Created
March 16, 2018 11:20
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| <?php | |
| use Carbon\Carbon; | |
| /** | |
| * Trait PeriodMultiplier | |
| * Used in cases when class has | |
| */ | |
| trait PeriodMultiplierTrait | |
| { | |
| /** | |
| * Calculate float amount of months | |
| * | |
| * @param Carbon $startDate | |
| * @param Carbon $endDate | |
| * | |
| * @return float | |
| */ | |
| protected function calculatePeriodMultiplier(Carbon $startDate, Carbon $endDate) : float | |
| { | |
| $startDay = $startDate->day; | |
| $endDay = $endDate->day; | |
| $startDateBase = (clone $startDate)->addDays(1 - $startDay); | |
| $endDateBase = (clone $endDate)->addDays(1 - $endDay); | |
| if ($startDay === 1 && $endDay === $endDate->daysInMonth && $startDate->month === $endDate->month) { | |
| $diffInYears = $startDate->diff($endDate)->format('%r%y'); | |
| return $diffInYears * 12 + 1; | |
| } | |
| $startDate->setTime(0, 0, 0); | |
| $endDate->setTime(0, 0, 0); | |
| if ($startDate->day <= $endDate->day && ($startDate->day !== $startDate->daysInMonth || $endDate->day !== $endDate->daysInMonth)) { //strange PHP DateInterval behaviour | |
| $monthDiff = $startDate->diffInMonths($endDate, false); //TODO update this | |
| } else { | |
| $monthDiff = $startDate->diffInMonths($endDate, false) + 1; | |
| } | |
| $amount = $monthDiff - | |
| ($startDay - 1) / ($startDateBase->diffInDays((clone $startDateBase)->addMonth())) + | |
| ($endDay - 1) / ($endDateBase->diffInDays((clone $endDateBase)->addMonth())); | |
| return round($amount, 3); | |
| } | |
| } |
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