PHP 데이터베이스 연결을 사용하여 검색 기능을 구현하는 방법

CREATE TABLE employees (
    id INT PRIMARY KEY AUTO_INCREMENT,
    name VARCHAR(255),
    position VARCHAR(255),
    salary DECIMAL(10, 2)
);

<form action="search.php" method="GET">
    <input type="text" name="query" placeholder="输入员工姓名">
    <input type="submit" value="搜索">
</form>

<?php
// 提取用户搜索查询
$query = $_GET['query'];

// 建立数据库连接
$host = 'localhost';
$username = 'root';
$password = 'password';
$dbname = 'my_database';

$connection = new mysqli($host, $username, $password, $dbname);

// 检查连接是否成功
if ($connection->connect_error) {
    die('数据库连接失败: ' . $connection->connect_error);
}

// 构建SQL查询语句
$sql = "SELECT * FROM employees WHERE name LIKE '%$query%'";

// 执行查询
$result = $connection->query($sql);

// 检查查询结果
if ($result->num_rows > 0) {
    // 输出每一行数据
    while ($row = $result->fetch_assoc()) {
        echo "姓名: " . $row['name'] . ", 职位: " . $row['position'] . ", 薪水: $" . $row['salary'] . "<br>";
    }
} else {
    echo "没有找到相关员工信息";
}

// 关闭数据库连接
$connection->close();
?>