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<?php
namespace Safe;
use Safe\Exceptions\CalendarException;
/**
* Return the Julian Day for a Unix timestamp
* (seconds since 1.1.1970), or for the current day if no
* timestamp is given. Either way, the time is regarded
* as local time (not UTC).
*
* @param int $timestamp A unix timestamp to convert.
* @return int A julian day number as integer.
* @throws CalendarException
*
*/
function unixtojd(int $timestamp = null): int
{
error_clear_last();
if ($timestamp !== null) {
$result = \unixtojd($timestamp);
} else {
$result = \unixtojd();
}
if ($result === false) {
throw CalendarException::createFromPhpError();
}
return $result;
}
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