RE: [PHP] Picking random numbers
| From: | Maxim Maletsky | Date: | Tue, 21 Aug 2001 01:48:12 +0000 |
| Subject: | RE: [PHP] Picking random numbers | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-63597@lists.php.net to get a copy of this message | ||
Jason gave you a better way to do so, but if you want a "readable one", then
this code might work for you:
<?
function get_rand_array($from=0, $to=0, $keys=0) {
$rand = Array();
if(!$keys) Return $rand;
if($keys>=($to-$from)) {
Return $rand;
// Doesn't make much sense, does it?
}
while(True) {
$tmp_num = rand($from, $to);
if($keys>sizeof($rand)) {
if(!in_array($tmp_num, $rand))
$rand[] = $tmp_num;
}
else
Break;
}
Return $rand;
}
$random_array = get_rand_array(1, 200, 5);
echo '<PRE>';
print_r($random_array);
echo '</PRE>';
?>
regards,
Maxim Maletsky
www.PHPBeginner.com
-----Original Message-----
From: Seb Frost [mailto:seb@raceshoot.com]
Sent: Tuesday, August 21, 2001 10:13 AM
To: PHP General List
Subject: [PHP] Picking random numbers
OK I want to pick 5 random numbers from 1 to 200. Easy. They must all be
different. Not so easy.
And I don't want to use shuffle because of the comments on php.net about it.
- seb
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