The issue probably relates to $files = "upload/".array('Dear GP.docx','ecommerce.doc');. Try displaying errors and check for PHP errors. You are trying to cast an array as a string.

<?php $conn=mysql_connect("localhost","用户名","l数据库密码"); mysql_select_db("用户名",$conn); mysql_query("set names utf8"); function getstr($string,$length,$encoding='utf-8') { $string = trim