Table of Contents
回复讨论(解决方案)

PHP 删除文件

Jun 23, 2016 pm 01:49 PM
php delete document

include("conn/conn.php");
$id=$_GET[id];
$tupian=$_GET[tupian];
$user = new shanchu();
$user->delFileUnderDir();
$sql=mysql_query("delete from image where id=$id");

class shanchu {
//循环目录下的所有文件
function delFileUnderDir( $dirName="../admin/upimages" )
{
if ( $handle = opendir( "$dirName" ) ) {
   while ( false !== ( $item = readdir( $handle ) ) ) {
   if ( $item != "." && $item != ".." ) {
   if ( is_dir( "$dirName/$item" ) ) {
         delFileUnderDir( "$dirName/$item"  );
   } else {
   if( unlink( "$dirName/$item"  ) )
   echo "<script>alert('该信息已经删除!');window.location.href='delete.php?type=$type';</script>";
   
   }
   }
   }
   closedir( $handle );
}
}
}
?>

现在是删除文件夹下的所以文件,我想要的是单个文件的删除操作。
还有帮忙加下数据库字段的删除结合。


回复讨论(解决方案)

http://www.phpthinking.com/archives/238   可以参考下


可以在我发的代码的基础下改吗?

首先你需要找出所有文件,然后列表出来
例如
file1 删除
file2 删除
file3 删除
file4 删除
点删除时,把文件名称带过去。例如删除

接受到filename之后,使用unlink($filename);就可以删除单个文件了。

删除单个文件示例
//显示页面设置
if($_SESSION["tb_forum_name"]==""){//记录登陆名信息
  echo "<script>alert('禁止非法登录!');window.location.href='hlogin.php';</script>";
  exit;
 }else{
?>
//查询数据库数据表信息
   if($page){
    $page_size=6;          //每页显示2条记录
    $query="select count(*) as total from tb_photo where up_id";  //从数据库中读取数据
$result=mysql_query($query);
    $message_count=mysql_result($result,0,"total");  //获取总的记录数
    $page_count=ceil($message_count/$page_size);  //获取总的页数
    $offset=($page-1)*$page_size;  
$query=mysql_query("select * from tb_photo where up_id order by up_id desc limit $offset, $page_size");
while($myrow=mysql_fetch_array($query)){
?>
//这里就表示图片设置信息其他信息(略)

PHP 删除文件
//点击删除按钮,根据其点击的ID号发送的删除页面处理删除这一条数据信息
&&picpath=" class="STYLE1">删除图片信息
//接收选择ID号删除相应的数据库中的数据
$delete_id=$_GET[delete_id];//接收要删除的ID号
$picpath='../'.$_GET[picpath];//删除保存在目录中和数据库同时保存的图片
$former = substr(strrchr($picpath,'/'),1);//设置保存的图片路径
if(file_exists($picpath)){
unlink($picpath);//查询处理图片保存的路径信息
}//CodeGo.net/
$query=mysql_query("delete from tb_photo where up_id='$delete_id'");//根据数据库信息查询要删除的数据ID
if($query==true){//如果存在数据就执行删除
echo "<script>alert('删除成功!');history.back();</script>";
}else{
echo "<script>alert('删除失败!');history.back();</script>";
}//注意:table信息(省略)
?>
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP 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.

See all articles