merge heihedata branch r4153

application/module/Users/Operation/LoginOperate.php

@@ -45,9 +45,9 @@ class LoginOperate implements \Users\Event\LoginEvent
 		
 		if(!empty($data['username']))
 		{
-			if(!preg_match("/^[a-zA-Z][a-zA-Z0-9_]{2,15}$/",$data['username']))
+			if(mb_strlen($data['username'])<2)
 			{
-				return array('error'=>"用户名应当以字母开头，由字母数字和下划线组成，并且长度在3到25个字符之间",'place'=>'username');
+				return array('error'=>"用户名长度应该大于两个字符",'place'=>'username');
 			}
 		}