用户名首字母可以数字

application/admin/validate/shopro/user/User.php

@@ -11,7 +11,7 @@ class User extends Validate
 {
     protected $regex = [
         'password' => '/^(?![0-9]+$)(?![a-zA-Z]+$)[0-9A-Za-z]+\S{5,12}$/',
-        'notPureNumber'  => '^[a-zA-Z][a-zA-Z0-9_]{4,15}$',
+        'notPureNumber'  => '^[a-zA-Z0-9][a-zA-Z0-9_]{4,15}$',
         'mobile' => '/^1[3456789]\d{9}$/',
     ];