用PHP从MySQL中查找特定数据

<?php
// 数据库配置信息
$host = 'localhost';
$dbname = 'your_database';
$username = 'your_username';
$password = 'your_password';

try {
    // 创建PDO实例
    $pdo = new PDO("mysql:host=$host;dbname=$dbname", $username, $password);
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    // 准备SQL语句
    $stmt = $pdo->prepare("SELECT * FROM your_table WHERE some_column = :value");

    // 绑定参数
    $stmt->bindParam(':value', $searchValue);

    // 设置搜索值
    $searchValue = 'your_search_value';

    // 执行查询
    $stmt->execute();

    // 获取结果集
    $results = $stmt->fetchAll(PDO::FETCH_ASSOC);

    // 遍历结果集并输出
    foreach ($results as $row) {
        echo "ID: " . $row['id'] . " - Name: " . $row['name'] . "<br>";
    }
} catch (PDOException $e) {
    echo "数据库连接失败: " . $e->getMessage();
}
?>