This function will generate a salt for use with passwords ranging using characters in range a to z, A to Z, 0 to 9 and !@#$%&?. The characters are sorted in a random value and can appear more than one time in the string. This way, this function is more powerful than the *shuffle() function. This means that the salt could also be longer than the character list.
PHP, 21 lines
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/**
* This function generates a password salt as a string of x (default = 15) characters
* in the a-zA-Z0-9!@#$%&*? range.
* @param $max integer The number of characters in the string
* @return string
* @author AfroSoft <info@afrosoft.tk>
*/
function generateSalt($max = 15) {
$characterList = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%&*?";
$i = 0;
$salt = "";
while ($i < $max) {
$salt .= $characterList{mt_rand(0, (strlen($characterList) - 1))};
$i++;
}
return $salt;
}
?>
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This code snippet is provided to you courtesy of AfroSoft: http://afrosoft.tk/.
Part of SMUtility
mt_rand(0,strlen($characterList)) will occasionally return index that is one letter out of $characterList.
Thanks, I forgot about that, modified it.
The loop executes $max+1 times, because it goes from [0..$max]. It should be: while ($i < $max), which is [0..$max)
Thanks, I updated it.
I think line 14 should be
Indeed. Fixed it!