repeating random links

[fris]

this function takes random links out of a file, i am trying to figure out how to make the links not repeat itself.

sometimes it displays the same link twice.

function random_links($file, $display)

{
$filenaam = $file . '.txt';
$f = file($filenaam);
srand((double)microtime()*1000000);
for($c=0; $c<=$display; $c++)
 {
  $i = rand(0,count($f)-1);
  list ($url, $desc) = split("\|", $f[$i]);
  $desc = rtrim($desc);
  echo '<a href="'.$url.'">'.$desc.'</a><br>';
 }
}

[bradgrafelman]

Instead of directly echo'ing the links, you could store them in an array, and then on each loop of the function, you'd use [man]in_array/man to see if the URL you're currently working with was already stored in the array. If so, get a different URL and repeat the process.