<?php
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namespace PhpOffice\PhpSpreadsheet\Calculation\Financial;
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use DateTimeInterface;
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use PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
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use PhpOffice\PhpSpreadsheet\Calculation\Financial\Constants as FinancialConstants;
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use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError;
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class Helpers
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{
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/**
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* daysPerYear.
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*
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* Returns the number of days in a specified year, as defined by the "basis" value
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*
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* @param int|string $year The year against which we're testing
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* @param int|string $basis The type of day count:
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* 0 or omitted US (NASD) 360
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* 1 Actual (365 or 366 in a leap year)
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* 2 360
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* 3 365
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* 4 European 360
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*
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* @return int|string Result, or a string containing an error
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*/
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public static function daysPerYear($year, $basis = 0): string|int
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{
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if (!is_numeric($basis)) {
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return ExcelError::NAN();
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}
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switch ($basis) {
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case FinancialConstants::BASIS_DAYS_PER_YEAR_NASD:
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case FinancialConstants::BASIS_DAYS_PER_YEAR_360:
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case FinancialConstants::BASIS_DAYS_PER_YEAR_360_EUROPEAN:
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return 360;
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case FinancialConstants::BASIS_DAYS_PER_YEAR_365:
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return 365;
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case FinancialConstants::BASIS_DAYS_PER_YEAR_ACTUAL:
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return (DateTimeExcel\Helpers::isLeapYear($year)) ? 366 : 365;
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}
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return ExcelError::NAN();
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}
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/**
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* isLastDayOfMonth.
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*
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* Returns a boolean TRUE/FALSE indicating if this date is the last date of the month
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*
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* @param DateTimeInterface $date The date for testing
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*/
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public static function isLastDayOfMonth(DateTimeInterface $date): bool
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{
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return $date->format('d') === $date->format('t');
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}
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}
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