Адаптиране на моя календар, за да работи за дати през 2 месеца

В крайна сметка преработих изцяло моята календарна система, за да накарам това да работи по начина, по който исках:

//Labels
$dayLabels          = array("Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday");
$dayMiniLabels      = array("Mon","Tue","Wed","Thu","Fri","Sat","Sun");
$monthLables        = array("January","February","March","April","May","June","July","August","September","October","November","December");

$forceMonth = $_GET['m'];
$forceYear = $_GET['y'];

$currentDate            = date("Y-m-d");
$explodeDate        = explode("-", $currentDate);

//Currents
if(isset($forceMonth)) {
    if(strlen($forceMonth) == 1) {
        $forceMonth     = sprintf("%02d", $forceMonth);
    };
    $currentMonth   = $forceMonth;
} else {
    $currentMonth   = date("m");
};

if(isset($forceYear)) {
    if(strlen($forceYear) == 2) {
        $dt                 = DateTime::createFromFormat('y', $forceYear);
        $forceYear  = $dt->format('Y');
    };
    $currentYear        = $forceYear;
} else {
    $currentYear        = date("Y");
};

//variables
$monthStart             = date($currentYear. '-' .$currentMonth. '-01');
$monthEnd               = date($currentYear. '-' .$currentMonth. '-t');

$prevMonth          = sprintf("%02d", $currentMonth - 1);
$nextMonth          = sprintf("%02d", $currentMonth + 1);
$prevYear           = sprintf("%02d", $currentYear - 1);
$nextYear           = sprintf("%02d", $currentYear + 1);

$daysInMonth        = cal_days_in_month(CAL_GREGORIAN, $currentMonth, $currentYear);
$firstDayofMonth    = date("D", strtotime("01-$currentMonth-$currentYear"));
$firstDayofMonth    = array_search($firstDayofMonth, $dayMiniLabels);
$firstDayofMonth    = $firstDayofMonth;

if($firstDayofMonth == 0) {
    $firstDayofMonth = 7;
};

$bookings           = array();
$s                      = new DateTime($monthStart);
$e                      = new DateTime("$monthEnd + 1 days");
$oneday                 = new DateInterval('P1D');
$dp                         = new DatePeriod($s, $oneday, $e);

foreach ($dp as $d) {
    $bookings[$d->format('Y-m-d')] = '';   
};

$sql = "SELECT userID
         , bookingStart
         , bookingEnd 
        FROM bookings 
        WHERE machineID = ?
          AND bookingStart < ?
          AND bookingEnd > ?";
$getBookings = $con->prepare($sql);
$getBookings->bind_param('iss', $_GET['id'], $monthEnd, $monthStart);
$getBookings->execute();
$getBookings->bind_result($uid, $bstart, $bend);

while ($getBookings->fetch()) {
    $s                  = new DateTime(max($bstart, $monthStart));
    $e                  = new DateTime(min($bend, $monthEnd));
    $e->modify('+1 day');
    $dp = new DatePeriod($s, $oneday, $e);
    foreach ($dp as $d) {
        $bookings[$d->format('Y-m-d')] = $uid;
    };
};

//counters
$dayCount   = 0;
$startMonth     = 0;
$calDate        = 0;

<table class="full grid dayLabels">
    <tr>
    <?php
        foreach($dayLabels as $day) {
            echo '<td class="day"><p>' .$day. '</p></td>';
        };
    ?>
    </tr>
</table>
<table id="calendar" class="full grid calendar">
    <?php
        foreach($bookings as $date) {
            $dayCount++;
            $calDate++;
            $calDate = sprintf("%02d", $calDate);

            if($dayCount == 1) {
                echo '<tr>';
            };

            if($firstDayofMonth != 7) {
                while($startMonth < $firstDayofMonth) {
                    echo '<td class="padding"></td>';
                    $startMonth++;
                    $dayCount++;
                    $temp_dayCount = sprintf("%02d", $dayCount);
                    $dayCount = $temp_dayCount;
                };
            };

            if($date != "") {
                if($getUserName = $con->prepare("SELECT userFirst,userLast,userEmail FROM users WHERE userID=?")) {
                    $getUserName->bind_param("i", $date);
                    $getUserName->execute();
                    $getUserName->bind_result($userFirst,$userLast,$userEmail);
                    while($getUserName->fetch()) {
                        echo '
                            <td class="booked">
                                <p>' .$calDate. '</p>
                                <p>' .$userFirst. ' ' .$userLast. '</p>
                            </td>
                        ';
                    };
                };
                $getUserName->close();
            } else {
                echo '
                    <td>
                        <p>' .$calDate. '</p>
                ';

                if(isset($_SESSION['userID']) && $_SESSION['userPerms'] > 0) {
                    echo '
                        <a class="bookNow"></a>
                        <form class="book" method="post" action="./action.php?a=book">
                            <input name="userID" type="hidden" value="' .$_SESSION['userID']. '" required />
                            <input name="machineID" type="hidden" value="' .$id. '" required />
                            <div class="options">
                                <a class="fa fa-close"></a>
                            </div>
                            <p>Start Date</p>
                            <input name="startDate" type="text" value="' .$calDate. '-' .$currentMonth. '-' .$currentYear. '" autofocus required />
                            <p>End Date</p>
                            <input name="endDate" type="text" value="' .$calDate. '-' .$currentMonth. '-' .$currentYear. '" required />
                            <p>Project Number</p>
                            <input name="projectNumber" type="number" placeholder="Project Number" required />
                            <button class="confirm" type="submit">Submit</button>
                        </form>
                    ';
                };

                echo '
                    </td>
                ';
            };

            if($dayCount == 7) {
                echo '</tr>';
                $dayCount = 0;
            };
        };
    ?>
</table>