Just another BIG point to add to this, so far I've noticed PHP doesn't read Tab very well (or make that it doesn't read TAB, it reads spaces just; yet really even those are evil {opposite to live}; How are you meant to live when it takes a week for your site to load
)....
Been finding loads of spaces in Chinese/Japanese code, where the spaces don't show as spaces, ' ' if searched for..so I presume these are tabs, as they provided a double space and why was removing them to begin with....
Yet on doing so there is a considerable amount of relief in the time it takes too load, reason for saying relief is, because you could see the PHP struggling over certain files and the Tab's/spaces were the cause of these
.