gmp_sign

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

gmp_signSign of number

Descrierea

gmp_sign ( GMP|int|string $num ) : int

Checks the sign of a number.

Parametri

num

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.

Valorile întoarse

Returns 1 if num is positive, -1 if num is negative, and 0 if num is zero.

Exemple

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

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