Echo date interval in a PHP calendar - php

Question

I am creating a calendar and I am in a dire need of a solution. There are records of information in the database and the code reads these records. Two columns hold a date from and a date to. I have to output these dates that appear in the database in different colors. I have tried many times. And the problem is that the code outputs either the last record that it can fetch in the database or all the date periods however these periods get duplicated based on how many rows are there in the database.Here is the output I get
<div id="calender_section_top">
<ul>
<li>Mon</li>
<li>Tue</li>
<li>Wed</li>
<li>Thu</li>
<li>Fri</li>
<li>Sat</li>
<li>Sun</li>
</ul>
</div>
<div id="calender_section_bot">
<ul>
<?php
$dateYear = ($year != '') ? $year : date("Y");
$dateMonth = ($month != '') ? $month : date("m");
$date = $dateYear . '-' . $dateMonth . '-01';
$currentMonthFirstDay = date("N", strtotime($date));
$totalDaysOfMonth = cal_days_in_month(CAL_GREGORIAN, $dateMonth, $dateYear);
$totalDaysOfMonthDisplay = ($currentMonthFirstDay == 7) ? ($totalDaysOfMonth) : ($totalDaysOfMonth + $currentMonthFirstDay);
$boxDisplay = ($totalDaysOfMonthDisplay <= 35) ? 35 : 42;
$dayCount = 1;
for ($cb = 1; $cb <= $boxDisplay; $cb++) {
if (($cb >= $currentMonthFirstDay || $currentMonthFirstDay == 7) && $cb <= ($totalDaysOfMonthDisplay - 1)) {
$duh = array();
array_push($duh, $dayCount);
// Current date
$currentDate = $dateYear . '-' . $dateMonth . '-' . $dayCount;
$currentDate = strtotime($currentDate);
$eventNum = 0;
$sql = ("SELECT * FROM booking_2 GROUP BY date_from ORDER BY COUNT(book2_id) DESC");
$result = $this->connect()->query($sql);
$eventNum = $result->num_rows;
if ($eventNum > 0) {
while ($row = $result->fetch_assoc()) {
$date_from = $row['date_from'];
$date_to = $row['date_to'];
$time_from = strtotime($date_from);
$time_fromm = idate('d', $time_from);
$time_to = strtotime($date_to);
$time_too = idate('d', $time_to);
if ($currentDate >= $time_from && $currentDate <= $time_to) {
for ($i = $time_from; $i <= $time_to; $i++) {
$cope = array();
array_push($cope, $dayCount);
}
echo '<li id="' . $row['book2_id'] . '" style="background-color:#FF3232 !important;" date="' . date("Y-m-d H:i:s", $currentDate) . '" class="date_cell"><span>' . implode($cope) . '</span>';
}
}
if (!($currentDate >= $time_from && $currentDate <= $time_to)) {
for ($g = $time_from; $g <= $time_to; $g++) {
$duh = array();
array_push($duh, $dayCount);
}
echo '<li date="' . date("Y-m-d H:i:s", $currentDate) . '" class="date_cell"><span>' . implode($duh) . '</span>';
}
}
else {
echo '<li date="' . date("Y-m-d H:i:s", $currentDate) . '" class="date_cell"><span>' . implode($duh) . '</span>';
}
echo '</li>';
$dayCount++;
?>
<?php
}
else { ?>
<li><span> </span></li>
<?php
}
} ?>
</ul>
</div>
</div>
sorry for TL;DR. But really need help with this. I have tried all the ways I know so if you have a solution can you please be sure that this will work? I believe this is a hard problem to find a solution to.