Unload-labs-pass-04

$is_upload = false;
$msg = null;
if (isset($_POST['submit'])) {
    if (file_exists(UPLOAD_PATH)) {
        $deny_ext = array(".php",".php5",".php4",".php3",".php2",".php1",".html",".htm",".phtml",".pht",".pHp",".pHp5",".pHp4",".pHp3",".pHp2",".pHp1",".Html",".Htm",".pHtml",".jsp",".jspa",".jspx",".jsw",".jsv",".jspf",".jtml",".jSp",".jSpx",".jSpa",".jSw",".jSv",".jSpf",".jHtml",".asp",".aspx",".asa",".asax",".ascx",".ashx",".asmx",".cer",".aSp",".aSpx",".aSa",".aSax",".aScx",".aShx",".aSmx",".cEr",".sWf",".swf",".ini");
        $file_name = trim($_FILES['upload_file']['name']);
        $file_name = deldot($file_name);//删除文件名末尾的点
        $file_ext = strrchr($file_name, '.');
        $file_ext = strtolower($file_ext); //转换为小写
        $file_ext = str_ireplace('::$DATA', '', $file_ext);//去除字符串::$DATA
        $file_ext = trim($file_ext); //收尾去空
 
        if (!in_array($file_ext, $deny_ext)) {
            $temp_file = $_FILES['upload_file']['tmp_name'];
            $img_path = UPLOAD_PATH.'/'.$file_name;
            if (move_uploaded_file($temp_file, $img_path)) {
                $is_upload = true;
            } else {
                $msg = '上传出错！';
            }
        } else {
            $msg = '此文件不允许上传!';
        }
    } else {
        $msg = UPLOAD_PATH . '文件夹不存在,请手工创建！';
    }
}

".htaccess" 是一个用于配置 Apache 服务器的配置文件。它可以用来控制网站的访问权限、重定向 URL、设置错误页面、启用压缩等。通过修改 ".htaccess" 文件，您可以对网站的行为和功能进行一些定制。通常，这个文件放置在网站的根目录中，并且以点号开头，因此在文件系统中可能看不到它，需要打开隐藏文件才能看到。

.htaccess参数

常见配法有以下几种：

AddHandler php5-script .jpg
 
AddType application/x-httpd-php .jpg
 
Sethandler application/x-httpd-php

Sethandler 将该目录及子目录的所有文件均映射为php文件类型。
Addhandler 使用 php5-script 处理器来解析所匹配到的文件。
AddType 将特定扩展名文件映射为php文件类型。 

我创建一个.htaccess写入

"shell.jpg">
Sethandler application/x-httpd-php

FilesMatch用于Apache配置文件中的FilesMatch指令，用于匹配特定文件名的文件。 

再将php文件改成图片格式jpg

之后先传.htaccess文件再传jpg--注意不要在本关下创建.htaccess。

这是先传的.htaccess

在传jpg  

没有解析成功，照常理应该能成功