如何将单词描述的数字替换回数字？

Question

我正在设置一个程序，它读取用户的输入消息并用单词分解响应。

为了使它适应，我需要一个字符串描述的数字变换，如one million，35 million，230 thousand，回1000000，35000000，20000。

我已经尝试了几种方法，但找不到可用的工具。

例如用户帖子one million：

<?php 
$string=mysql_escape_string($_POST['message']; 
// Do something to the string to transform one million into 1000000 
return number 
?> 

Answer 1

检查Converting words to numbers in PHP：

/** 
* Convert a string such as "one hundred thousand" to 100000.00. 
* 
* @param string $data The numeric string. 
* 
* @return float or false on error 
*/ 
function wordsToNumber($data) { 
    // Replace all number words with an equivalent numeric value 
    $data = strtr(
     $data, 
     array(
      'zero'  => '0', 
      'a'   => '1', 
      'one'  => '1', 
      'two'  => '2', 
      'three'  => '3', 
      'four'  => '4', 
      'five'  => '5', 
      'six'  => '6', 
      'seven'  => '7', 
      'eight'  => '8', 
      'nine'  => '9', 
      'ten'  => '10', 
      'eleven' => '11', 
      'twelve' => '12', 
      'thirteen' => '13', 
      'fourteen' => '14', 
      'fifteen' => '15', 
      'sixteen' => '16', 
      'seventeen' => '17', 
      'eighteen' => '18', 
      'nineteen' => '19', 
      'twenty' => '20', 
      'thirty' => '30', 
      'forty'  => '40', 
      'fourty' => '40', // common misspelling 
      'fifty'  => '50', 
      'sixty'  => '60', 
      'seventy' => '70', 
      'eighty' => '80', 
      'ninety' => '90', 
      'hundred' => '100', 
      'thousand' => '1000', 
      'million' => '1000000', 
      'billion' => '1000000000', 
      'and'  => '', 
     ) 
    ); 

    // Coerce all tokens to numbers 
    $parts = array_map(
     function ($val) { 
      return floatval($val); 
     }, 
     preg_split('/[\s-]+/', $data) 
    ); 

    $stack = new SplStack; // Current work stack 
    $sum = 0; // Running total 
    $last = null; 

    foreach ($parts as $part) { 
     if (!$stack->isEmpty()) { 
      // We're part way through a phrase 
      if ($stack->top() > $part) { 
       // Decreasing step, e.g. from hundreds to ones 
       if ($last >= 1000) { 
        // If we drop from more than 1000 then we've finished the phrase 
        $sum += $stack->pop(); 
        // This is the first element of a new phrase 
        $stack->push($part); 
       } else { 
        // Drop down from less than 1000, just addition 
        // e.g. "seventy one" -> "70 1" -> "70 + 1" 
        $stack->push($stack->pop() + $part); 
       } 
      } else { 
       // Increasing step, e.g ones to hundreds 
       $stack->push($stack->pop() * $part); 
      } 
     } else { 
      // This is the first element of a new phrase 
      $stack->push($part); 
     } 

     // Store the last processed part 
     $last = $part; 
    } 

    return $sum + $stack->pop(); 
}