随机管理类
<?php
// +----------------------------------------------------------------------
// | ThinkLibrary 6.0 for ThinkPhP 6.0
// +----------------------------------------------------------------------
// | 版权所有 2017~2020 [ https://www.dtapp.net ]
// +----------------------------------------------------------------------
// | 官方网站: https://gitee.com/liguangchun/ThinkLibrary
// +----------------------------------------------------------------------
// | 开源协议 ( https://mit-license.org )
// +----------------------------------------------------------------------
// | gitee 仓库地址 ：https://gitee.com/liguangchun/ThinkLibrary
// | github 仓库地址 ：https://github.com/GC0202/ThinkLibrary
// | Packagist 地址 ：https://packagist.org/packages/liguangchun/think-library
// +----------------------------------------------------------------------
declare (strict_types=1);
namespace DtApp\ThinkLibrary\helper;
use Exception;
/**
* 随机管理类
* @mixin Randoms
* @package DtApp\ThinkLibrary\helper
*/
class Randoms
{
/**
* 生成随机
* @param int $length 长度
* @param int $type 类型，1 纯数字，2 纯小写字母，3 纯大写字母，4 数字和小写字母，5 数字和大写字母，6 大小写字母，7 数字和大小写字母
* @return string
* @throws Exception
*/
public function generate(int $length = 6, int $type = 1): string
{
// 取字符集数组
$number = range(0, 9);
$lowerLetter = range('a', 'z');
$upperLetter = range('A', 'Z');
// 根据type合并字符集
if ($type === 1) {
$charset = $number;
} elseif ($type === 2) {
$charset = $lowerLetter;
} elseif ($type === 3) {
$charset = $upperLetter;
} elseif ($type === 4) {
$charset = array_merge($number, $lowerLetter);
} elseif ($type === 5) {
$charset = array_merge($number, $upperLetter);
} elseif ($type === 6) {
$charset = array_merge($lowerLetter, $upperLetter);
} elseif ($type === 7) {
$charset = array_merge($number, $lowerLetter, $upperLetter);
} else {
$charset = $number;
}
$str = '';
// 生成字符串
for ($i = 0; $i < $length; $i++) {
$str .= $charset[random_int(0, count($charset) - 1)];
// 验证规则
if ($type === 4 && strlen($str) >= 2) {
if (!preg_match('/\d+/', $str) || !preg_match('/[a-z]+/', $str)) {
$str = substr($str, 0, -1);
--$i;
}
}
if ($type === 5 && strlen($str) >= 2) {
if (!preg_match('/\d+/', $str) || !preg_match('/[A-Z]+/', $str)) {
$str = substr($str, 0, -1);
--$i;
}
}
if ($type === 6 && strlen($str) >= 2) {
if (!preg_match('/[a-z]+/', $str) || !preg_match('/[A-Z]+/', $str)) {
$str = substr($str, 0, -1);
--$i;
}
}
if ($type === 7 && strlen($str) >= 3) {
if (!preg_match('/\d+/', $str) || !preg_match('/[a-z]+/', $str) || !preg_match('/[A-Z]+/', $str)) {
$str = substr($str, 0, -2);
$i -= 2;
}
}
}
return $str;
}
}