Backend DevelopmentPHP TutorialPHP implements file upload and download with the function of displaying files and directoriesPHP implements file upload and download with the function of displaying files and directories
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($fname)=="D:\\wamp\\www\\lt\\a")//注意路径的匹配
{
}//到达了需要显示的最上层目录就不显示上一层标签了
else
{
echo "<button type='button' id='prev' class='btn waibtn btn-success' url='{$pname}'>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($v))
{
echo "<button type='button' class='btn dir waibtn btn-primary' url='{$v}'>{$name}</button>";
}
else
{
echo "<button type='button' class='btn waibtn item btn-default' url='{$v}'><p class='wjm'>{$name}</p><p class='wjbtn'><a href='download.php? url={$v}'><input type='button' value='下载' url='{$v}' class='download btn btn-warning btn-xs' /></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");
$.ajax({
url:"chuli2.php",
data:{url:url},
type:"POST",
dataType:"TEXT",
success: function(data){
window.location.href="wenjianceshi.php" rel="external nofollow" rel="external nofollow" ;
}
});
})</script>
</html>
显示：
上传处理页面upload.php
<?php
if($_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";
}
}
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['DOCUMENT_ROOT'];
$file_path="{$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);
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;
以上就是本文的全部内容，希望对大家的学习有所帮助。
相关推荐：
php使用Header函数,PHP_AUTH_PW和PHP_AUTH_USER做用户验证_php技巧
The above is the detailed content of PHP implements file upload and download with the function of displaying files and directories. For more information, please follow other related articles on the PHP Chinese website!
PHP's Purpose: Building Dynamic WebsitesApr 15, 2025 am 12:18 AMPHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.
PHP: Handling Databases and Server-Side LogicApr 15, 2025 am 12:15 AMPHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.
How do you prevent SQL Injection in PHP? (Prepared statements, PDO)Apr 15, 2025 am 12:15 AMUsing preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.
PHP and Python: Code Examples and ComparisonApr 15, 2025 am 12:07 AMPHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.
PHP in Action: Real-World Examples and ApplicationsApr 14, 2025 am 12:19 AMPHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.
PHP: Creating Interactive Web Content with EaseApr 14, 2025 am 12:15 AMPHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.
PHP and Python: Comparing Two Popular Programming LanguagesApr 14, 2025 am 12:13 AMPHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.
The Enduring Relevance of PHP: Is It Still Alive?Apr 14, 2025 am 12:12 AMPHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
Atom editor mac version download
The most popular open source editor
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
