PHP database batch deletion method
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Title</title> </head> <body> <?php $db = new Mysqli("localhost","root","root","db_0808"); //!$db?"":die("链接错误"); empty(mysqli_connect_error())?"":die("链接错误"); $sql = "select * from student where is_delete='0'"; //$data = $db->query($sql)->fetch_all(); ?> <form action="batch_delete.php" method="post"> <table border="1"> <tr> <td>id</td> <td>名字</td> <td>性别</td> <td>班级</td> <td>生日</td> <td>操作</td> <td>选择</td> </tr> <?php $result=$db->query($sql); while ($data=$result->fetch_row()){ // foreach ($data as $i){ if ($data[2]==1){ $data[2]="男"; }else if ($data[2]==0){ $data[2]="女"; }else{ $data[2]="保密"; } echo "<tr> <td>{$data[0]}</td> <td>{$data[1]}</td> <td>{$data[2]}</td> <td>{$data[3]}</td> <td>{$data[4]}</td> <td><a href='delete.php?id={$data[0]}'>删除</a> <a href='xiugai.php?id={$data[0]}'>修改</a> </td> <td><input type='checkbox' name='ids[]' value='{$data[0]}'></td> // </tr>"; } ?> </table> <form action="batch_delete.php" method="post"> <input type="submit" value="删除所选"> </form> <a href="add.php">新增用户</a> </body> </html>
<?php /** * Created by fcc * User: Administrator * Date: 2017/10/17 * Time: 15:16 */$ids=$_POST['ids'];$db=new Mysqli("localhost","root","root","db_0808");empty(mysqli_connect_error())?"":die("链接错误");//$sql="DELETE FROM student WHERE Sno='{$id}'";//彻底删除foreach ($ids as $i){$sql = "update student set is_delete = '1' where Sno= '{$i}'";//表面删除if ($db->query($sql)){ header("location:CURD.php"); }; };
The above is the detailed content of PHP database batch deletion method. For more information, please follow other related articles on the PHP Chinese website!

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

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

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

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 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.

MySQL is an open source relational database management system. 1) Create database and tables: Use the CREATEDATABASE and CREATETABLE commands. 2) Basic operations: INSERT, UPDATE, DELETE and SELECT. 3) Advanced operations: JOIN, subquery and transaction processing. 4) Debugging skills: Check syntax, data type and permissions. 5) Optimization suggestions: Use indexes, avoid SELECT* and use transactions.

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

In PHP8, match expressions are a new control structure that returns different results based on the value of the expression. 1) It is similar to a switch statement, but returns a value instead of an execution statement block. 2) The match expression is strictly compared (===), which improves security. 3) It avoids possible break omissions in switch statements and enhances the simplicity and readability of the code.

In PHP, you can effectively prevent CSRF attacks by using unpredictable tokens. Specific methods include: 1. Generate and embed CSRF tokens in the form; 2. Verify the validity of the token when processing the request.

PHP 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 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.
