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(PHP 4 >= 4.0.4, PHP 5)
gmp_sub — Subtract numbers
Subtracts b from a and returns the result.
The number being subtracted from.
It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.
The number subtracted from a .
A GMP number resource.
Example #1 gmp_sub() example
<?php $sub = gmp_sub("281474976710656", "4294967296"); // 2^48 - 2^32 echo gmp_strval($sub) . "\n"; ?>
The above example will output:
281470681743360
gmp_strval
