I need to create batches of randomly generated usernames and passwords. To start off, I have:
$validuchars='abcdefghijkmnopqrstuvwxyz'; $validpchars='abcdefghijkmnopqrstuvwxyz23456789'; $lenu=strlen($validuchars)-1; $lenp=strlen($validpchars)-1; The first method I came up with was: $uid=''; for($i=8;$i;$i--) $uid.=substr($validchars,mt_rand(0,$lenu),1); $pwd=''; for($i=8;$i;$i--) $pwd.=substr($validchars,mt_rand(0,$lenp),1); But I'm wondering if there's any significant benefit to this instead: for( $uid=''; strlen($uid)<8; $uid.=substr($validuchars,mt_rand(0,$lenu),1) ); for( $pwd=''; strlen($pwd)<8; $pwd.=substr($validpchars,mt_rand(0,$lenp),1) ); I can't see any difference in speed. Does the savings of the $i variable have any signficance at all? Another thing I was thinking of doing was making more pronouncable usernames with something like: $cons="bcdfghjklmnpqrstvwxyz"; $vowels="aeiouy"; $lenv=strlen($vowels)-1; $lenc=strlen($cons)-1; $uid=""; for($i=4;$i;$i--) $uid.=substr($cons,mt_rand(0,$lenc),1) . substr($vowels,mt_rand(0,$lenv),1); Any thoughts? Incidentally, I'm guaranteeing uniqueness of usernames with a unique index in the MySQL table that stores this stuff. Including the INSERT, I can create about 100000 of these in 60 seconds. So this is more a question of style than of practical limitations. ;) -- Paul Chvostek <[EMAIL PROTECTED]> Operations / Abuse / Whatever +1 416 598-0000 it.canada - hosting and development http://www.it.ca/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
