Introduce ‘C-c C-w’ to toggle Subword Mode

Programmers who use cameCase may prefer to use Subword Mode. The keys
‘C-c C-w’ exist in cc-mode, performing the exact same behavior.
Because we have gradually move towards using cc-mode as the foundation
of new features it seems reasonable to introduce this change.

The source code contains a URL to the official GNU Emacs manual here
it explains exactly what Subword Mode does.

GitHub-Issue: 89

Author: Eric James Michael Ritz

php-mode.el

@@ -11,7 +11,7 @@
 (defconst php-mode-version-number "1.10"
   "PHP Mode version number.")
 
-(defconst php-mode-modified "2013-05-24"
+(defconst php-mode-modified "2013-06-07"
   "PHP Mode build date.")
 
 ;;; License
@@ -633,6 +633,17 @@ This is was done due to the problem reported here:
     ;; are more likely to expect.
     (define-key map (kbd "C-M-h") 'mark-defun)
 
+    ;; Many packages based on cc-mode provide the 'C-c C-w' binding
+    ;; to toggle Subword Mode.  See the page
+    ;;
+    ;;     https://www.gnu.org/software/emacs/manual/html_node/ccmode/Subword-Movement.html
+    ;;
+    ;; for more information about Submode Word.
+    (if (boundp 'subword-mode)
+        (if subword-mode
+            (subword-mode nil)
+          (subword-mode t)))
+
     (define-key map [(control c) (control f)] 'php-search-documentation)
     (define-key map [(meta tab)] 'php-complete-function)
     (define-key map [(control c) (control m)] 'php-browse-manual)