Order by After Where 子句在 MySQLi PHP 中不起作用

Question

Order By After Where is not returning results below is the code and screenshot of not running code.

SELECT * from `SalesMessages` where `ThreadId`= ? ORDER BY `id` desc Limit 25;

However if I remove bind params it works fine.

SELECT * from `SalesMessages` where `ThreadId`=63 ORDER BY `id` desc Limit 25;

Below is screen shot from mySql

mysql query and results

HERE IS HOW I WROTE MYSQLI Code

    global $conn;
    $arr = array();
    mysqli_set_charset( $conn, 'utf8'); // ALREADY TRIED COMMENTING THIS LINE
    $stmt = $conn->prepare($query);
    $stmt->bind_param('i', $ThreadId);
    try {
        if ($stmt->execute()) {
            $result = $stmt->get_result();
            while ($row = $result->fetch_assoc()) {
                ..SOME CODE..
            }
            if (count($arr) > 0)
                return $arr;
        } else {
            throw "QueryError";
        }
    } catch (Throwable $e) {
        print_r($e);
    }
}

Here is the structure of Table

DATA BASE STRUCTURE

I am expecting results from mysql in PHP code as array.

Answer 1

It was connection Error guys Which was using another database which does not had records. Everything else is working fine now. Actually the table in connected database had no record in required table.