note 27790 added to function.uniqid

From: Date: Wed, 18 Dec 2002 21:26:28 +0000
Subject: note 27790 added to function.uniqid
Groups: php.notes 
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My way of generating an ID (32 char string) for use as session identifiers. Just call NewSessionIdentifier() and use the return value as you like. //srand just once please srand((double)microtime()*1000000); //return a (pseudo) random string of specified length, default=114 function RandomString( $passwordLength=114) { $password = ""; for ($index = 1; $index <= $passwordLength; $index++) { // Pick random number between 1 and 62 $randomNumber = rand(1, 62); // Select random character based on mapping. if ($randomNumber < 11) $password .= Chr($randomNumber + 48 - 1); // [ 1,10] => [0,9] else if ($randomNumber < 37) $password .= Chr($randomNumber + 65 - 10); // [11,36] => [A,Z] else $password .= Chr($randomNumber + 97 - 36); // [37,62] => [a,z] } return $password; } //Returns randomness as string function NewSessionIdentifier() { //MD5 it (always 32 bytes long) return (string) md5(uniqid (RandomString(114),1 )); } -- http://www.php.net/manual/en/function.uniqid.php http://master.php.net/manage/user-notes.php?action=edit+27790 http://master.php.net/manage/user-notes.php?action=delete+27790 http://master.php.net/manage/user-notes.php?action=reject+27790

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