Phoenix 使用 Elixir 1.5+ 撰寫，所以需要相關的依賴，包括 Erlang 18+。
$ elixir -v Erlang/OTP 21 [erts-10.3] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:1] [hipe] [dtrace] Elixir 1.8.1 (compiled with Erlang/OTP 21)
而 Phoenix 相關的程式碼，會需要透過 Hex 下載，所以必須先安裝 Hex：
接著再從 Hex 下載 Phoenix archive：
mix archive.install hex phx_new
裝完後，Mix 將會多下面幾個指令：
mix local.phx # Updates the Phoenix project generator locally mix phx.new # Creates a new Phoenix v1.4.3 application mix phx.new.ecto # Creates a new Ecto project within an umbrella project mix phx.new.web # Creates a new Phoenix web project within an umbrella project
Initial Project 使用 phx.new 或 phx.new.web 差異不大，只差前者是全新專案，後者則是用在 Umbrella Project 下。因 Phoenix 對 app 名稱有嚴格要求，所以如果希望目錄名跟 app 名稱不同的話，可以用 --app 指定 app 名，而第一個參數則是目錄名稱
此外，如果不需要用 Ecto，可以加上 --no-ecto 參數；不需要 Webpack，可以加上 --no-webpack 參數。
參考
這是建立一個 newbie 專案的歷程，因單純只是新手練習，所以把 Ecto 和 Webpack 都先移除
$ mix phx.new --no-ecto --no-webpack --app newbie phoenix-newbie * creating newbie/config/config.exs * creating newbie/config/dev.exs * creating newbie/config/prod.exs * creating newbie/config/prod.secret.exs * creating newbie/config/test.exs * creating newbie/lib/newbie/application.ex * creating newbie/lib/newbie.ex * creating newbie/lib/newbie_web/channels/user_socket.ex * creating newbie/lib/newbie_web/views/error_helpers.ex * creating newbie/lib/newbie_web/views/error_view.ex * creating newbie/lib/newbie_web/endpoint.ex * creating newbie/lib/newbie_web/router.ex * creating newbie/lib/newbie_web.ex * creating newbie/mix.exs * creating newbie/README.md * creating newbie/.formatter.exs * creating newbie/.gitignore * creating newbie/test/support/channel_case.ex * creating newbie/test/support/conn_case.ex * creating newbie/test/test_helper.exs * creating newbie/test/newbie_web/views/error_view_test.exs * creating newbie/lib/newbie_web/gettext.ex * creating newbie/priv/gettext/en/LC_MESSAGES/errors.po * creating newbie/priv/gettext/errors.pot * creating newbie/lib/newbie_web/controllers/page_controller.ex * creating newbie/lib/newbie_web/templates/layout/app.html.eex * creating newbie/lib/newbie_web/templates/page/index.html.eex * creating newbie/lib/newbie_web/views/layout_view.ex * creating newbie/lib/newbie_web/views/page_view.ex * creating newbie/test/newbie_web/controllers/page_controller_test.exs * creating newbie/test/newbie_web/views/layout_view_test.exs * creating newbie/test/newbie_web/views/page_view_test.exs * creating newbie/priv/static/css/app.css * creating newbie/priv/static/css/phoenix.css * creating newbie/priv/static/js/app.js * creating newbie/priv/static/robots.txt * creating newbie/priv/static/js/phoenix.js * creating newbie/priv/static/images/phoenix.png * creating newbie/priv/static/favicon.ico Fetch and install dependencies? [Yn] Y * running mix deps.get * running mix deps.compile We are almost there! The following steps are missing: $ cd newbie Start your Phoenix app with: $ mix phx.server You can also run your app inside IEx (Interactive Elixir) as: $ iex -S mix phx.server