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+1 vote
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asked in PHP by (26 points)
I was asked a question in my practical to check if a number is prime or not.

Can anyone help me? Thanks in advance

1 Answer

+1 vote
answered by (790 points)

This code will help you check if a number is prime or not:

<?php

function IsPrime($n) {
    for($x=2; $x<$n; $x++) {
      if($n % $x ==0) { return false;}
    }

return true;
}
$a = IsPrime(13);

echo $a ? 'This is a Prime Number.' :  'This is not a Prime Number.';

?>

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