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Try this code: Datas.php
<?php
$conn = mysqli_connect("localhost","root","","players");
$sqlQuery = "SELECT id, name FROM players_attributes ORDER BY id";
$result = mysqli_query($conn,$sqlQuery);
$data = array();
foreach ($result as $row) {
echo "<option data-id='".$row['id']."' value='" . $row['name'] ."'>";
}
echo json_encode(array('data'=>$row));
?>
Source:stackexchange.com