(PHP 4 >= 4.0.4, PHP 5, PHP 7)
gmp_sign — Sign of number
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";
?>
Exemplul de mai sus va afișa:
1 -1 0