54 lines
1.1 KiB
PHP
54 lines
1.1 KiB
PHP
<?php
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namespace App\Support;
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/**
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* Helper math
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*/
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class Math
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{
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/**
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* Determine from the base rate, if we want to return the overridden rate
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* or if the overridden rate is a percentage, then return that amount
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*
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* @param $base_rate
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* @param $override_rate
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*
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* @return float|null
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*/
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public static function applyAmountOrPercent($base_rate, $override_rate = null): ?float
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{
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if (!$override_rate) {
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return $base_rate;
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}
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// Not a percentage override
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if (substr_count($override_rate, '%') === 0) {
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return $override_rate;
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}
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return static::addPercent($base_rate, $override_rate);
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}
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/**
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* Add/subtract a percentage to a number
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*
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* @param $number
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* @param $percent
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*
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* @return float
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*/
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public static function addPercent($number, $percent): float
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{
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if (!is_numeric($number)) {
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$number = (float) $number;
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}
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if (!is_numeric($percent)) {
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$percent = (float) $percent;
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}
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return $number + ($number * ($percent / 100));
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}
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}
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