<?php$resource = gmp_sub ( "281474976710656", // resource $a "4294967296" // resource $b);// shows the result$string = gmp_strval($resource);?>
$resource = 'GMP instance' $string = '281470681743360'
'GMP instance'
'281470681743360'
#1
gmp_sub
("281474976710656", "4294967296")
#2
("5", "3")