unsinged integer

Hi all,

I like to create an RFC to add an unsinged integer type for the
following purposes:

• higher max value
  • DBs already allow UNSIGNED INT/BIGINT which is a farce to work with
    in PHP
• better support pack/unpack unsigned integers from/to PHP using the
  un/pack functions
• simplified right shift of unsinged integers because PHP "safes" the
  sing bit on singed integers which leads to bugs or overcomplicated code
  if you need that bit for others than a sign
• if a parameter type-hint or similar functionality will be implemented
  this type will be very useful, too. Else it will be also useful to make
  sure you have no negative integer by simply converting to it.

What do you think?
(Does it worth the expense for a RFC?)

Marc