PHP 7.3 has been released, bringing some great new features to the language such as trailing commas in function calls, throwing errors when JSON parsing fails, array_key_first() / array_key_last() functions, and much more!

Here's a brief guide on how to install PHP 7.3 on Linux, Windows, and OS X:

Ubuntu

PHP 7.3 and commonly-used extensions can be installed by adding Ondřej Surý's PPA:

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

You can then install PHP 7.3 with all common extensions and SAPIs like so:

sudo apt-get install php7.3

Or you can specify individual packages like this instead:

sudo apt-get install php7.3-cli php7.3-fpm php7.3-bcmath php7.3-curl php7.3-gd php7.3-intl php7.3-json php7.3-mbstring php7.3-mysql php7.3-opcache php7.3-sqlite3 php7.3-xml php7.3-zip

This method is supported on:

Ubuntu 14.04 (Trusty)

Ubuntu 16.04 (Xenial)

Ubuntu 18.04 (Bionic)

Ubuntu 18.10 (Cosmic)

Debian

Ondřej Surý also provides PHP 7.3 packages for Debian 8 (Jessie) and Debian 9 (Stretch). Add the repository with these commands:

sudo apt-get install -y apt-transport-https lsb-release ca-certificates wget sudo wget -O /etc/apt/trusted.gpg.d/php.gpg https://packages.sury.org/php/apt.gpg echo "deb https://packages.sury.org/php/ $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/php.list sudo apt-get update

And then either install PHP 7.3 with all the defaults like this:

sudo apt-get install php7.3

Or list the exact packages you want instead:

sudo apt-get install php7.3-cli php7.3-fpm php7.3-bcmath php7.3-curl php7.3-gd php7.3-intl php7.3-json php7.3-mbstring php7.3-mysql php7.3-opcache php7.3-sqlite3 php7.3-xml php7.3-zip

CentOS / RHEL & Fedora

Remi's RPM repository has RPMs for the latest PHP 7.3 builds. Refer to Remi's blog post on how to best install this depending on which OS version you're running.

Mac OS X

PHP 7.3 can be installed easily using Liip's php-osx tool - simply run the following in your terminal:

curl -s https://php-osx.liip.ch/install.sh | bash -s 7.3

Or, if you prefer using Homebrew:

Windows

Windows users can find the PHP 7.3 distributions on the windows.php.net website.

Additional instructions for installing the distribution can be found in this blog post: http://kizu514.com/blog/install-php7-and-composer-on-windows-10/

phpbrew

phpbrew is an amazing tool that helps you download, compile, and manage multiple versions of PHP on your machine. Assuming you've already followed the installation directions and have phpbrew up-and-running, PHP 7.3.0 can be installed with two easy commands:

phpbrew update phpbrew install -j $(nproc) 7.3.0 +default

Docker

Official PHP images can be found on Docker Hub. Use the php:7.3 tag for your base images.

Docker is also a great way to tinker with PHP 7.3 in a local interactive shell without installing it first! Simply run this in your terminal: