PHP/PDO从列选择多个条件

<?php
// 连接数据库
$dsn = "mysql:host=localhost;dbname=mydatabase";
$username = "username";
$password = "password";
$db = new PDO($dsn, $username, $password);

// 查询数据
$statement = $db->prepare("SELECT column1, column2 FROM mytable WHERE condition1 = :value1 AND condition2 = :value2");
$statement->bindParam(':value1', $value1);
$statement->bindParam(':value2', $value2);
$statement->execute();

// 处理结果
while ($row = $statement->fetch(PDO::FETCH_ASSOC)) {
    // 处理每一行数据
    $column1Value = $row['column1'];
    $column2Value = $row['column2'];
    // 其他操作...
}

// 关闭连接
$db = null;
?>