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<?php
/**
* @ file random_passwd_function.php
* @ authour lackson david
* @ created on Mon, March 11 2013
**/
Function createRandomPassword($length = 6)
{
// start with a blank password
$password = "";
// define possible characters - any character in this string can be
// picked for use in the password
$possible = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
// we refer to the length of $possible a few times, so let's grab it now
$maxlength = strlen($possible);
// check for length overflow and truncate if necessary
if ($length > $maxlength) {
$length = $maxlength;
}
// set up a counter for how many characters are in the password so far
$i = 0;
// add random characters to $password until $length is reached
while ($i < $length) {
// pick a random character from the possible ones
$char = substr($possible, mt_rand(0, $maxlength-1), 1);
// have we already used this character in $password?
if (!strstr($password, $char)) {
// no, so it's OK to add it onto the end of whatever we've already got...
$password .= $char;
$i++;
}
}
return $password;
}
?>
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