As I use composer packages more and more I need to switch between php versions used in terminal. Some notes here for myself.
which php– where php is installed
php -v– which php is currently in use in terminal
ls -la /usr/bin/php*– which php versions are installed in the system
Install php on Ubuntu
sudo update-alternatives --config php – see options and switch between versions.
For installation I took commands from this instruction.
sudo apt install software-properties-common
sudo add-apt-repository ppa:ondrej/php
Install php7.4 with few common PHP modules (also Digital Ocean post)
sudo apt-get install -y php7.4 php7.4-cli php7.4-json php7.4-common php7.4-mysql php7.4-zip php7.4-gd php7.4-mbstring php7.4-curl php7.4-xml php7.4-bcmath
Digital Ocean gives following suggestions for packages:
sudo apt-get install -y php8.1 php8.1-cli php8.1-common php8.1-mysql php8.1-zip php8.1-gd php8.1-mbstring php8.1-curl php8.1-xml php8.1-bcmath
For uninstalling just use:
sudo apt remove php7.4 etc or the
php -m to list all loaded PHP modules.
sudo apt autoremove
Composer broke down
StackOverflow solution and install composer the old way.