Description
resource 
gmp_sub ( resource a, resource b)
     Subtracts b from a
     and returns the result.
    
| 例子 1. gmp_sub() example | 
<?php$sub = gmp_sub("281474976710656", "4294967296"); // 2^48 - 2^32
 echo gmp_strval($sub) . "\n";
 ?>
 | 
 
      The printout of the above program will be:
      |