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This package auto-loads php-mode and invokes it for all .php[34], .phtml 
and .inc files.

You can invoke it manually by typing 
  M-X php-mode
in emacs or XEmacs.

If you want to associate php-mode with another extension. Add the following
to your .emacs file:

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

where .ext is the extension on your files.

For more information about php-mode and how-to make it compatible with 
html-mode, see http://php-mode.sf.net

// Pontus