php - 在 PHP 中将单词转换为数字

Question

我正在尝试将写为单词的数值转换为整数。例如，“iPhone有二十三万七百八十三个应用程序”会成为“iPhone 作为 230783 个应用程序”

在我开始编码之前，我想知道是否存在任何用于此转换的函数/代码。

Answer 1

有很多页面讨论从数字到单词的转换。反方向没有那么多。我能找到的最好的是 Ask Yahoo 上的一些伪代码。见 http://answers.yahoo.com/question/index?qid=20090216103754AAONnDz一个不错的算法:

Well, overall you are doing two things: Finding tokens (words that translates to numbers) and applying grammar. In short, you are building a parser for a very limited language.

The tokens you would need are:

POWER: thousand, million, billion
HUNDRED: hundred
TEN: twenty, thirty... ninety
UNIT: one, two, three, ... nine,
SPECIAL: ten, eleven, twelve, ... nineteen

(drop any "and"s as they are meaningless. Break hyphens into two tokens. That is sixty-five should be processed as "sixty" "five")

Once you've tokenized your string, move from RIGHT TO LEFT.

1. Grab all the tokens from the RIGHT until you hit a POWER or the whole string.

2. Parse the tokens after the stop point for these patterns:

   SPECIAL
   TEN
   UNIT
   TEN UNIT
   UNIT HUNDRED
   UNIT HUNDRED SPECIAL
   UNIT HUNDRED TEN
   UNIT HUNDRED UNIT
   UNIT HUNDRED TEN UNIT

   (This assumes that "seventeen hundred" is not allowed in this grammar)

   This gives you the last three digits of your number.

3. If you stopped at the whole string you are done.

4. If you stopped at a power, start again at step 1 until you reach a higher POWER or the whole string.