php怎么删除数据库对应的表

<?php
$servername = "localhost";
$username = "username";
$passWord = "password";
$dbname = "myDB";

// 创建连接
$conn = mysqli_connect($servername, $username, $password, $dbname);
// 检测连接是否成功
if (!$conn) {
    die("Connection failed: " . mysqli_connect_error());
}

$sql = "DROP TABLE my_table";//删除my_table表

if (mysqli_query($conn, $sql)) {
    echo "Table my_table deleted successfully";
} else {
    echo "Error deleting table: " . mysqli_error($conn);
}

mysqli_close($conn);//关闭连接
?>

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

try {
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    // 设置 PDO 错误模式为异常
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    $sql = "DROP TABLE my_table";//删除my_table表
    // 使用 exec()，因为没有结果返回
    $conn->exec($sql);
    echo "Table my_table deleted successfully";
} catch(PDOException $e) {
    echo $sql . "<br>" . $e->getMessage();
}

$conn = null;//关闭连接
?>