gmp_sign
(PHP 4 >= 4.0.4)
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.
Example 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:
1
-1
0
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