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HomeBackend DevelopmentPHP Tutorialphp实现中文转数目字,实现方式很智能很php

php实现中文转数字,实现方式很智能很php

分享一个辅助函数,使用php尽可能识别出字符串中的数字,实现效果如下。

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echo checkNatInt('九百六十万'); //普通中文数字,9600000
echo checkNatInt('壹亿柒仟万零捌佰肆拾'); //大写中文数字,170000840
 
 
echo checkNatInt('学好PHP拿百万年薪'); //句子中的数字, 1000000
echo checkNatInt('今年春运发送人次达26亿'); //数字和汉字混合出现,2600000000
 
echo checkNatInt('两只小蜜蜂'); //口语化数字,2
echo checkNatInt('万万没想到'); //复古的表达方式,100000000

 

注意事项

  1. 不支持小数

  2. 不支持大于PHP_INT_MAX的数

 

部分实现代码

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function checkNatInt($str) {
    $map array(
        '一' => '1','二' => '2','三' => '3','四' => '4','五' => '5','六' => '6','七' => '7','八' => '8','九' => '9',
        '壹' => '1','贰' => '2','叁' => '3','肆' => '4','伍' => '5','陆' => '6','柒' => '7','捌' => '8','玖' => '9',
        '零' => '0','两' => '2',
        '仟' => '千','佰' => '百','拾' => '十',
        '万万' => '亿',
    );  
 
    $str str_replace(array_keys($map), array_values($map), $str);
    $str = checkString($str'/([\d亿万千百十]+)/u');
 
    $func_c2i function ($str$plus = false) use(&$func_c2i) {
        if(false === $plus) {
            $plus array('亿' => 100000000,'万' => 10000,'千' => 1000,'百' => 100,'十' => 10,);
        }   
 
        $i = 0;
        if($plus)
        foreach($plus as $k => $v) {
            $i++;
            if(strpos($str$k) !== false) {
                $ex explode($k$str, 2); 
                $new_plus array_slice($plus$i, null, true);
                $l $func_c2i($ex[0], $new_plus);
                $r $func_c2i($ex[1], $new_plus);
                if($l == 0) $l = 1;
                return $l $v $r;
            }
        }
 
        return (int)$str;
    }
    return $func_c2i($str);
  }
 
  //来自uct php微信开发框架,其中的checkString函数如下
  function checkString($var$check ''$default '') {
    if (!is_string($var)) {
        if(is_numeric($var)) {
            $var = (string)$var;
        }
        else {
            return $default;
        }
    }
    if ($check) {
         return (preg_match($check$var$ret) ? $ret[1] : $default);
    }
 
    return $var;
}
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