Snippet: Password generator for PHP

Really short snippet today - a password generator. Not much to say about this one since it's pretty simple. Pass it the length of password you want and optionally a string of valid characters it can use and it'll give you a random string back.

function GeneratePassword($len, $allowedchars = false)
{
  if ($allowedchars === false)
    $allowedchars = 'abcdefghijklmnopqrstuvwxyz01234567890';
  $retval = '';
  $maxidx = strlen($allowedchars)-1;
  for ($i = 0; $i < $len; $i++)
  {
    $retval .= $allowedchars[rand(0,$maxidx)];
  }
  return $retval;
}

I've got something a bit meatier lined up for the next snippet so I recommend subscribing to the RSS feed to make sure you don't miss it. As always comments, questions, suggestions and requests are welcomed.

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