Error: SELECT bookedseat from bookings where sdate=2018-04-26 and stime=5PM Unknown column '5PM' in 'where clause' : <p><a href="https://i.stack.imgur.com/Rkpo4.jpg" rel="nofollow noreferrer">This is the html form code</a></p>

<p><a href="https://i.stack.imgur.com/OiYlQ.jpg" rel="nofollow noreferrer">And this is the php for the above form.After executing this,I get an error saying " Error: SELECT bookedseat from bookings where sdate=2018-04-26 and stime=5PM
Unknown column '5PM' in 'where clause' "</a></p>

<p>Why is it?</p>
