PHP integer exponentiation (super large numbers)

Using PHP I want开发者_如何学Go to do millions of 2^n exponentiation but so far I only got up to n^1023 before PHP printed INF.

Any ideas?

As Greg said, BC Math is fine, but if you really need efficiency, try GMP instead.

You can use the BC Math functions:

  $num = bcpow(2, 1000000); // Takes a few seconds to run!