php - Mysqli prepared statements fetch_array -


i trying below code working not working , giving me below error 

fatal error: call member function bind_param() on non-object in

is there way fetch array prepared statements?

    if (move_uploaded_file($_files['file_to_upload']['tmp_name'], $final_uploads_location))              {                     $stmt = $mysqli->prepare("select * test  `username` = ? , `age` = ? ");                     $stmt->bind_param('ss', $username, $age);                     $stmt->store_result();                     $stmt->execute();                      if($stmt->num_rows < 1)                 {                     $insert = $mysqli->prepare("insert `test`(`username`, `age`, ) values(?,?)");                     $insert->bind_param('ss', $username, $age);                     $insert->execute();                  }                 else                 {                     $check = mysqli_fetch_array($stmt);                      global $identity;                     }             }

you query return false after preparing(mysqli::prepare). means query has error: undefined fields, unexisting table or something.


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