&reftitle.setup;
&reftitle.required;

PHP 7 is required by both the extension and the compatibility polyfill.

&reftitle.install;

The easiest way to install the extension is via PECL

    pecl install ds

You can also build directly from source:

    # Dependencies you might need to install
    # sudo apt-get install git build-essential php7.0-dev

    git clone https://github.com/php-ds/extension "php-ds"
    cd php-ds

    # Build and install the extension
    phpize
    ./configure
    make
    make install

    # Clean up the build files
    make clean
    phpize --clean

If you're on Windows, you can download a compiled .dll on PECL

If you're using Composer, it's highly recommended that you include php-ds/php-ds in your project so that your code is still functional in an environment where the extension is not installed. The extension will take priority if installed.