gmp_nextprime
(no version information, might be only in CVS)
gmp_nextprime -- Find next prime number
Description
resource
gmp_nextprime ( int a )
Return next prime number greater than a.
This function uses a probabilistic algorithm to identify primes and
chances to get a composite number are extremely small.
Example 1. gmp_nextprime() example
<?php
$prime1 = gmp_nextprime(10); // next prime number greater than 10
$prime2 = gmp_nextprime(-1000); // next prime number greater than -1000
echo gmp_strval($prime1) . "\n";
echo gmp_strval($prime2) . "\n";
?>
|
The printout of the above program is:
|