<?php
// 示例代码：创建一个简单的用户登录系统
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "university_db";
// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);
// 检查连接
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
// 假设有一个表单提交的用户登录信息
$email = $_POST['email'];
$password = $_POST['password'];
// 查询数据库验证用户
$sql = "SELECT * FROM users WHERE email='$email' AND password='$password'";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// 输出数据
while($row = $result->fetch_assoc()) {
echo "Logged in as: " . $row["name"];
}
} else {
echo "Invalid login.";
}
$conn->close();
?>