如何在php中不定义列名的情况下将数据插入表格单元格中

$sql = "INSERT INTO table_name VALUES (value1, value2, value3, ...)";

// 创建数据库连接
$conn = new mysqli("localhost", "username", "password", "database");

// 检查连接是否成功
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 创建INSERT语句
$sql = "INSERT INTO table_name VALUES (value1, value2, value3, ...)";

// 执行INSERT语句
if ($conn->query($sql) === TRUE) {
    echo "数据插入成功";
} else {
    echo "数据插入失败: " . $conn->error;
}

// 关闭数据库连接
$conn->close();