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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Math;
use Magento\Framework\Exception\LocalizedException;
use Magento\Framework\Phrase;
/**
* Random data generator
*
* @api
* @since 100.0.2
*/
class Random
{
/**#@+
* Frequently used character classes
*/
const CHARS_LOWERS = 'abcdefghijklmnopqrstuvwxyz';
const CHARS_UPPERS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
const CHARS_DIGITS = '0123456789';
/**#@-*/
/**
* Get random string.
*
* @param int $length
* @param null|string $chars
*
* @return string
* @throws LocalizedException
*/
public function getRandomString($length, $chars = null)
{
$str = '';
if (null === $chars) {
$chars = self::CHARS_LOWERS.self::CHARS_UPPERS.self::CHARS_DIGITS;
}
$charsMaxKey = mb_strlen($chars) - 1;
for ($i = 0; $i < $length; $i++) {
$str .= $chars[self::getRandomNumber(0, $charsMaxKey)];
}
return $str;
}
/**
* Return a random number in the specified range
*
* @param int $min
* @param int $max
* @return int A random integer value between min (or 0) and max
* @throws LocalizedException
*/
public static function getRandomNumber($min = 0, $max = null)
{
if (null === $max) {
$max = mt_getrandmax();
}
if ($max < $min) {
throw new LocalizedException(new Phrase('Invalid range given.'));
}
return random_int($min, $max);
}
/**
* Generate a hash from unique ID.
*
* @param string $prefix
* @return string
* @throws LocalizedException
*/
public function getUniqueHash($prefix = '')
{
return $prefix . $this->getRandomString(32);
}
}