Json analise

<?php

header('Content-disposition: attachment; filename=tutorial.json');
header('Content-type: application/json');

$host="db4free.net"; //replace with database hostname
$username="xxxx"; //replace with database username
$password="xxxxx"; //replace with database password
$db_name="xxxxx"; //replace with database name

$con=mysql_connect("$host", "$username", "$password")or die("Nao foi possivel Conectar");
mysql_select_db("$db_name")or die("Banco de dados Indisponivel");

$return_arr = array();

$fetch = mysql_query("SELECT * FROM anuncios ORDER BY data");

while ($row = mysql_fetch_array($fetch, MYSQL_ASSOC)) {
    $row_array['country'] = $row['titulo'];
    $row_array['code'] = $row['id'];

    array_push($return_arr,$row_array);
}
mysql_close($con);
echo json_encode($return_arr);
?>