Lua表将值转换为变量，以在接收文本消息后获取

我不确定我是否正确理解了你的需求，但是请查看这个函数。

local table =
{
one = {"one", "two", "three"},
two = {"four", "five", "six"},
three = {"seven", "eight", "nine"},
}

local x = nil
local tab = nil
local sentence_1 = 'Now its day six and its sunny'
local sentence_2 = 'Now its day two and its sunny'

function search_word(sentence, words_table)
  for key, words in pairs(words_table) do
      for _, word in pairs(words) do
          if string.match(sentence, word) then
            return word, key
          end
      end
  end
end

x, tab = search_word(sentence_1, table)

print(x, tab)
-- six  two

x, tab = search_word(sentence_2, table)

print(x, tab)
-- two  one

search_word函数接受两个参数：句子和含有单词的表格，并返回两个值-第一个是找到的单词，第二个是包含该单词的表格。