PHP utility tool: simple implementation of the function of converting numbers to uppercase

PHP Utility Tool: Simple implementation of the function of converting numbers to uppercase

In daily development, we often encounter the need to convert numbers to uppercase, such as the conversion of amounts to uppercase wait. In PHP, we can implement this function through simple code. Let's take a look at the specific implementation method.

First, we define a function numToChinese($num), where $num is the number to be converted. The code is as follows:

function numToChinese($num) {
    $chineseNumArr = array('零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖');
    $unitArr = array('拾', '佰', '仟', '万', '亿', '兆', '京', '垓');

    $numStr = strval($num);
    $len = strlen($numStr);
    
    if($len > count($chineseNumArr)) {
        return '数字太大，无法转换';
    }

    $result = '';
    $lastZero = false; // 上一个字符是否是零

    for ($i = 0; $i < $len; $i++) {
        $digit = $chineseNumArr[$numStr[$i]];
        if ($digit == '零') {
            // 当前数字为零
            $lastZero = true;
            continue;
        } else {
            if($lastZero) {
                $result .= '零';
                $lastZero = false;
            }
            $result .= $digit;
            if($len - $i > 1) {
                $result .= $unitArr[$len - $i - 2];
            }
        }
    }

    return $result;
}

// 测试
$num = 12345;
echo numToChinese($num); // 输出 壹万贰仟叁佰肆拾伍

In this code, we first define an array containing numbers corresponding to Chinese uppercase $chineseNumArr and a unit array $unitArr, and then We convert the number to be converted into a string and convert it according to the length of the string. We traverse each digit of the number, replace it according to the Chinese capital corresponding to the number, and add the corresponding unit. At the same time, we handle the case of multiple zeros in the number to ensure that the final result is accurate.

Through the above code implementation, we can easily convert numbers into Chinese uppercase letters. This simple function may be often encountered in daily development. I hope this implementation can help developers handle similar needs more efficiently.

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