Signed-off-by: jenkincei <jenkincei@hotmail.com> Init

Author: jiaxincui

.gitignore

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+.idea/
+vendor/

LICENSE.md

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+# The MIT License (MIT)
+
+> Permission is hereby granted, free of charge, to any person obtaining a copy
+> of this software and associated documentation files (the "Software"), to deal
+> in the Software without restriction, including without limitation the rights
+> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+> copies of the Software, and to permit persons to whom the Software is
+> furnished to do so, subject to the following conditions:
+>
+> The above copyright notice and this permission notice shall be included in
+> all copies or substantial portions of the Software.
+>
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+> THE SOFTWARE.

README.md

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+## 介绍
+Laravel对ID进行对称加密的辅助函数
+
+只适用于正整数加密,目前只测试12位以内正整数有效
+## 安装
+```sh
+$ composer require jiaxincui/hashid
+```
+## 配置
+1. 复制`config/hashid.php`文件到Laravel项目的`config`文件夹
+2. 在.env文件添加配置项`HASH_ID_KEY=your-key`
+* 请务必手动重新生成HASH_ID_KEY,为0-9a-zA-Z共62个字符随机排序,字符不可重复,长度为16-62,可使用以下方法生成
+```php
+echo str_shuffle('0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
+```
+## 使用
+在laravel项目的任何地方均可使用`id_encode()`或`id_decode()`函数对ID进行加密或解密
+
+### 例子
+```php
+
+echo id_encode(4568); //输出:N5lkv0
+  
+echo id_decode('N5lkvO'); //输出:4568
+  
+//不可对float类型数字加密，不可对负数加密，给定任何非正整数参数都会返回null
+echo id_encode(2.36); //非正整数,输出:null
+echo id_encode(-23); //非正整数,输出:null
+  
+//解密时任何无效字符串参数或校验错误都将返回null, 如：
+echo id_decode('m_Dl9'); //包含无效字符,输出:null
+echo id_decode('nlK8GhRW'); //校验错误,输出:null
+
+```

composer.json

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+{
+    "name": "jiaxincui/hashid",
+    "type": "library",
+    "description": "Laravel ID Encrypt Helper",
+    "keywords": ["laravel", "encrypt", "helper", "hashid"],
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Jiaxin Cui",
+            "email": "jenkincei@hotmail.com"
+        }
+    ],
+    "require": {},
+    "autoload": {
+        "files": [
+            "src/helpers.php"
+        ]
+    },
+    "minimum-stability": "stable"
+}

config/hashid.php

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+<?php
+/**
+ * key为0-9a-zA-Z的不重复字符串,最少16位,最多62位,推荐62位.
+ * 可使用str_shuffle('0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ')对现有字符串重新生成复制到这里.
+ */
+
+return [
+    'key' => env('HASH_ID_KEY', 'Fi1yqx4mk3Bda7DfMCjWoOSUHYTRKhuszl2cg5pXLe6AwEGn8NvJ9VtZr0IQbP')
+];

src/helpers.php

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+<?php
+
+if (! function_exists('id_encode')) {
+    /**
+     * 加密正整数
+     *
+     * @param $int
+     * @return string | null
+     */
+    function id_encode($int)
+    {
+        if (! is_numeric($int) || $int < 0 || ! is_int($int + 0)) {
+            return null;
+        }
+        $sign = 0;
+        foreach (str_split($int) as $v) {
+            $sign += $v;
+        }
+        $keyArr = str_split(config('hashid.key'));
+        $keyLen = count($keyArr);
+        $rand = mt_rand(0, $keyLen - 1);
+        $str = $keyArr[$rand];
+        foreach (str_split(dechex($int)) as $v) {
+            $offset = hexdec($v) + $rand;
+            $str .= $keyArr[$offset % $keyLen];
+        }
+        return $str . $keyArr[$sign % $keyLen];
+    }
+}
+
+if (! function_exists('id_decode')) {
+    /**
+     * 对加密后的字符串解密
+     *
+     * @param $str
+     * @return Number | null
+     */
+    function id_decode($str)
+    {
+        if (! preg_match('/^[0-9a-zA-Z]{2,12}$/', $str)) {
+            return null;
+        }
+        $strArr = str_split($str);
+        $key = config('hashid.key');
+        $keyArr = str_split($key);
+        $keyLen = count($keyArr);
+        $hex = '';
+        $rand = strpos($key, array_shift($strArr));
+        $verfy = array_pop($strArr);
+        foreach ($strArr as $v) {
+            $hex .= strpos($key, $v) >= $rand ? dechex(strpos($key, $v) - $rand) : dechex($keyLen - $rand + strpos($key, $v));
+        }
+        $dec = hexdec($hex);
+        $decArr = str_split($dec);
+        $sign = 0;
+        foreach ($decArr as $v) {
+            $sign += $v;
+        }
+        if ($verfy !== $keyArr[$sign % $keyLen]) {
+            return null;
+        }
+        return $dec;
+    }
+}