update:skuid 生成类

src/Common/GoodSkuId.php

+<?php
+
+namespace Api\PhpUtils\Common;
+
+
+class GoodSkuId
+{
+    /**
+     * 生成加密后的 sku_id
+     * id 非雪花算法生成的sku_id
+     * category_1_id 一级分类的id，两位，不足两位在十位补零
+     * category_2_id 二级分类的id，两位，不足三位在百位补零
+     * spu 商品类型，1虚拟商品，2实体商品
+     *
+     * @param $id
+     * @param $category1Id
+     * @param $category2Id
+     * @param $spuType
+     * @return string
+     */
+    public static function generateGoodSkuId($id, $category1Id, $category2Id, $spuType)
+    {
+        if (strlen($category1Id) == 1) {
+            $category1Id = "0" . $category1Id;
+        }
+        if (strlen($category2Id) == 2) {
+            $category2Id = "0" . $category2Id;
+        }
+        $idStr = $id . $category1Id . $category2Id . $spuType;
+        //转62进制
+        $tmp = BaseConvert::decToOther($idStr);
+
+        $len = strlen($tmp);
+        $len = $len < 6 ? 6 : $len;
+        if ($len % 2 == 1) {
+            $tmp = '0' . $tmp;
+            $len += 1;
+        }
+        $tmp = str_pad(strval($tmp), $len < 6 ? 6 : $len, '0', STR_PAD_LEFT);
+        $sum = 0;
+        for ($i = 0; $i < $len / 2; $i++) {
+            $sum *= 137;
+            $sum += ord($tmp[$i]) ^ ord($tmp[$len - $i - 1]);
+        }
+        $code = '';
+        $base = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
+        for ($i = 2; $i > 0; $i--) {
+            $idx = $sum % 62;
+            $sum = ($sum - $idx) / 62;
+            $code = $base[$idx] . $code;
+        }
+
+        return $tmp . $code;
+    }
+}
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