Interfere with elisp mode

[twlz0ne]

Steps to reproduce

1. Open a .php file
2. Switch to *scratch*
3. Type glo

Expect

Actual

Environment

• macOS 10.11.6
• emacs 25.2 ~ 26.0

Configuration

;;; Usage: /path/to/emacs -nw -Q -l /path/to/test-ac-php.el

(toggle-debug-on-error)

(global-set-key (kbd "C-h") 'delete-backward-char)
(global-set-key (kbd "M-h") 'backward-kill-word)
(global-set-key (kbd "<f1>") 'help-command)
(define-key isearch-mode-map "\C-h" 'isearch-delete-char)

(setq package-user-dir (format "%s/elpa--test-ac-php" user-emacs-directory))
(setq package-archives
      '(("melpa" . "http://mirrors.tuna.tsinghua.edu.cn/elpa/melpa/")))
      ;; '(("melpa" . "https://melpa.org/packages/")))

(package-initialize)

(defmacro try-install (pkg)
  `(unless (package-installed-p ,pkg)
     (package-refresh-contents)
     (package-install ,pkg)))

(try-install 'ac-php)
(try-install 'company)
(try-install 'company-php)

(require 'cl)
(require 'php-mode)

(add-hook 'php-mode-hook
          '(lambda ()
             (require 'company-php)
             (company-mode t)
             (ac-php-core-eldoc-setup ) ;; enable eldoc
             (add-to-list 'company-backends 'company-ac-php-backend)))

(setq auto-mode-alist
      (append
       '(("\\.php" . php-mode)) auto-mode-alist))

(add-hook 'after-init-hook 'global-company-mode)
(run-hooks 'after-init-hook)

;;; test-ac-php.el ends here

[xcwen]

great for test code !!
make company-backends as local var

  (add-to-list 'company-backends 'company-ac-php-backend) => 

  (make-local-variable 'company-backends)
  (add-to-list 'company-backends 'company-ac-php-backend)