问以PHP表示的工作日(星期一至星期五)

EN

echo date ( 'Y-m-j' , strtotime ( '3 weekdays' ) );

    function _getBusinessDayOfMonth( $days ) { 
        $time = strtotime(date("m/1/Y 00:00")); //finding # of business days after 1st of the month
        $i = 0; //start with zero
        while ($i < $days) { //loop through until reached the amount of weekdays
            $time = strtotime("+1 day", $time); //Increase day by 1
            if (date("N", $time) < 6) { //test if M-F
                $i++; //Increase by 1
            }
        }
        echo date("m/d/Y", $time);
    }

public function addWorkingDays($date, $day)
{

    if (!($date instanceof \DateTime) || is_string($date)) {
        $date = new \DateTime($date);
    }

    if ($date instanceof \DateTime) {
        $newDate = clone $date;
    }

    if ($day == 0) {
        return $newDate;
    }

    $i = 1;

    while ($i <= abs($day)) {

        $newDate->modify(($day > 0 ? ' +' : ' -') . '1 day');

        $next_day_number = $newDate->format('N');

        if (!in_array($next_day_number, [6, 7])) {
            $i++;
        }

    }

    return $newDate;

}