Welcome to today’s guide on how to install PHP 7.4 on Ubuntu 18.04/19.04/16.04. The PHP release 7.4.0RC1 has been made available for the developers, and users interested in testing and providing feedback for bug fixes and other software improvements. Please note that the PHP 7.4.0RC1 is not for use in Production. The expected official release date for GA is November 28, 2019.

PHP is a popular server scripting language known for creating dynamic and interactive Web pages. PHP is widely-used programming language in the Web. Use the steps below to install PHP 7.4 on Ubuntu 19.04/18.04/16.04.

Step 1: Add PHP PPA Repository

We’ll add ppa:ondrej/php PPA repository which has the latest build packages of PHP.

sudo apt-get update
sudo apt -y install software-properties-common
sudo add-apt-repository ppa:ondrej/php
sudo apt-get update

Step 2: Install PHP 7.4 on Ubuntu 18.04/19.04/16.04

Install PHP 7.4 on Ubuntu 18.04/19.04/16.04 using the command:

sudo apt -y install php7.4

Check version installed:

$ php -v
PHP 7.4.0beta4 (cli) (built: Aug 28 2019 11:41:49) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0-dev, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.0beta4, Copyright (c), by Zend Technologies

Use the next command to install additional packages:

sudo apt-get install php7.4-xxx

Example:

sudo apt-get install -y php7.4-{bcmath,bz2,intl,gd,mbstring,mysql,zip}

PHP configurations related to Apache is stored in /etc/php/7.4/apache2/php.ini

Using PHP 7.4 with Nginx on Ubuntu:

The installation of php on Ubuntu configures Apache. For users interested in running Nginx and PHP, you need to stop and disable Apache service.

sudo systemctl disable --now apache2

Then install fpm extension and nginx packages.

sudo apt-get install nginx php7.4-fpm

Nginx and fpm services should be running.

$ systemctl status php7.4-fpm nginx
● php7.4-fpm.service - The PHP 7.4 FastCGI Process Manager
   Loaded: loaded (/lib/systemd/system/php7.4-fpm.service; enabled; vendor preset: enabled)
   Active: active (running) since Mon 2019-09-16 17:09:41 UTC; 27s ago
     Docs: man:php-fpm7.4(8)
 Main PID: 25321 (php-fpm7.4)
   Status: "Processes active: 0, idle: 2, Requests: 0, slow: 0, Traffic: 0req/sec"
    Tasks: 3 (limit: 2362)
   CGroup: /system.slice/php7.4-fpm.service
           ├─25321 php-fpm: master process (/etc/php/7.4/fpm/php-fpm.conf)
           ├─25339 php-fpm: pool www
           └─25340 php-fpm: pool www

Sep 16 17:09:41 ubuntu18 systemd[1]: Starting The PHP 7.4 FastCGI Process Manager...
Sep 16 17:09:41 ubuntu18 systemd[1]: Started The PHP 7.4 FastCGI Process Manager.

● nginx.service - A high performance web server and a reverse proxy server
    Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
    Active: active (running) since Mon 2019-09-16 17:09:42 UTC; 6min ago
      Docs: man:nginx(8)
  Main PID: 25441 (nginx)
     Tasks: 2 (limit: 2362)
    CGroup: /system.slice/nginx.service
            ├─25441 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
            └─25442 nginx: worker process
 Sep 16 17:09:42 ubuntu18 systemd[1]: Starting A high performance web server and a reverse proxy server…
 Sep 16 17:09:42 ubuntu18 systemd[1]: nginx.service: Failed to parse PID from file /run/nginx.pid: Invalid argument
 Sep 16 17:09:42 ubuntu18 systemd[1]: Started A high performance web server and a reverse proxy server.

PHP FPM configuration file is /etc/php/7.4/fpm/pool.d/www.conf.

Enjoy using PHP 7.4 on Ubuntu 19.04/ Ubuntu 18.04 / Ubuntu 16.04 Linux system.

For other systems:

How To Install PHP 7.4 on Fedora

How To Install PHP 7.4 on CentOS 8 / RHEL 8

How To Install PHP 7.4 on CentOS 7

How To Install PHP 7.4 on Debian 10 / Debian 9