gmp_sign
(PHP 4 >= 4.0.4, PHP 5)
gmp_sign -- Sign of number
Description
int
gmp_sign ( resource a )
Returns 1 if a is positive,
-1 if a is negative,
and 0 if a is zero.
例子 1. gmp_sign() example
<?php // positive echo gmp_sign("500") . "\n";
// negative echo gmp_sign("-500") . "\n";
// zero echo gmp_sign("0") . "\n"; ?>
|
The printout of the above program will be:
|