'未确认', self::STATE_ONE => '已确认', ]; const type_one = 1; // 收款 const type_two = 2; // 坏账 const type_three = 3; // 退款 const type_four = 4; // 补收 public static $model_type = [ self::type_one => '收款', self::type_two => '坏账', self::type_three => '退款', self::type_four => '补收', ]; const data_type_one = 1; // 合同 const data_type_two = 2; // 采购 public static $data_type = [ self::data_type_one => '合同', self::data_type_two => '采购', ]; }