<?php
 namespace ModStart\Core\Util; class RandomUtil { public static function number($length) { $pool = '0123456789'; return substr(str_shuffle(str_repeat($pool, $length)), 0, $length); } public static function string($length) { $pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; return substr(str_shuffle(str_repeat($pool, $length)), 0, $length); } public static function readableString($length) { $pool = '2345678abcdefghijkmnoprstuvwxyzABCDEFGHIJKMNPQRSTUVWXYZ'; return substr(str_shuffle(str_repeat($pool, $length)), 0, $length); } public static function hexString($length) { $pool = '0123456789abcdef'; return substr(str_shuffle(str_repeat($pool, $length)), 0, $length); } public static function lowerString($length) { $pool = '0123456789abcdefghijklmnopqrstuvwxyz'; return substr(str_shuffle(str_repeat($pool, $length)), 0, $length); } public static function lowerChar($length) { $pool = 'abcdefghijklmnopqrstuvwxyz'; return substr(str_shuffle(str_repeat($pool, $length)), 0, $length); } public static function upperChar($length) { $pool = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; return substr(str_shuffle(str_repeat($pool, $length)), 0, $length); } public static function upperString($length) { $pool = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'; return substr(str_shuffle(str_repeat($pool, $length)), 0, $length); } public static function uuid() { return date('Ymd') . '-' . date('Hi') . '-' . date('s') . self::hexString(2) . '-' . self::hexString(4) . '-' . self::hexString(12); } public static function percent($value) { return rand(0, 99) < $value; } public static function dateCollection($length = 10) { $list = []; for ($i = time() - $length * TimeUtil::MINUTE_PERIOD_DAY; $i <= time(); $i += TimeUtil::MINUTE_PERIOD_DAY) { $list[] = date('Y-m-d', $i); } return $list; } public static function numberCollection($length = 10, $min = 10, $max = 100) { $list = []; for ($i = 0; $i < $length; $i++) { $list[] = rand($min, $max); } return $list; } }