select from one table, count from another where id's linked

Question

heres my code:

$sql = mysql_query("select c.name, c.address, c.postcode, c.dob, c.mobile, c.email, 
                    count(select * from bookings where b.id_customer = c.id) as purchased, count(select * from bookings where b.the_date > $now) as remaining, 
                    from customers as c, bookings as b 
                    where b.id_customer = c.id
                    order by c.name asc");

you can see what i am trying to do, but im not sure how to write this query properly.

heres the error i get:

Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource

heres my mysql_fetch_assoc:

<?php

while ($row = mysql_fetch_assoc($sql))
{
    ?>

    <tr>
    <td><?php echo $row['name']; ?></td>
    <td><?php echo $row['mobile']; ?></td>
    <td><?php echo $row['email']; ?></td>
    <td><?php echo $row['purchased']; ?></td>
    <td><?php echo $row['remaining']; ?></td>
    </tr>

    <?php   
}

?>

Answer 1

Try changing the likes of...

count(select * from bookings where b.id_customer = c.id)

...to...

(select count(*) from bookings where b.id_customer = c.id)