Surý’s repository.

First, make sure you have the following packages installed so that you can add the repository:

apt-get install software-properties-common

Next, add the PHP repository from Ondřej:

add-apt-repository ppa:ondrej/php

Finally, update the installation Package:

apt-get update

Install PHP 7.2

After adding the repository, you can install PHP 7.2 using the following command:

apt-get install php7.2

This command will install additional packages:

• ibapache2-mod-php7.2
• libargon2-0
• libsodium23
• libssl1.1
• php7.2-cli
• php7.2-common
• php7.2-json
• php7.2-opcache
• php7 .2-readline

That’s it. To check if PHP 7.2 is installed on your server, run the following command:

php -v

Install PHP 7.2 Module

According to your application, You may need other packages and modules. The most commonly used modules can be installed using the following command:

apt-get install php-pear php7.2-curl php7.2-dev php7.2-gd php7.2-mbstring php7.2-zip php7.2-mysql php7.2-xml

Just like that, you can start using PHP on your Ubuntu server.

Install PHP 7.2 on Ubuntu 18.04

Update Ubuntu

Again, before doing anything, you should update Server:

apt-get update && apt-get upgrade

Install PHP 7.2

Next, to install PHP 7.2 on Ubuntu 18.04, just run the following command:

apt-get install php

This command will install PHP 7.2 along with some other dependencies.

To verify that PHP is installed, run the following command:

php -v

You should get a response similar to the following:

PHP 7.2.3-1ubuntu1 (cli) (built: Mar 14 2018 22:03:58) ( NTS )

That’s it. PHP 7.2 is installed on Ubuntu 18.04 server.

Install PHP 7.2 Modules

These are the most common PHP 7.2 modules that are often used by php applications. You may need more or less, so check the requirements for the software you plan to use:

apt-get install php-pear php-fpm php-dev php-zip php-curl php-xmlrpc php-gd php-mysql php-mbstring php-xml libapache2-mod-php

To check all available PHP modules in Ubuntu, run:

apt-cache search --names-only ^php

在Ubuntu 18.04或16.04上安装PHP 7.3

PHP 7.3是一个稳定的版本，可以在服务器上安全使用。

更新Ubuntu

首先，更新你的Ubuntu服务器：

apt-get update && apt-get upgrade

添加PHP存储库

要安装PHP 7.3，您需要使用第三方存储库。我们将使用以前使用的OndřejSurý的存储库。

首先，请确保已安装以下软件包，以便可以添加存储库：

apt-get install software-properties-common

接下来，从Ondřej添加PHP存储库：

add-apt-repository ppa:ondrej/php

最后，更新安装包

apt-get update

安装PHP 7.3

添加存储库后，可以使用以下命令安装PHP 7.3：

apt-get install php7.3

此命令将安装其他软件包：

• libapache2-mod-php7.3
• libaprutil1-dbd-sqlite3
• php7.3-cli
• php7.3-common
• php7.3-json
• php7.3-opcache
• php7.3-readline
• 等等其他……
  就是这样。要检查服务器上是否安装了PHP 7.3，请运行以下命令：

php -v

安装PHP 7.3模块

根据你的应用程序，你可能需要其他软件包和模块。可以使用以下命令安装最常用的模块：

apt-get install php-pear php7.3-curl php7.3-dev php7.3-gd php7.3-mbstring php7.3-zip php7.3-mysql php7.3-xml

就这样。现在，你可以在Ubuntu服务器上开始使用PHP。

如何更改你使用的PHP版本

如果你在Ubuntu服务器上安装了多个PHP版本，则可以更改默认版本。

要将PHP 7.2设置为默认值，请运行：

update-alternatives --set php /usr/bin/php7.2

要将PHP 7.3设置为默认值，请运行：

update-alternatives --set php /usr/bin/php7.3

要将PHP 7.4设置为默认值，请运行：

update-alternatives --set php /usr/bin/php7.4

更多编程相关知识，请访问：编程视频！！

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