php 常用助手函数

<?php

if (!function_exists('bcSum')) {
    function bcSum($scale, ...$args): string
    {
        $result = '0.00';
        foreach ($args as $arg) {
            $result = bcadd($result, $arg, $scale);
        }
        return $result;
    }
}

if (!function_exists('yuanToWan')) {
    function yuanToWan($yuan): float
    {
        return floatval(bcdiv($yuan, 10000, 6));
    }
}


if (!function_exists('calCompleteDegree')) {
    function calCompleteDegree($actual, $target, $scale = 4): float|null
    {
        if (bccomp($target, '0.00', $scale + 1) === 0) {
            return null;
        } elseif (bccomp($target, '0.00', $scale + 1) > 0) {
            return round(bcdiv($actual, $target, $scale + 1), $scale);
        } else {
            return round(
                bcdiv(
                    bcsub(bcmul(2, $target, $scale + 1), $actual, $scale + 1),
                    $target,
                    $scale + 1
                ),
                $scale
            );
        }
    }
}

if (!function_exists('calPercentage')) {
    function calPercentage($num1, $num2, $scale = 4): float|string
    {
        return bccomp($num2, '0.00', $scale + 1) !== 0
            ? round(bcdiv($num1, $num2, $scale + 1), $scale) : '';
    }
}

if (!function_exists('arrayKsort')) {
    function arrayKsort(&$array): bool
    {
        if (!isset($array) || !is_array($array)) {
            return false;
        }

        foreach ($array as $k => $v) {
            unset($array[$k]);
            $key = mb_convert_encoding($k, 'GBK', 'UTF-8');
            $array[$key] = $v;
        }
        ksort($array);
        foreach ($array as $k => $v) {
            unset($array[$k]);
            $key = mb_convert_encoding($k, 'UTF-8', 'GBK');
            $array[$key] = $v;
        }
        return true;
    }
}