PHP implements file upload and download with the function of displaying files and directories-PHP Tutorial-php.cn

PHP implements file upload and download with the function of displaying files and directories

墨辰丷

Release： 2023-03-27 16:42:01

Original

3079 people have browsed it

这篇文章主要介绍了php文件上传及下载附带显示文件及目录功能,需要的朋友可以参考下

主页面wenjianceshi.php

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>文件</title>
<link href="../FENGZHUANG/bootstrap/css/bootstrap.min.css" rel="external nofollow" rel="stylesheet" type="text/css" />
<script src="../FENGZHUANG/jquery-3.1.1.min.js"></script>
<script src="../FENGZHUANG/bootstrap/js/bootstrap.min.js"></script>
<style type="text/css">
  *{
    font-family:"微软雅黑";}
  #wai{width:400px;
    margin:0 auto;
    padding:0px;}
  #chuanshu{
    width:400px;
    margin:0 auto;
    padding:0px;}
  .waibtn{
    width:100%;;
    height:30px;}
  .wjm,.wjbtn{
    width:50%;
    height:100%;
    float:left;
    }
</style>
</head>
<body>
<p id="chuanshu">
  <form role="form" action="upload.php" method="post" enctype="multipart/form-data">
   <p class="form-group">
    <label for="inputfile">文件输入</label>
    <input type="file" name="file" id="inputfile">
   </p>
   <button type="submit" class="btn btn-default">上传</button>
  </form>
</p>
<br /><br /><br />
<p id="wai">
<?php
session_start();
//定义目录
$fname = "./a";//需要显示的目录
if(!empty($_SESSION["fname"]))
{
  $fname = $_SESSION["fname"];
}
$pname = dirname($fname); //取上级目录
if(realpath($fname)=="D:\\wamp\\www\\lt\\a")//注意路径的匹配
{
}//到达了需要显示的最上层目录就不显示上一层标签了
else
{
  echo "<button type=&#39;button&#39; id=&#39;prev&#39; class=&#39;btn waibtn btn-success&#39; url=&#39;{$pname}&#39;>返回上一层</button>";
}
//遍历目录下的所有文件显示
$arr = glob($fname."/*");
foreach($arr as $v)
{
  $name = basename($v); //从完整路径中取文件名
  $name = iconv("gbk","utf-8",$name);
  if(is_dir($v))
  {
    echo "<button type=&#39;button&#39; class=&#39;btn dir waibtn btn-primary&#39; url=&#39;{$v}&#39;>{$name}</button>";
  }
  else
  {
    echo "<button type=&#39;button&#39; class=&#39;btn waibtn item btn-default&#39; url=&#39;{$v}&#39;><p class=&#39;wjm&#39;>{$name}</p><p class=&#39;wjbtn&#39;><a href=&#39;download.php? url={$v}&#39;><input type=&#39;button&#39; value=&#39;下载&#39; url=&#39;{$v}&#39; class=&#39;download btn btn-warning btn-xs&#39; /></a>  </p></button>";
  }
}
?>
</p>
</body>
<script type="text/javascript">
$(".dir").click(function(){
    var url = $(this).attr("url");
    $.ajax({
        url:"chuli2.php",
        data:{url:url},
        type:"POST",
        dataType:"TEXT",
        success: function(data){
            window.location.href="wenjianceshi.php" rel="external nofollow" rel="external nofollow" ;
          }
      });
  })
$("#prev").click(function(){
  var url = $(this).attr("url");
  $.ajax({
      url:"chuli2.php",
      data:{url:url},
      type:"POST",
      dataType:"TEXT",
      success: function(data){
          window.location.href="wenjianceshi.php" rel="external nofollow" rel="external nofollow" ;
        }
    });
  })</script>
</html>

Copy after login

显示：

上传处理页面upload.php

<?php
if($_FILES["file"]["error"])
{
  echo $_FILES["file"]["error"];
}
else
{
  if($_FILES["file"]["size"]<10240000)
  {
    //防止文件名重复
    $filename = "./a/".time().$_FILES["file"]["name"];
    //转码
    $filename = iconv("UTF-8","gb2312",$filename);
    if(file_exists($filename))
    {
      echo "该文件已存在";
    }
    else
    {
      //保存文件
      move_uploaded_file($_FILES["file"]["tmp_name"],$filename);
      header("location:wenjianchuanshu.php");
    }
  }
  else
  {
    echo "文件类型不对";
  }
}

Copy after login

点击选择文件之后选中了文件会显示:

点击上传即可。

下载处理页面download.php

<?php
$url = $_GET["url"];
$bname = basename($url);
header("Content-type:text/html;charset=utf-8"); 
$file_name="{$bname}"; 
//用以解决中文不能显示出来的问题 
$file_name=iconv("utf-8","gb2312",$file_name); 
$file_sub_path=$_SERVER[&#39;DOCUMENT_ROOT&#39;]; 
$file_path="{$url}"; 
//首先要判断给定的文件存在与否 
if(!file_exists($file_path)){ 
echo "没有该文件"; 
return ; 
} 
$fp=fopen($file_path,"r"); 
$file_size=filesize($file_path); 
//下载文件需要用到的头 
Header("Content-type: application/octet-stream"); 
Header("Accept-Ranges: bytes"); 
Header("Accept-Length:".$file_size); 
Header("Content-Disposition: attachment; filename=".$file_name); 
$buffer=10240000; 
$file_count=0; 
//向浏览器返回数据 
while(!feof($fp) && $file_count<$file_size){ 
$file_con=fread($fp,$buffer); 
$file_count+=$buffer; 
echo $file_con; 
} 
fclose($fp);

Copy after login

点击下载会弹出下载框，然后进行下载即可。

点击文件夹或者上一层的处理页面chuli2.php

<?php
session_start();
$url = $_POST["url"];
$_SESSION["fname"] = $url;

Copy after login

以上就是本文的全部内容，希望对大家的学习有所帮助。

Php8, I'm coming too

Learn website layout in 30 minutes

Shangguan Oracle Beginner to Proficient Video Tutorial

Your first line of UNI-APP code

Flutter from scratch to app launch

Brother Lian New Linux Video Tutorial

AXURE 9 Video Tutorial (Suitable for Product Manager Interactive Product Design UI)

Zero Basic Proficiency PS Video Tutorial

16 day UI video tutorial to get you started

PS Techniques and Slicing Techniques Video Tutorial

Alibaba Cloud Environment Construction and Project Launch Video Tutorial

Overview of Computer Networks - Basic Knowledge that Programmers Must Master

Essential Tutorial for Programmers - HTTP Protocol Explanation

Websocket Video Tutorial

PHP implements file upload and download with the function of displaying files and directories