add more languages

"application/x-php" doesn't seem to be working for me. In addition, there are a lot of .php files around that contain php code mixed with html.

Can you merge "php" and "phtml" as the following?

```javascript
"php": {
   name: "PHP",
   mode: "php",
   mime: "application/x-httpd-php",
   fileExtensions: ["php", "php3", "php4", "php5", "phtm", "phtml", "ctp"]
},
```