php date time

calendar.php

<?php
$date = '2018-03-01';
$end = '2018-09-' . date('t', strtotime($date)); //get end date of month
?>
<table>
    <tr>
    <?php while(strtotime($date) <= strtotime($end)) {
        $day_num = date('d', strtotime($date));
        $day_name = date('l', strtotime($date));
        $month = date('M', strtotime($date));
        $year = date('y', strtotime($date));
        $week = date('W', strtotime($date));
        
        $date = date("Y-m-d", strtotime("+1 day", strtotime($date)));
        echo "<tr><td>$week - $day_num - $day_name - $month - $year</td></tr>";
    
    }
    ?>
    </tr>
</table>