PHP Programming Guide: How to convert numbers into Chinese uppercase using PHP

[PHP Programming Guide: How to use PHP to convert numbers into Chinese uppercase]

When using PHP for development, sometimes you need to convert numbers into Chinese uppercase. This is especially important in some financial software or billing systems. This article will introduce how to use PHP to write code to achieve this function.

1. The basic principle of converting numbers into Chinese capitals

To convert numbers into Chinese capitals, it is necessary to continuously extract the corresponding Chinese numbers from the numbers and perform corresponding processing. The basic principles can be summarized in the following steps:

1. Split the number into digits: for example, 1234567, split into 1, 2, 3, 4, 5, 6, 7
2. Convert single digits, tens digits, hundreds digits, etc. into corresponding Chinese numbers: for example, 1 is converted into one, 2 is converted into two, and so on
3. Add units: According to the different digits, add "Billions", "ten thousand", "thousands" and other units
4. Handle special situations: such as handling zero

2. PHP code example

The following is A simple PHP function example that can convert numbers into Chinese uppercase:

function numToCn($num){
    $cns=array('零','一','二','三','四','五','六','七','八','九');
    $u8Splt = function($uan){
        $rtna = [];
        foreach(str_split(serialize($uan)) as $i=>$srl){
            if($i%2===0){ $rtna[]=$srl; }else{ end($rtna); $rtna[key($rtna)].=$srl; }
        }
        return $rtna;
    };
    $u8Dgt = array_reverse($u8Splt($num),true);
    $hNum = -1;
    $unit = array('元','十','百','千','万','十','百','千','亿','十','百','千','万');

    $u8Cn = '';

    foreach($u8Dgt as $d_K=>$d_V){
        if($d_V==='0'){
            if($hNum!==$d_K){ $u8Cn = "{$cns[$d_V]}{$u8Cn}"; ; }
        }elseif(ceil(($d_K-1)/4)===ceil(($hNum-1)/4)){}
        for($i=0;$i<(ceil(($d_K-1)/4)-ceil(($hNum-1)/4));$i++){ $u8Cn = $unit[4*ceil(($hNum-1)/4)-$i].$u8Cn; }
        $u8Cn = $cns[$d_V].$unit[$d_K].$u8Cn;
        $hNum = $d_K;
    }
    return $u8Cn=='元'?'零元':$u8Cn.'元';
}

3. Usage example:

$num = 1234567;
echo numToCn($num); // 输出一百二十三万四千五百六十七元

4. Summary

Through the introduction of this article, you can Learn how to convert numbers into Chinese uppercase using the PHP programming language. This can be useful for some finance-related projects. I hope the content of this article can be helpful to you, thank you for reading!

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