Generating a Draw

[14zero]

If have been trying to figure out how to dynamically create a draw.

team1 v team2
team3 v team 4 etc.

I have 8 teams and am really stumped

any ideas?

[TTT]

<?
$teams = array();
$c = "";
for($a=0;$a<9;$a++) {
  $b = rand(1,8);
  $cr = "team".$b;	
     if(array_key_exists($cr,$teams)) {
	$a--; // if exists step back and continue loop
     } else {

    $teams[$cr] = "";      
    if(count($teams) == 8) {
        $a += 1000;  // break loop
    }     
 }
}


$a = 0;
while (list($key) = each($teams)) {
    echo "$key \n";
  if(fmod($a,2) == 0 || $a== 0 ) {
    echo " vs ";
  } else {
     echo "<br>";
  } 
$a++;
}

?>