array(1) {
  [0] => array(4) {
    ["id"] => int(14)
    ["title"] => string(15) "导热粘接胶"
    ["thumb"] => string(68) "/public/uploads/images/20260807/ffd58e400eaadda3aedbd64bc5e3589d.png"
    ["class_id"] => int(173)
  }
}