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Install PHP 8.3 on Ubuntu 23.10

This version of PHP is actively supported.

Good news! PHP 8.3 is being actively supported through 31 Dec 2025. After that point, it's advisable to upgrade to the latest version, since the PHP team will only offer security-related support until 31 Dec 2027, at which point PHP 8.3 will be considered "end-of-life".

Installing PHP 8.3 on Ubuntu 23.10

Prerequisites

Ubuntu 23.10 installed and updated
Root or sudo access
Terminal access
Internet connection

Installation

Add the Ondřej Surý PPA repository:
```
sudo add-apt-repository ppa:ondrej/php
```
Update the package list:
```
sudo apt update
```
Install PHP 8.3:
```
sudo apt install php8.3
```

Install common PHP extensions (optional):

sudo apt install php8.3-common php8.3-mysql php8.3-xml php8.3-curl php8.3-gd php8.3-imagick php8.3-cli php8.3-dev php8.3-imap php8.3-mbstring php8.3-opcache php8.3-soap php8.3-zip php8.3-intl

Verification

Check the installed PHP version:
```
php -v
```
You should see output indicating PHP 8.3.x is installed.
Verify PHP configuration:
```
php -i
```
This will display detailed PHP configuration information.
Check installed PHP modules:
```
php -m
```
This will list all installed PHP modules.