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PHP Manual :: Examples



Predefined Constants || GMP Functions || GMP || PHP Manual

Example #1 Factorial function using GMP

<?php
function fact($x
{
    
$return 1;
    for (
$i=2$i <= $x$i++) {
        
$return gmp_mul($return$i);
    }
    return 
$return;
}

echo 
gmp_strval(fact(1000)) . "\n";
?>

This will calculate factorial of 1000 (pretty big number) very fast.



Predefined Constants || GMP Functions || GMP || PHP Manual
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