[delian66]

The PHP team does this already ... it is a slow process, but I think in the right direction: http://php.net/manual/en/migration53.deprecated.php

[mgkimsal]

Not quite for the same reasons it seems. But, since they already do do this, why not take on standardizing function spacing? strpos would become str_pos, etc.

[wvenable]

Because there just isn't that much value in it.