Php/docs/function.gmp-sign
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gmp_sign
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
gmp_sign — Sign of number
Parameters
a
- Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to an int.
Return Values
Returns 1 if a
is positive,
-1 if a
is negative,
and 0 if a
is zero.
Examples
Example #1 gmp_sign() example
<?php// positiveecho gmp_sign("500") . "\n";// negativeecho gmp_sign("-500") . "\n";// zeroecho gmp_sign("0") . "\n";?>
The above example will output:
1 -1 0