Check if value is exist in database jQuery and php - php

Question

I m having a bit of trouble while validating value in database.
This is my html and js Code:
<input type="text" name="Unieke-voucher" value="" size="40" maxlength="8" minlength="8" id="voucher" aria-required="true" aria-invalid="false" placeholder="XYZ 1234">
var searchTimeout; //Timer to wait a little before fetching the data
jQuery("#voucher").keyup(function() {
vCode = this.value;
clearTimeout(searchTimeout);
searchTimeout = setTimeout(function() {
getUsers(vCode);
}, 400); //If the key isn't pressed 400 ms, we fetch the data
});
var searchTimeout; //Timer to wait a little before fetching the data
jQuery("#voucher").keyup(function() {
vCode = this.value;
clearTimeout(searchTimeout);
searchTimeout = setTimeout(function() {
getUsers(vCode);
}, 400); //If the key isn't pressed 400 ms, we fetch the data
});
function getUsers(vCode) {
jQuery.ajax({
url: 'voucher.php',
type: 'GET',
dataType: 'json',
data: {value: vCode},
success: function(data) {
if(data.status) {
jQuery("#codeError").html('');
console.log(data);
} else {
jQuery("#codeError").html('Value not found');
}
console.log(data);
}
});
}
With this getting value with keyup event and sending to php script till here working fine.
And this is php script:
$dbname = "voucher";
$dbuser = "root";
$dbpass = "root";
$dbhost = "localhost";
// Create connection
$conn = new mysqli($dbhost, $dbuser, $dbpass, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$voucherCode = $_GET['VoucherCode'];
$voucherCode['status'] = false;
//echo $voucherCode;
$result = mysqli_query($conn, "SELECT * FROM VoucherCode WHERE `code` LIKE '$voucherCode' LIMIT 1");
if(mysqli_num_rows($result)) {
$userData = mysqli_fetch_assoc($result);
$voucherCode['code'] = $Code;
$voucherCode['status'] = true;
}
echo json_encode($voucherCode);
I am always getting status value even providing correct value.
When i print_r table like
$resultAll = mysqli_query($conn, "SELECT * FROM VoucherCode");
$data2 = mysqli_fetch_all($resultAll);
print_r($data2);
I am able to see all data is there.
I am not sure what i am doing wrong here. Can anyone help me with this please.
Thanks in advance.