array(0) {
}
<br />
<b>Warning</b>:  mysqli::__construct(): (HY000/1045): Access denied for user 'tongfeiz'@'webdev.iyaserver.com' (using password: YES) in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>11</b><br />
<br />
<b>Warning</b>:  Undefined array key "course_name" in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>17</b><br />
Course Name: <br><br />
<b>Warning</b>:  Undefined array key "date" in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>18</b><br />
Date: <br><br />
<b>Warning</b>:  Undefined array key "start_time" in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>19</b><br />
Start Time: <br><br />
<b>Warning</b>:  Undefined array key "end_time" in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>20</b><br />
End Time: <br><br />
<b>Warning</b>:  Undefined array key "location" in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>21</b><br />
Location: <br><br />
<b>Warning</b>:  Undefined array key "id" in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>22</b><br />
ID: <br><br />
<b>Warning</b>:  Undefined array key "date" in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>27</b><br />
<br />
<b>Warning</b>:  Undefined array key "start_time" in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>28</b><br />
<br />
<b>Warning</b>:  Undefined array key "end_time" in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>29</b><br />
<br />
<b>Warning</b>:  Undefined array key "location" in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>30</b><br />
<br />
<b>Warning</b>:  Undefined array key "id" in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>31</b><br />
<hr>UPDATE class_schedule
        SET 
        
        date = '', 
        start_time = '', 
        end_time = '', 
        location_id = 
        WHERE schedule_id = <hr><br />
<b>Fatal error</b>:  Uncaught Error: mysqli object is already closed in /home/tongfeiz/public_html/acad276/2024sep30/update4.php:35
Stack trace:
#0 /home/tongfeiz/public_html/acad276/2024sep30/update4.php(35): mysqli-&gt;query('UPDATE class_sc...')
#1 {main}
  thrown in <b>/home/tongfeiz/public_html/acad276/2024sep30/update4.php</b> on line <b>35</b><br />