why this function is returning null

From: Date: Fri, 07 Jul 2000 16:17:30 +0000
Subject: why this function is returning null
Groups: php.general 
Request: Send a blank email to php-general+get-5402@lists.php.net to get a copy of this message
I copied the following function from "core php". it is returning nothing. what is wrong??? please help <?php function sessionId($len=8) { $pool = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; $pool.= "abcdefghijklmnopqrstuvwxyz"; srand((double)microtime()*1000000); for($i = 0; $i < $len; $i++) { $sid .= substr($pool, (rand()%(strlen($pool))),1); } return($sid); } # srand(time()); $session = sessionId(8); echo "There is a sessionId set<br>"; echo "you will see it<br>"; echo "$ession"; echo "</body>"; echo "</html>"; ?> Thank in advance

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