hit:1 http://ng.archive.ubuntu.com/ubuntu lunar inrelease                       hit:2 http://ng.archive.ubuntu.com/ubuntu lunar-updates inrelease               hit:3 https://dl.google.com/linux/chrome/deb stable inrelease                   hit:4 http://ng.archive.ubuntu.com/ubuntu lunar-backports inrelease ign:5 https://ppa.launchpadcontent.net/ondrej/php/ubuntu lunar inrelease err:6 https://ppa.launchpadcontent.net/ondrej/php/ubuntu lunar release   404  not found [ip: 185.125.190.80 443] hit:7 http://ng.archive.ubuntu.com/ubuntu lunar-security inrelease reading package lists... done e: the repository 'https://ppa.launchpadcontent.net/ondrej/php/ubuntu lunar release' does not have a release file. n: updating from such a repository can't be done securely, and is therefore disabled by default. n: see apt-secure(8) manpage for repository creation and user configuration details.  or   “reading package lists… done building dependency tree reading state information… done e: unable to locate package php8.2 e: couldn’t find any package by glob ‘php8.2’ e: couldn’t find any package by regex ‘php8.2’” 

add-apt-repository ppa:ondrej/php 

sudo add-apt-repository --remove ppa:ondrej/php sudo apt update  

sudo nano /etc/apt/sources.list 

deb https://ppa.launchpadcontent.net/ondrej/php/ubuntu jammy main  

sudo apt update 

sudo apt install php8.3 

sudo update-alternatives --config php 

 sudo apt install php8.3-curl php8.3-gd php8.3-intl php8.3-simplexml php8.3-dom php8.3-mysql php8.3-mbstring php8.3-xml php8.3-gd php8.3-curl php8.3-mysqli php8.3-zip