#+TITLE:   lang/php
#+DATE:    January 16, 2017
#+SINCE:   v1.3
#+STARTUP: inlineimages nofold

* Table of Contents :TOC_3:noexport:
- [[#description][Description]]
  - [[#maintainers][Maintainers]]
  - [[#module-flags][Module Flags]]
  - [[#plugins][Plugins]]
- [[#prerequisites][Prerequisites]]
  - [[#php][PHP]]
    - [[#macos][MacOS]]
    - [[#arch-linux][Arch Linux]]
    - [[#opensuse][openSUSE]]
  - [[#dependencies][Dependencies]]
- [[#features][Features]]
  - [[#lsp-support][LSP Support]]
  - [[#phpunit][PHPUnit]]
  - [[#composer][Composer]]
- [[#configuration][Configuration]]
  - [[#docker-compose][Docker Compose]]
- [[#troubleshooting][Troubleshooting]]
  - [[#im-missing-functionality-on-lsp-mode]["I'm missing functionality on lsp-mode"]]

* Description
This module adds support for PHP 5.3+ (including PHP7).

+ ctags-based code completion (~company-php~ and ~phpctags~)
+ eldoc support (~ac-php~ and ~php-extras~)
+ REPL (~php-boris~)
+ Code refactoring commands (~php-refactor-mode~)
+ Unit-test commands (~phpunit~)
+ Support for ~laravel~ and ~composer~ projects (with project-specific snippets)
+ Shortcuts for composer commands
+ [[../../editor/file-templates/templates/php-mode][File templates]]
+ [[https://github.com/hlissner/doom-snippets/tree/master/php-mode][Snippets]]

#+begin_quote
PHP was the first programming language I got paid to code in, back in the
Cretaceous period (2003). My sincerest apologies go out to all the programmers
who inherited my earliest PHP work. I know you're out there, writhing in your
straitjackets.

Save a programmer today. Stop a friend from choosing PHP as their first
language.
#+end_quote

** Maintainers
This module has no dedicated maintainers.

** Module Flags
+ =+hack= Add support for the [[https://hacklang.org/][Hack dialect of PHP]] by Facebook.
+ =+lsp= Enable LSP support through phpactor or intelephense. Requires the ~:tools
  lsp~ module and the [[https://phpactor.readthedocs.io/en/develop/usage/standalone.html][phpactor server]] to be installed on your system.
** Plugins
+ [[https://github.com/tomterl/php-boris][async]]
+ [[https://github.com/tomterl/php-boris][php-boris]]
+ [[https://github.com/arnested/php-extras][php-extras]]
+ [[https://github.com/emacs-php/php-mode][php-mode]]
+ [[https://github.com/keelerm84/php-refactor-mode.el][php-refactor-mode]]
+ [[https://github.com/nlamirault/phpunit.el][phpunit]]
+ [[https://github.com/emacs-php/composer.el][composer.el]]
+ =+hack=
  + [[https://github.com/hhvm/hack-mode][hack-mode]]
+ =+lsp=
  + [[https://github.com/emacs-php/phpactor.el][phpactor]]
  + [[https://github.com/emacs-php/phpactor.el][company-phpactor]]
+ =:editor format=
  + [[https://github.com/OVYA/php-cs-fixer][php-cs-fixer]]

* Prerequisites
** PHP
To get started with PHP, you'll need ~php~ (5.3+) and ~composer~.

Note for =+lsp=:
1. In order to make full use of phpactor server, ~php~ (7.3+) is recommended.
2. If you use intelephense, ~node~ and ~npm~ are needed.

*** MacOS
PHP 5.5 comes prepackaged with newer versions of MacOS. These instructions are
provided for reference:

#+begin_src sh :tangle (if (doom-system-os 'macos) "yes")
brew tap homebrew/homebrew-php
brew install php71  # or php53, php54, php55
brew install composer

# If you use intelephense:
brew install node
brew install npm
#+end_src

*** Arch Linux
#+begin_src sh :dir /sudo:: :tangle (if (doom-system-os 'arch) "yes")
sudo pacman --needed --noconfirm -S php composer  # or php53, php54, php55

# If you use intelephense:
sudo pacman -S nodejs npm
#+end_src

*** openSUSE
#+begin_src sh :dir /sudo::
sudo zypper install php-composer

# If you use intelephense:
sudo zypper install nodejs npm
#+end_src

** Dependencies
This module has no required dependencies, but it has a couple optional ones.

+ ~boris~ (REPL)
+ ~phpctags~ (better code completion)
+ ~phpunit~ (unit test commands)
+ ~php-cs-fixer~ and ~@prettier/plugin-php~ (for code formatting)
+ ~phpactor~ (for LSP if intelephense isn't desired)

#+begin_src sh
composer global require \
    d11wtq/boris \
    phpunit/phpunit \
    techlivezheng/phpctags \
    friendsofphp/php-cs-fixer \
    phpactor/phpactor

# Needed by php-cs-fixer, otherwise you'll get "Couldn't resolve parser
# 'php'" errors
npm install -g @prettier/plugin-php
#+end_src

You must ensure that ~~/.composer/vendor/bin~ is in ~PATH~, so these executables are
visible to Emacs:

#+begin_src sh
# place this in your profile file, like ~/.bash_profile or ~/.zshenv
export PATH="~/.composer/vendor/bin:$PATH"
#+end_src

You may also need to regenerate your envvar file by running ~doom env~ on the
command line.

*NOTE* phpactor doesn't have to be installed via =composer=, just has to exist in
your =$PATH=.

* Features
** LSP Support
There are a number of currently supported LSP servers:

+ [[https://emacs-lsp.github.io/lsp-mode/page/lsp-intelephense/][Intelephense]] (_Recommended_)
+ [[https://emacs-lsp.github.io/lsp-mode/page/lsp-phpactor/][phpactor]]
+ [[https://emacs-lsp.github.io/lsp-mode/page/lsp-serenata/][Serenata]]
+ [[https://emacs-lsp.github.io/lsp-mode/page/lsp-php/][felixbecker]] (Considered unsupported)

Intelephense is currently the only server that supports automatic installation,
which will trigger either when you open a PHP project or manually invoke
=lsp-install-server= through =M-x=.

The others have to be installed manually and added to your =$PATH=.

** PHPUnit
This module provides an interface to PHPUnit through a number of commands as
detailed below. By default, it loads configuration from the root ~phpunit.xml~.

+ ~phpunit-current-project~ Launch all tests for the project
+ ~phpunit-current-class~ Launch all tests for the current class/fixture
+ ~phpunit-current-test~ Launch the current test at point

If for some reason, the default ~phpunit.xml~ is in a different location (or you
use the ~phpunit.xml.dist~ convention) , the path can be changed via
=phpunit-configuration-file=

#+begin_src emacs-lisp
(setq phpunit-configuration-file "phpunit.xml")
#+end_src

** Composer
This module provides several convenience methods for triggering composer
commands:

| Binding             | Function                        |
|---------------------+---------------------------------|
| ~<localleader> m c c~ | ~composer~                        |
| ~<localleader> m c i~ | ~composer-install~                |
| ~<localleader> m c r~ | ~composer-require~                |
| ~<localleader> m c u~ | ~composer-update~                 |
| ~<localleader> m c d~ | ~composer-dump-autoload~          |
| ~<localleader> m c s~ | ~composer-run-scripts~            |
| ~<localleader> m c v~ | ~composer-run-vendor-bin-command~ |
| ~<localleader> m c o~ | ~composer-find-json-file~         |
| ~<localleader> m c l~ | ~composer-view-lock-file~         |

These are all invokable via =M-x= too.

* Configuration
** Docker Compose
A lot of projects rely on running inside docker compose (ie Laravel), and as
such a minor mode has been configured to attempt to run tests inside the =php-fpm=
(by default) container.

This mode is disabled by default, to opt-in set =+php-run-tests-in-docker= to =t= in
your config. If this is done during Emacs running, you will also have to reload
=php-mode= (i.e. through =M-x php-mode=)

If you wish to specify a different container, modify the
~+php-default-docker-container~ variable (ideally inside a ~.dir-locals.el~ file)

#+begin_src emacs-lisp
((php-mode . ((+php-default-docker-container . "php-octane"))))
#+end_src

* Troubleshooting
** "I'm missing functionality on lsp-mode"
Unfortunately, [[https://intelephense.com/][intelephense]] currently operates under a "freemium" model, and as
such requires a license for extended features. Once purchased, this can be
(insecurely) added directly to your config:

#+begin_src emacs-lisp
(setq lsp-intelephense-licence-key "<key>")
#+end_src

A more recommended approach would be to utilise Emacs' own ~auth-sources~ for
storing authentication info, which can also be encrypted.

Create a file in your home directory (which can optionally be encrypted, verify
your ~auth-sources~ has the correct values) called ~~/.authinfo~

#+begin_src
machine * login intelephense password <key>
#+end_src

And add the following to your config

#+begin_src emacs-lisp
(defun my-fetch-password (&rest params)
  (require 'auth-source)
  (let ((match (car (apply #'auth-source-search params))))
    (if match
        (let ((secret (plist-get match :secret)))
          (if (functionp secret)
              (funcall secret)
            secret))
      (error "Password not found for %S" params))))

(setq lsp-intelephense-license-key (my-fetch-password :user intelephense))
#+end_src