encode json array from latin1 - php

Question

So i am very new to php and having problem with my array.
"Basically I have an array with 5 fields.
Now the data is partially in latin1-german. But this let's the php output "null". How do I decode the array, that makes the php return the right text?"
edit:
So I altered the code (JSON_PRETTY_PRINT made it return nothing).
But the problem still remains. The special characters like "ä" and "ü" still make it return ":null".
// get all products from products table
$result = mysql_query("SELECT *FROM silberhell_app") or die(mysql_error());
// check for empty result
if (mysql_num_rows($result) > 0) {
// looping through all results
// products node
$response["products"] = array();
while ($row = mysql_fetch_array($result)) {
// temp user array
$product = array();
$product["pid"] = $row["pid"];
$product["name"] = $row["name"];
$product["kategorie"] = $row["kategorie"];
$product["beschreibung"] = $row["beschreibung"];
$product["bild"] = $row["bild"];
$product["preis"] = $row["preis"];
array_map($product, "utf8_encode"); // encode array values
$products[] = $product; // insert product into array
}
$data = array(
//'success' => 1,
'products' => $products
);
}
echo json_encode($data); // make it slightly more readable
?>

Answer 1

Slightly cleaned up, should work now:
$products = array();
while ($row = mysql_fetch_array($result)) {
$product = array();
$product["pid"] = $row["pid"];
[...]
array_map("utf8_encode", $product); // encode array values
$products[] = $product; // insert product into array
}
$data = array(
'success' => 1,
'products' => $products
);
echo json_encode($data, JSON_PRETTY_PRINT); // make it slightly more readable