Convert timestamp to date in MySQL query

DATE_FORMAT(FROM_UNIXTIME(`user.registration`), '%e %b %Y') AS 'date_formatted'

To just get a date you can cast it

cast(user.registration as date)

and to get a specific format use date_format

date_format(registration, '%Y-%m-%d')

SQLFiddle demo

Convert timestamp to date in MYSQL

Make the table with an integer timestamp:

mysql> create table foo(id INT, mytimestamp INT(11));
Query OK, 0 rows affected (0.02 sec)

Insert some values

mysql> insert into foo values(1, 1381262848);
Query OK, 1 row affected (0.01 sec)

Take a look

mysql> select * from foo;
+------+-------------+
| id   | mytimestamp |
+------+-------------+
|    1 |  1381262848 |
+------+-------------+
1 row in set (0.00 sec)

Convert the number to a timestamp:

mysql> select id, from_unixtime(mytimestamp) from foo;
+------+----------------------------+
| id   | from_unixtime(mytimestamp) |
+------+----------------------------+
|    1 | 2013-10-08 16:07:28        |
+------+----------------------------+
1 row in set (0.00 sec)

Convert it into a readable format:

mysql> select id, from_unixtime(mytimestamp, '%Y %D %M %H:%i:%s') from foo;
+------+-------------------------------------------------+
| id   | from_unixtime(mytimestamp, '%Y %D %M %H:%i:%s') |
+------+-------------------------------------------------+
|    1 | 2013 8th October 04:07:28                       |
+------+-------------------------------------------------+
1 row in set (0.00 sec)

If the registration field is indeed of type TIMESTAMP you should be able to just do:

$sql = "SELECT user.email, 
           info.name, 
           DATE(user.registration), 
           info.news
      FROM user, 
           info 
     WHERE user.id = info.id ";

and the registration should be showing as yyyy-mm-dd