Install Multi version of php on ubuntu

 

sudo apt-get install software-properties-common -y

sudo add-apt-repository ppa:ondrej/php   [ Ondrej for insatlling multiple php versions]

sudo apt-get update -y

sudo apt-get install php7.2 php7.2-fpm php7.2-mysql libapache2-mod-php7.2 libapache2-mod-fcgid  -y

sudo apt-get install php8.1 php8.1-fpm php8.1-mysql libapache2-mod-php8.1   -y

libapache2-mod-fcgid  only once if its already installed no need

a2enconf php8.2-fpm to make default

add in etc/apache2/sites-avialble ---- .conf

<FilesMatch \.php$>
      # For Apache version 2.4.10 and above, use SetHandler to run PHP as a fastCGI process server
      SetHandler "proxy:unix:/run/php/php8.1-fpm.sock|fcgi://localhost"
    </FilesMatch>

call to undefined function mb_strcut() laravel  install php8.2-mbstring