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Direktori : /home/ngwcolle/www/admin/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Shared/ |
Current File : /home/ngwcolle/www/admin/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Shared/TimeZone.php |
<?php namespace PhpOffice\PhpSpreadsheet\Shared; use DateTimeZone; use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException; class TimeZone { /** * Default Timezone used for date/time conversions. */ protected static string $timezone = 'UTC'; /** * Validate a Timezone name. * * @param string $timezoneName Time zone (e.g. 'Europe/London') * * @return bool Success or failure */ private static function validateTimeZone(string $timezoneName): bool { return in_array($timezoneName, DateTimeZone::listIdentifiers(DateTimeZone::ALL_WITH_BC), true); } /** * Set the Default Timezone used for date/time conversions. * * @param string $timezoneName Time zone (e.g. 'Europe/London') * * @return bool Success or failure */ public static function setTimeZone(string $timezoneName): bool { if (self::validateTimeZone($timezoneName)) { self::$timezone = $timezoneName; return true; } return false; } /** * Return the Default Timezone used for date/time conversions. * * @return string Timezone (e.g. 'Europe/London') */ public static function getTimeZone(): string { return self::$timezone; } /** * Return the Timezone offset used for date/time conversions to/from UST * This requires both the timezone and the calculated date/time to allow for local DST. * * @param ?string $timezoneName The timezone for finding the adjustment to UST * @param float|int $timestamp PHP date/time value * * @return int Number of seconds for timezone adjustment */ public static function getTimeZoneAdjustment(?string $timezoneName, $timestamp): int { $timezoneName = $timezoneName ?? self::$timezone; $dtobj = Date::dateTimeFromTimestamp("$timestamp"); if (!self::validateTimeZone($timezoneName)) { throw new PhpSpreadsheetException("Invalid timezone $timezoneName"); } $dtobj->setTimeZone(new DateTimeZone($timezoneName)); return $dtobj->getOffset(); } }