note 73539 added to function.rand

This function uses rand() to create a random string of specified length from an optionally supplied string of characters. It is good for generating passwords that only consist of alphanumeric characters or codes that must consist of a defined character space such as for barcodes. It can also be used to generate random hexadecimal numbers for things like encryption keys. It is very fast, and allows for generation of strings of unlimited length. <?php function rand_string($len, $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789') { $string = ''; for ($i = 0; $i < $len; $i++) { $pos = rand(0, strlen($chars)-1); $string .= $chars{$pos}; } return $string; } ?> ---- Server IP: 203.202.10.60 Probable Submitter: 203.214.77.49 ---- Manual Page -- http://www.php.net/manual/en/function.rand.php Edit -- https://master.php.net/note/edit/73539 Del: integrated -- https://master.php.net/note/delete/73539/integrated Del: useless -- https://master.php.net/note/delete/73539/useless Del: bad code -- https://master.php.net/note/delete/73539/bad+code Del: spam -- https://master.php.net/note/delete/73539/spam Del: non-english -- https://master.php.net/note/delete/73539/non-english Del: in docs -- https://master.php.net/note/delete/73539/in+docs Del: other reasons-- https://master.php.net/note/delete/73539 Reject -- https://master.php.net/note/reject/73539 Search -- https://master.php.net/manage/user-notes.php