ajax/php autocomplete issue - php

Question

i'm new to pdo and json. I want to make an autocomplete searching by username and also displaying pic next to name. The issue i have is that my script is not displaying pic next to name but it makes it part of autocomplete, i mean it displays if it matches the letters from the search box. Sorry if my english is bad.Here is my sql script:
include("configPDO.php");
// Query to get the usable suggestions
$likeString = '%' . $_GET['term'] . '%';
// We Will prepare SQL Query
$STM = $dbh->prepare("SELECT username,avatar,id FROM `users` WHERE username LIKE :likeString");
// bind parameters, Named parameters always start with colon(:)
$STM->bindParam(':likeString', $likeString);
// For Executing prepared statement we will use below function
$STM->execute();
// we will fetch records like this and use foreach loop to show multiple Results
$STMrecords = $STM->fetchAll();
$Category_array = array();
foreach($STMrecords as $row)
{
$result = $row[0].$row[1];
array_push($Category_array, $result);
}
$json = json_encode($Category_array);
echo $json;
this is my ajax code using jquery.ui.autocomplete.js
<script type="text/javascript">
$(document).ready(function()
{
$.ajax({
url: 'Get_Auto1.php',
dataType: 'json',
success: function(data){
$('#searchg').autocomplete(
{
source: data,
minLength: 1
});
}
});
});
</script>
Thnx in advance.
I managed to make it displaying the avatar next to each result but id doesnt show the image itself just the url ex:"http://twingoo.ro/images/twingoo_logo.png", i also tryed with img src. I modified this line of code: $result = $row[0].$row[1];
here is the link of the demo: demo link