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Prime Number Script
Prime Number Script is generate a series of prime numbers, or find out if a particular number is prime.
Demo :
Example :
Select Number : 20
Following code is used to generate prime numbers if you need to copy and use to your website.
<?php
function listPrimes($end)
{
$sieve = range(2, $end);
$size = sizeof($sieve);
reset($sieve);
while (list($key, $val) = each($sieve))
{
for ($x=$key+1; $x<$size; $x++)
{
if ($sieve[$x] % $val == 0)
{
unset($sieve[$x]);
}
}
}
return $sieve;
}
echo implode(" ", listPrimes(100));
?>
function listPrimes($end)
{
$sieve = range(2, $end);
$size = sizeof($sieve);
reset($sieve);
while (list($key, $val) = each($sieve))
{
for ($x=$key+1; $x<$size; $x++)
{
if ($sieve[$x] % $val == 0)
{
unset($sieve[$x]);
}
}
}
return $sieve;
}
echo implode(" ", listPrimes(100));
?>
A prime number is a number that has only two divisors: itself and 1. There are quite a few ways to generate a sequence of prime numbers, but the method listed previously is one of the oldest (and also one of the most efficient).
Free Download Script :
If you need Prime Number Script click and download from following link.
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