How to update php version in ubuntu

# Add the repository 'ppa:ondrej/php'
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:ondrej/php
sudo apt update

# Install PHP 7.2
sudo apt install -y php7.2 php7.2-cli libapache2-mod-php7.2
sudo apt install -y php-imagick php-gettext php-memcache php-apcu php-pear php-xml php-xmlrpc
sudo apt install -y php-memcached php-mysql php-intl php-mbstring php-curl php-gd
sudo apt install -y php7.2-common php7.2-mysql php7.2-cgi 
sudo apt install -y php7.2-curl php7.2-zip php7.2-mbstring php7.2-xmlrpc php7.2-gd php7.2-xml php7.2-xsl
sudo apt install -y php7.2-dev php7.2-bz2 php7.2-intl php7.2-json php7.2-opcache php7.2-readline 
sudo apt install -y php7.2-imap php7.2-pspell php7.2-recode php7.2-sqlite3 php7.2-tidy #php7.2-mcrypt

# Update the Apache's PHP version
sudo a2dismod php7.0
sudo a2enmod php7.2
sudo systemctl restart apache2.service

# Update the CLI PHP version
sudo update-alternatives --set php /usr/bin/php7.2