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LearnRemember

Update Php

Add repo ondrej

  
sudo apt-get update
sudo apt -y install software-properties-common
sudo add-apt-repository ppa:ondrej/php
sudo add-apt-repository ppa:ondrej/apache2
sudo apt-get update

Install php7.4

 
sudo apt -y install php7.4

php -v

php.ini

 
sudo gedit /etc/php/7.4/apache2/php.ini 

sudo diff -y -W 120 --suppress-common-lines 
    /etc/php/7.2/apache2/php.ini 
    /etc/php/7.4/apache2/php.ini 

Install some commonly used extensions

 
sudo apt install php7.4-common 
sudo apt install php7.4-mysql
sudo apt install php-curl

Enable php7.4

 
sudo a2dismod php7.2
sudo a2enmod php7.4

Restart apache

 
systemctl restart apache2

# sudo service apache2 restart 

Switch php versions

 
sudo a2dismod php7.4
sudo a2enmod php8.0
systemctl restart apache2