Stupid Do While Loop

[Napster]

I have a Do, While Loop and it looks like this

do {

  $bh1 = rand(1,20);
  $bh2 = rand(1,20);
  $bh3 = rand(1,20);

}
while ($bh1 != $bh2 && $bh2 != $bh3 && $bh1 != $bh3);

mysql_query("INSERT INTO hb_lottery SET num1='$bh1', num2='$bh2', num3='$bh3'") or die(mysql_error());

Whenever I look in the database, two of the columns are always the same. But my do while loop should not allow that. I want this loop to generate 3 random numbers but none can be the same. How can I fix this to do this?

[Shrike]

Here's one way

<?php
$rand = array();
while(count($rand) < 3){
	$r = rand(1,20);
	if(!in_array($r, $rand)){
		$rand[] = $r;
	}
}
print_r($rand);
?>

[Weedpacket]

Originally posted by Napster

while ($bh1 != $bh2 && $bh2 != $bh3 && $bh1 != $bh3);

But my do while loop should not allow that. [/B]

Actually, your while loop requires that: it will continue looping until one of the numbers equals one of the other numbers (if they're all different then your condition will be true, and so the loop reiterates).

[man]array_rand[/man] might be a useful function for you to look up.