Make Random Number

function getRandomId($min = NULL, $max = NULL) {
       if (is_numeric($min) && is_numeric($max)) {
               return mt_rand($min, $max);
       else {
               return mt_rand();


  1. User Avatar
    Joe Masterson
    Permalink to comment#


    rand(1, 50)

    do the same thing?

    • User Avatar
      Permalink to comment#

      Yes, essentially, but mt_rand is much better and more “random” so to speak.

  2. User Avatar
    Aneek Mukhopadhyay
    Permalink to comment#

    mt_rand(0,99) do the same?

    I hope to get a perfect random number, I generally use,
    function rand_num() {
    $rand_num = md5(mt_rand(0,99) . mt_rand(99,9999). time());
    return $rand_num;

    To make some email validation or generating random hash I use it.

  3. User Avatar
    Permalink to comment#

    Wtf ? whats is the great of that function ?

  4. User Avatar
    Permalink to comment#

    Well PHP 7 have updated rand/mt_rand to be even better, before they use the server system (most linux ) to generate random, but now it on it’s own core

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