辑wp-admin/includes/file.php这个文件

1、查找：

$new_file = $uploads['path'] . "/$filename";

替换为：

$new_file = $uploads['path'] . "/" . iconv("UTF-8","GB2312",$filename);

注意，之需要替换第一处即可！

2、查找

return apply_filters( 'wp_handle_upload', array( 'file' => $new_file, 'url' => $url, 'type' => $type ), 'upload' );

修改为：（修正中文文件名编码问题）

return apply_filters( 'wp_handle_upload', array( 'file' => $uploads['path'] . "/$filename", 'url' => $url, 'type' => $type ) , 'upload');