* Install PHP 7.1 or higher and these PHP extensions (which are installed and

enabled by default in most PHP 7 installations): `Ctype`_, `iconv`_, `JSON`_,

`PCRE`_, `Session`_, `SimpleXML`_, and `Tokenizer`_;

* `Install Composer`_, which is used to install PHP packages;

* `Install Symfony`_, which creates in your computer a binary called ``symfony``

that provides all the tools you need to develop your application locally.

* `Install Composer`_, which is used to install PHP packages.

The ``symfony`` binary provides a tool to check if your computer meets these

Optionally, you can also `install Symfony`_. This creates a binary called

``symfony`` that provides all the tools you need to develop and run your

Symfony application locally.

The ``symfony`` binary provides a tool to check if your computer meets all

requirements. Open your console terminal and run this command:

..code-block::terminal