Need a small coding help

Discussion in 'Programming' started by prep, Aug 24, 2009.

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  1. #1
    hello everyone!!!

    right now i am stuck in a logic of finding prime numbers using "recursion" functions..can anyone please help me out ...

    thanks
     
    prep, Aug 24, 2009 IP
    crivion likes this.
  2. crivion

    crivion Notable Member

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    #2
    function is_prime_number($i)
    {
    if($i % 2 != 1) return false;
    $d = 3;
    $x = sqrt($i);
    while ($i % $d != 0 && $d < $x) $d += 2;
    return (($i % $d == 0 && $i != $d) * 1) == 0 ? true : false;
    }
     
    crivion, Aug 24, 2009 IP
    prep likes this.
  3. webgig

    webgig Peon

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    #3
    How much for that?
     
    webgig, Aug 26, 2009 IP