What functions in PHP can be used for date calculations while considering weekends?

When performing date calculations in PHP while considering weekends, we need to account for skipping over Saturdays and Sundays. One way to do this is by using the `DateTime` class along with the `modify()` method to skip weekends when adding or subtracting days from a date. 

function addWeekdaysToDate($date, $days) {
    $dateObj = new DateTime($date);
    
    while ($days > 0) {
        $dateObj->modify('+1 day');
        
        if ($dateObj->format('N') < 6) {
            $days--;
        }
    }
    
    return $dateObj->format('Y-m-d');
}

// Example usage
$date = '2022-01-10';
$daysToAdd = 5;
$newDate = addWeekdaysToDate($date, $daysToAdd);
echo $newDate; // Output: 2022-01-17

Keywords

PHP date calculations weekends working days date functions

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