PHP login to determine whether the account password is correct
Connect PHP to the database and determine whether the account password is correct by verifying whether the account password is the same as the record in the database.
php code to verify whether the login name and password are correct:
<?php $servername = "服务器名"; $username = "账户名"; $password = "密码"; $dbname = "数据库名"; ?> <?php // Session需要先启动。 session_start(); //判断uname和pwd是否赋值 if(isset($_POST['uname']) && isset($_POST['pwd'])){ $name = $_POST['uname']; $pwd = $_POST['pwd']; //连接数据库 $conn = new mysqli($servername, $username, $password, $dbname); if ($conn->connect_error) { die("Connection failed: " . $conn->connect_error); } //验证内容是否与数据库的记录吻合。 $sql = "SELECT * FROM test_students_all WHERE (student_name='$name') AND (password='$pwd')"; //执行上面的sql语句并将结果集赋给result。 $result = $conn->query($sql); //判断结果集的记录数是否大于0 if ($result->num_rows > 0) { $_SESSION['user_account'] = $name; // 输出每行数据 while($row = $result->fetch_assoc()) { echo '<p>' . $row['student_nbr'] . '<br/>' . $row['student_name'] . '(' . $row['sex'] . ')' . '<br/>' . $row['class'] . '<br/>' . $row['major'].'</p>'; // <p><img src="student_images/CLASS/STUDENT_NBR.jpg" /></p> echo '<p><img src="student_images/' . $row['class'] . '/' . $row['student_nbr'] . '.jpg" /></p>'; } } else { echo "没有您要的信息"; } $conn->close(); } ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>登录校验</title> </head> <body> <p> <?php // isset(xx) 测试xx是否设置了 if(isset($_SESSION['user_account'])){ echo '你好,' . $_SESSION['user_account']; } else{ echo '游客'; } //$conn->close(); ?> </p> <form method="POST"> <input type="text" name="uname" placeholder="用户名" /> <br /> <input type="password" name="pwd" placeholder="密码" /> <br /> <input type="submit"> </form> </body> </html>
The above is the detailed content of PHP login to determine whether the account password is correct. 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

AI Hentai Generator
Generate AI Hentai for free.

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

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

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

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

To work on file upload we are going to use the form helper. Here, is an example for file upload.

In this chapter, we are going to learn the following topics related to routing ?

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

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

Validator can be created by adding the following two lines in the controller.
