Bagaimanakah Saya Boleh Dapatkan Nama Lajur Jadual MySQL Menggunakan PHP?

$query = "DESCRIBE my_table";
$result = $conn->query($query);
while ($row = $result->fetch_assoc()) {
    echo $row['Field'] . "<br>";
}

$query = "SELECT COLUMN_NAME
  FROM INFORMATION_SCHEMA.COLUMNS
  WHERE TABLE_SCHEMA = 'my_database' AND TABLE_NAME = 'my_table'";
$result = $conn->query($query);
while ($row = $result->fetch_assoc()) {
    echo $row['COLUMN_NAME'] . "<br>";
}

$query = "SHOW COLUMNS FROM my_table";
$result = $conn->query($query);
while ($row = $result->fetch_assoc()) {
    echo $row['Field'] . "<br>";
}

$query = "SELECT group_concat(COLUMN_NAME)
  FROM INFORMATION_SCHEMA.COLUMNS
  WHERE TABLE_SCHEMA = 'my_database' AND TABLE_NAME = 'my_table'";
$result = $conn->query($query);
$row = $result->fetch_assoc();
echo $row['group_concat(COLUMN_NAME)'];