'启用', 2 => '禁用', ]; public static $field = ['title','id','code','crt_id','crt_time','size','mark','is_use','type','type_2','power']; const type_one = 1; const type_two = 2; const type_three = 3; public static $type = [ self::type_one => '电子设备', self::type_two => '机器设备', self::type_three => '办公设备', ]; public static $type_2 = [ self::type_one => '专用', self::type_two => '共用', ]; }