feat : user

app/Service/ServiceTrait/Common/UserTrait.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Service\ServiceTrait\Common;
+
+use Random\RandomException;
+
+trait UserTrait
+{
+    /**
+     * @param int $userId
+     * @return string
+     * @throws RandomException
+     */
+    protected function generateStableCode(int $userId): string
+    {
+        $chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
+        $seed = $userId . random_bytes(16) . microtime(true);
+
+        // 使用分段处理避免大数
+        $hash = hash('sha256', $seed, true);
+        $code = '';
+
+        for ($i=0; $i<8; $i++) {
+            // 每次取1字节数据（0-255）
+            $byte = ord($hash[$i]);
+            $code .= $chars[$byte % 62];
+        }
+
+        return $code;
+    }
+
+}