PDO: difference between two dates (php)

Question

I have a table of messages. I am trying to only return rows in which the datetime_read is within the last 3 days. So only messages that have been read within the past 3 days. Here is my query as it stands:

$q = 'SELECT * FROM message ORDER BY datetime_read DESC
            WHERE datetime_read...';

I am totally new to PDO and relatively new to MySQL also. Any help much appreciated. Thanks.

Answer 1

SELECT 
    * 
FROM 
    message
WHERE
    datetime_read >= DATE_ADD(CURDATE(), INTERVAL -3 DAY)
ORDER BY 
    datetime_read DESC;

---

Detail information about date/time in MySQL

• MySQL 5.5 Manual: date/time functions

---

Updated

1. Note: Removed semicolon before ORDER BY (thanks to @Sai-Raja)