Installing PHP 8.4 on Ubuntu 24.04 via Sury Repository

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PHP 8.4 is a development/pre-release version of PHP introducing new features and performance improvements. This guide explains how to install PHP 8.4 on Ubuntu 24.04 (Noble Numbat) using the Sury APT repository, which maintains up-to-date PHP builds.

PHP 8.4 is under active development (alpha/beta as of May 2025). Do not use it in production environments.

Prerequisites

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Ensure your system is up to date and has required packages installed.

Update System Packages

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apt update && apt upgrade -y

Install Required Packages

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apt install -y apt-transport-https lsb-release ca-certificates curl gnupg2

Use Ondřej's Launchpad PPA instead (more stable for Ubuntu)

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Ondřej also maintains a Launchpad PPA, which is much more stable and intended for Ubuntu:

add-apt-repository ppa:ondrej/php

Update Package Index

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apt update

Install PHP 8.4 and Extensions

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Install PHP 8.4 with commonly used extensions.

apt install -y php8.4 php8.4-cli php8.4-mysql php8.4-zip php8.4-xml php8.4-gd php8.4-curl php8.4-mbstring php8.4-bcmath php8.4-soap php8.4-readline php8.4-intl php8.4-common

Add or remove extensions as needed for your applications.

Verify PHP Installation

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Check the PHP version:

php -v

Expected output should begin with:

root@vps:~# php -v
PHP 8.4.7 (cli) (built: May  9 2025 06:54:31) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.4.7, Copyright (c) Zend Technologies
    with Zend OPcache v8.4.7, Copyright (c), by Zend Technologies

Conclusion

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You’ve now successfully installed PHP 8.4 on Ubuntu 24.04 using the Sury APT repository.