安全开发-PHP应用&文件管理模块&显示上传&黑白名单类型过滤&访问控制&文件管理模块&包含&上传&遍历&写入&删除&下载&安全

$name=$_FILES['f']['name'];
$type=$_FILES['f']['type'];
$size=$_FILES['f']['size'];
$tmp_name=$_FILES['f']['tmp_name'];
$error=$_FILES['f']['error'];

echo $name."<br>";
echo $type."<br>";
echo $size."<br>";
echo $tmp_name."<br>";
echo $error."<br>";
if(move_uploaded_file($tmp_name,'upload/'.$name)){
    echo "文件上传成功!";
}

//上传文件后缀过滤 黑名单机制
$black_ext=array('php','asp','jsp','aspx');
//xxx.jpg xxx.png
$fenge = explode('.',$name);
$exts = end($fenge);
if(in_array($exts,$black_ext)){
    echo '非法后缀文件'.$exts;
}else{
    move_uploaded_file($tmp_name,'upload/'.$name);
    echo '<script>alert("上传成功")</script>';
}

$allow_ext=array('png','jpg','gif','jpeg');
//xxx.jpg xxx.png
$fenge = explode('.',$name);
$exts = end($fenge);
if(!in_array($exts,$allow_ext)){
    echo '非法后缀文件'.$exts;
}else{
    move_uploaded_file($tmp_name,'upload/'.$name);
    echo '<script>alert("上传成功")</script>';
}

<?php
$dir = $_GET['path'] ?: './';
//1.打开目录，读取文件列表 opendir
//2.循环读取文件列表 while readdir
//3.判断是文件还是文件夹 is_dir

//打开目录，读取文件列表 opendir
function filelist($dir){
    if($dh = opendir($dir)){
        //循环读取文件列表 while readdir
        while(($file=readdir($dh) )!== false){
            //判断是文件还是文件夹 is_dir
            if(is_dir($file)){
                echo "<li><i class='fa fa-folder'></i> <a href='?path=$file'>" . $file . '</a></li>';
            }else{
                echo '<li><i class="fa fa-file"></i> <a href="#">' . $file . '</a></li>';
            }
        }
    }
}
filelist($dir);
function del($file){
    if(!is_dir($file)){
        unlink($file);
        echo "<script>alert('删除成功')</script>";
    }
}
if(isset($_GET['del'])){
    del($_GET['del']);
}
function down($filepath){
    $fileName = basename($filepath);
    header("Content-Type: application/octet-stream");
    header("Content-Disposition: attachment; filename=\"" . $fileName . "\"");
    header("Content-Length: " . filesize($filepath));
    readfile($filepath);
}
if(isset($_GET['down'])){
    down($_GET['down']);
}
?>