如何获取表头，如何获取表头，如何获取表头，！！

//取得表头
$stamt1=$pdo->prepare("SHOW COLUMNS FROM shop");
$stamt1->execute();
while ($c1=$stamt1->fetch(PDO::FETCH_NUM)){
    $list1[]=$c1;
}
var_dump($list1);
//取得表头
echo  "<table border=1>";
echo "<th>{$list1[0][0]}</th>";
echo "<th>{$list1[1][0]}</th>";