48 lines
1.4 KiB
PHP
48 lines
1.4 KiB
PHP
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<?php
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/*
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* Copyright © 2016 - 2023 筱锋xiao_lfeng. All Rights Reserved.
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* 开发开源遵循 MIT 许可，若需商用请联系开发者
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* https://www.x-lf.com/
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*/
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class Key
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{
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/**
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* 生成验证码
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* 说明：
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*
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* 1. [type(string)]
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* - [Number] 数字验证码
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* - [English]英文验证码
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* - [Normal] 混合验证码
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* @param int $long 验证码长度
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* @param string $type 验证码类型
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* @return string 返回结果为生成的验证码
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*/
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public static function Captcha(int $long, string $type = 'Number'): string
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{
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/** @var string $output */
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for ($i = 1; $i <= $long; $i++) {
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if ($type == 'Number') {
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$output = $output . rand(0, 9);
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} elseif ($type == 'English') {
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$output = $output . chr(rand(65, 90));
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} elseif ($type == 'Normal') {
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if (time() % 2 == 0) {
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if ($i % 2 == 0) {
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$output = $output . chr(rand(65, 90));
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} else {
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$output = $output . rand(0, 9);
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}
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} else {
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if ($i % 3 != 0) {
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$output = $output . chr(rand(65, 90));
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} else {
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$output = $output . rand(0, 9);
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}
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}
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}
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}
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return $output;
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}
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}
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