Re: [PHP] generate random ascii string

2001-09-01 Thread Sean C. McCarthy 

Hi, 

If you have random string including symbols just take them of with
regexp. Look at the manual for regular expresion functions. Hope it
helps.

Sean C. McCarthy
SCI, s.L. (www.sci-spain.com)


bill wrote:
 
 How can a random string of only letters and numbers be generated?
 
 I'm stumped so far on how to avoid including symbols.
 
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Re: [PHP] generate random ascii string

2001-09-01 Thread Philip Olson 

Hi Bill,

Here's a quick hack, should get you on your way :

function randomString($len)
{
global $seed;

  $tmp = '';

  $chars  = 'abcdefghijklmnopqrstuvwxyz';
  $chars .= strtoupper($chars);
  $chars .= '0123456789';

  if (empty($seed)) {
mt_srand ((float) microtime() * 100);
$seed = TRUE;
  }

  // weak error checking mechanism
  if ($len  1 || !is_numeric($len)) $len = 8;

  $chars_len = strlen($chars);  

  for ($a=1; $a = $len; $a++) {
$tmp .= $chars{mt_rand(0,$chars_len)};
  }

  return $tmp;
}


That was fun :)

Regards,
Philip Olson


On Sat, 1 Sep 2001, bill wrote:

 How can a random string of only letters and numbers be generated?
 
 I'm stumped so far on how to avoid including symbols.
 
 
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 To unsubscribe, e-mail: [EMAIL PROTECTED]
 For additional commands, e-mail: [EMAIL PROTECTED]
 To contact the list administrators, e-mail: [EMAIL PROTECTED]
 



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Re: [PHP] generate random ascii string

2001-09-01 Thread bill 

Philip,

With a few tweaks, it works great, thanks!

Here's what worked:

function randomString($len)
{
global $seed;

  $tmp = '';

  $chars  = 'abcdefghijklmnopqrstuvwxyz';
  $chars .= strtoupper($chars);
  $chars .= '0123456789';

  if (empty($seed)) {
mt_srand ((float) microtime() * 100);
$seed = TRUE;
  }

  // weak error checking mechanism
  if ($len  1 || !intval($len)) $len = 8;

  $chars_len = strlen($chars);

  for ($a=1; $a = $len; $a++) {
$tmp .= $chars[mt_rand(0,$chars_len)];
  }

  return $tmp;
}

Philip Olson wrote:

 Hi Bill,

 Here's a quick hack, should get you on your way :

 function randomString($len)
 {
 global $seed;

   $tmp = '';

   $chars  = 'abcdefghijklmnopqrstuvwxyz';
   $chars .= strtoupper($chars);
   $chars .= '0123456789';

   if (empty($seed)) {
 mt_srand ((float) microtime() * 100);
 $seed = TRUE;
   }

   // weak error checking mechanism
   if ($len  1 || !is_numeric($len)) $len = 8;

   $chars_len = strlen($chars);

   for ($a=1; $a = $len; $a++) {
 $tmp .= $chars{mt_rand(0,$chars_len)};
   }

   return $tmp;
 }

 That was fun :)

 Regards,
 Philip Olson

 On Sat, 1 Sep 2001, bill wrote:

  How can a random string of only letters and numbers be generated?
 
  I'm stumped so far on how to avoid including symbols.
 
 
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  PHP General Mailing List (http://www.php.net/)
  To unsubscribe, e-mail: [EMAIL PROTECTED]
  For additional commands, e-mail: [EMAIL PROTECTED]
  To contact the list administrators, e-mail: [EMAIL PROTECTED]
 


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