How to convert Chinese characters to Arabic numerals in php

php Method to convert Chinese characters to Arabic numbers: 1. Create a PHP sample file; 2. Initialize an array; 3. Split the string into units; 4. Convert the grouped strings into numbers and Just multiply by the unit.

The operating environment of this article: Windows 7 system, PHP version 7.1, DELL G3 computer

php How to convert Chinese characters to Arabic numerals?

php Chinese to Arabic numerals

Interview question, I wrote one that was full of loopholes and was despised by others, so I came back and spent the whole morning writing one, I tested it myself and it seems to be OK.

Thoughts

Such as Chinese numbers

Seven hundred and seventy-eight trillion, forty-seven trillion, seventy-five million, seven hundred and four One Thousand Four Hundred and Eighty-Six

If the red text is regarded as units, then after dividing it by these units, the other parts will be a number of ten hundred thousand. Multiply these numbers by their units and sum them up to get the result.

Code

function ch2num($str){ //单位数组用于循环遍历，单位顺序从大到小 $c = [ '万亿'=>1000000000000, '亿' => 100000000, '万' => 10000, ]; //中文替换数字规则，零没什么卵用；所以去掉 $b = [ '一' =>1, '二' =>2, '三' =>3, '四' =>4, '五' =>5, '六' =>6, '七' =>7, '八' =>8, '九' =>9, '零' =>'', ]; //替换数字 $str = str_replace(array_keys($b), array_values($b), $str); //结果 7百7十8万亿4千7百2十亿7千5百7十万4千4百8十 　　//如果字符串以十开头，前边加1 if(mb_strpos($str, '十' ,0 ,'utf-8') === 0) $str = '1'.$str; 　　 //初始化一个数组 $arr[] = array( 'str' => $str, //字符串 'unit' => 1, //单位 ); //将字符串按单位切分 foreach ($c as $key => $value) { $brr = []; foreach ($arr as $item) { if(strpos($item['str'], $key)){ $sun = explode($key, $item['str'],2); $brr[] = [ 'str' => $sun[0], 'unit' => $value, ]; $brr[] = [ 'str' => $sun[1], 'unit' => $item['unit'], ]; }else{ $brr[] = $item; } } $arr = $brr; } /* 结果 ( [0] => Array ( [str] => 7百7十8 [unit] => 1000000000000 ) [1] => Array ( [str] => 4千7百2十 [unit] => 100000000 ) [2] => Array ( [str] => 7千5百7十 [unit] => 10000 ) [3] => Array ( [str] => 4千4百8十6 [unit] => 1 ) )*/ //遍历求和 $sum = 0; foreach ($arr as $item) { $sum += getNum($item['str'],$item['unit']); } return $sum; } //将分组后的字符串转化成数字，并乘以单位 function getNum($str,$st){ //倍数 $a = [ '千'=>1000, '百'=>100, '十'=>10 ]; //开始值 $num = 0; //当前值所在位数 $step = 1; //单位 $un = 1; $arr = preg_split('/(?
      

      
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