install php7.4 and composer ubuntu 18 code example
Example 1: composer install ubuntu
sudo curl -s https://getcomposer.org/installer | phpmixed
Example 2: composer install ubuntu
sudo mv composer.phar /usr/local/bin/composermixed
sudo curl -s https://getcomposer.org/installer | phpmixed
sudo mv composer.phar /usr/local/bin/composermixed