JSON output for SELECT with Prepared Statement - php

Question

I am trying to encode the results from SELECT query with prepared statement into JSON output. I have the following code but I can't get it working. Any help would be greatly appreciated.
$query = "SELECT Item.ItemID, Item.ItemName FROM Items"
$stmt = $db->prepare($query);
$stmt->execute();
$stmt->store_result();
$numrows = $stmt->num_rows;
$stmt->bind_result($ItemID, $ItemName);
for ($i=0; $i <$numrows; $i++) {
$stmt->fetch();
$JSONArray = ["ItemID" => $ItemID,
"ItemName" => $ItemName
]
echo json_encode($JSONArray);
}

Answer 1

You should always add the items to the container array, not overwrite the whole array and encode & echo only once:
...
$JSONArray = []; // initialize to empty array
for ($i=0; $i <$numrows; $i++) {
$row = $stmt->fetch();
$ItemID = $row['ItemID'];
$ItemName = $row['ItemName'];
// add the new item in each iteration
$JSONArray[] = ["ItemID" => $ItemID,
"ItemName" => $ItemName
];
}
echo json_encode($JSONArray);

Answer 2

Don't you think it should be Items not Item ? also there's missing quote and semicolon.
$query = "SELECT Items.ItemID, Items.ItemName FROM Items";
$stmt = $db->prepare($query);
$stmt->execute();
$result = $stmt->fetchAll();
echo json_encode($result);
Also for convention I'd suggest you to keep lowercase table names. :)

Answer 3

When creating the PDO Object add:
array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8")
e.g.:
$db = new PDO('mysql:host='.DB_HOST.';dbname='.DB_NAME, DB_USER, DB_PASSWORD, array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8"));
that helped in my case : )
as seen on https://stackoverflow.com/a/7030557/5764766