PHP Select from MySQL where date field is 7 days in the future

Question

I have an automatic checker that checks for domains that are going to expire within the next 7 days and it sends and email to the customer.

Im using this SQL Query:

Answer 1

You've probably defined expiry_date as a datetime value, which means your comparisons are incorrect. e.g. you need to use

SELECT ... WHERE date(expiry_date) = date(now() + interval 7 day)

instead (note the wrapping of the +7 day in a date() operation.

e.g.

Given a table with a date and a datetime field:

+------------+---------------------+
| d          | dt                  |
+------------+---------------------+
| 2013-06-28 | 2013-06-28 08:23:03 |
+------------+---------------------+

Notice how the comparison comes out:

mysql> select d=now(), d=date(now()), dt=now(), dt=date(now()), now() from x;
+---------+---------------+----------+----------------+---------------------+
| d=now() | d=date(now()) | dt=now() | dt=date(now()) | now()               |
+---------+---------------+----------+----------------+---------------------+
|       0 |             1 |        0 |              0 | 2013-06-28 08:26:20 |
+---------+---------------+----------+----------------+---------------------+
1 row in set (0.00 sec)

date v.s. datetime = false
date v.s date = true
datetime v.s. datetime = false (hh:mm:ss doesn't match, so not equal)
datetime v.s. date = false (date is expanded out to yyyy-mm-hh 00:00:00 and the hh:mm:ss don't match