/**
* Generates a character set.
*
* @param char $s The character set to generate.
* - d: digits
* - h: hex
* - u: alpha uppercase
* - l: alpha lowercase
* - o: alpha uppercase and lowercase only
* - A: alpha numeric uppercase
* - a: alpha numeric lowercase
* - m: mixed
*
* @return string
*/
private static function getCharacterSet($s)
{
$digits = '0123456789';
$hexDigits = '0123456789ABCDEF';
$upper = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$lower = 'abcdefghijklmnopqrstuvwxyz';
$chars = '';
switch ($s) {
case 'o':
$chars = get::randomizeString($upper) . get::randomizeString($lower);
break;
case 'd':
$chars = get::randomizeString($digits);
break;
case 'h':
$chars = get::randomizeString($hexDigits);
break;
case 'u':
$chars = get::randomizeString($upper);
break;
case 'l':
$chars = get::randomizeString($lower);
break;
case 'A':
$chars = get::randomizeString($digits) . get::randomizeString($upper) . get::randomizeString($digits);
break;
case 'a':
$chars = get::randomizeString($digits) . get::randomizeString($lower) . get::randomizeString($digits);
break;
case 'm':
$chars = get::randomizeString($digits) . get::randomizeString($upper) . get::randomizeString($digits) . get::randomizeString($lower) . get::randomizeString($digits);
break;
}
return $chars;
}
