This tutorial will guide you to upgrade PHP to 7.4 from any past versions like 5.6 or 7.0.
So you know you already understand the time for 5.6 and 7.0 passed out months ago.
So let us plan to upgrade PHP to the latest ie 7.4. Which comes with several safety stains. As a mighty upgrade strategy, Always Backup 100% first. So keep everything backup accompanied by databases.
At Ubuntu, with my particular experience, before starting any advance, always start with 2 commands.
1) Become Sudo user with the command “sudo su” and then
apt-get update apt-get upgrade
2) Now time to include “Ondrej PPA”
sudo apt-get install software-properties-common sudo add-apt-repository ppa:ondrej/php apt-get update
3) Now install PHP and it’s Extensions.
apt-get install php7.4
apt-get install libapache2-mod-php7.4
sudo apt-get install php7.4 php7.4-cli php7.4-common
sudo apt-get install php7.4-json php7.4-opcache
sudo apt-get install php7.4-mysql
sudo apt-get install php7.4-bcmath php7.4-xml
sudo apt-get install php7.4-curl php7.4-imap php7.4-gd
4) Now time to modify php.ini to add server execution
memory_limit ( 40 - 50 % of Memory),
max_file_uploads (20 - 50),
post_max_size (40 - 50 % of Memory),
max_execution_time (3600) ,
upload_max_filesize ( 40 - 50 % of Memory),
max_input_time = 1000
5) Now disable old PHP and enable a new PHP version
a2dismod php5.6 or a2dismod php7.0 a2enmod php7.4
6) Time to restart Apache
Service apache2 restart
7) Now type php -v or php –version
You should get a message like this
PHP 7.4.5-1+ubuntu20.04.1+deb.sury.org+1 (cli) (built: May 3 2019 10:00:24) ( NTS )
Copyright (c) 1997-2018 The PHP Group Zend Engine v3.3.5, Copyright (c) 1998-2018 Zend Technologies with Zend OPcache v7.2.5-1+ubuntu20.04.1+deb.sury.org+1, Copyright (c) 1999- 2018, by Zend Technologies
As you already have seen, you have PHP 7.4, go to the webroot of server ie /var/www/html, Create a file info.php.
Put this content into this file
Now reach to this file via browser-ie https://mydomain/info.php
So your command line PHP (PHP-CLI) and PHP on the browser must be the same version. ie php7.4 in our case.
Now if you want to use different PHP for different websites, Go this article.
“To be summarised, Keeping sustained upgrades of software and servers, pushing you ahead in the set-to, as new upgrades come with protection upgrades and patches. Also, It has seen considerable speed improvements after upgrades.”
Anyone Update PHP 7.4 then Click this url : https://www.php.net/eol.php