I'm trying to put an mysql query result into an string I tried to find an answer but all the similar posts were getting subquery answers which is not what I'm trying to do.

for example

Fruits_tbl

ID     Fruit     Color     Number
__________________________________
2      Apple      Red       5

$sql = "select Fruits,Color,Number from Fruits_tbl where ID = 2";
$result = $pdo->query($sql);
$row = $result->fetch();
print_r($row);

This will give me something like
Array([0]=>"Apple", [1]=>"Red", [2]=>"5", [Fruit]=>"Apple", [Color]=>"Red", [Number]=>"5")

implode will give me 2 of each
I want just need a string = "Apple, Red, 5"

what I currently have is

$string = $row[Fruit].", ".$row[Color].", ".$row['Number']

As you can see that's rather tedious.
Is there something like implode but only return the index array or something?