Is Rand not random at all?

i playing around tonight , came following:

 

<?php     $mynumber = 0;     $numberflip = 0;     while ($mynumber < 9) {         $roll = rand(0,2);         $numberflip ++;              if ($roll == 1) {                  $mynumber ++;             }             elseif ($roll == 0) {                 $mynumber = 0;             }             else {                 $mynumber = 0;             }                         }     echo "<p>it took {$numberflip} flips!</p>"     ?> 

 

the issue - each time refresh page -  gives possibility of couple answers , keeps cycling through answers repeatedly in order.  (4,008 flips, 8,922, 1,421, 452, 18,417)

 

why on earth that?   shouldn't more random that?

have here http://php.net/manual/en/function.rand.php

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