[PATCH] Add eglot-alternatives for PHP

[USAMI Kenta <zonuexe@zonu.me>]

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Hi all,

This patch adds two alternate servers that take precedence over 
php-language-server registered in eglot-server-programs.

php-language-server has been abandoned since 2018 and is obsolete.
https://github.com/felixfbecker/php-language-server

Phpactor is a free software language server implementation for PHP.
https://github.com/phpactor/phpactor

Intelephense is a proprietary one, but many PHP programmers already use it.
https://intelephense.com/

This patch is same as https://github.com/joaotavora/eglot/pull/1105
I have assigned the copyright to FSF.

Best regards,

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From e8fbe1dbd24d818569a72c671004501208f74a45 Mon Sep 17 00:00:00 2001
From: USAMI Kenta <zonuexe+tadsan@zonu.me>
Date: Fri, 11 Nov 2022 22:57:06 +0900
Subject: [PATCH] Add eglot-alternatives for PHP

---
 eglot.el | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lisp/progmodes/eglot.el b/lisp/progmodes/eglot.el
index 901bf30d..cdf54660 100644
--- a/lisp/progmodes/eglot.el
+++ b/lisp/progmodes/eglot.el
@@ -190,8 +190,10 @@ chosen (interactively or automatically)."
                                  . ("typescript-language-server" "--stdio"))
                                 (sh-mode . ("bash-language-server" "start"))
                                 ((php-mode phps-mode)
-                                 . ("php" "vendor/felixfbecker/\
-language-server/bin/php-language-server.php"))
+                                 . ,(eglot-alternatives
+                                     '(("phpactor" "language-server")
+                                       ("intelephense" "--stdio")
+                                       ("php" "vendor/felixfbecker/language-server/bin/php-language-server.php"))))
                                 ((c++-mode c-mode) . ,(eglot-alternatives
                                                        '("clangd" "ccls")))
                                 (((caml-mode :language-id "ocaml")