Autocomplete Quotes

I would like to see a feature to autocomplete quotes in PHP this way: inside a quoted string, it would automatically insert \"\" when you type ", and ".." when you type " twice.

Example:

$string="Just a string";

Typing " once inside this string would give this:

$string="Just a \"\"string";

Typing " once more would change to:

$string="Just a ".."string";

PHP editor for Windows had this feature and it's the only one I miss in SublimeText :-).

Regards,
Daniel Wey