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PHP : Function Reference : GMP Functions : gmp_sign

gmp_sign

Sign of number (PHP 4 >= 4.0.4, PHP 5)
int gmp_sign ( resource a )

Example 813. gmp_sign() example

<?php
// positive
echo gmp_sign("500") . "\n";

// negative
echo gmp_sign("-500") . "\n";

// zero
echo gmp_sign("0") . "\n";
?>

The above example will output:

1
-1
0

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