MySql PHP results - php

Question

Hi i'm working on some code with mysql and need to display the mysql results with php..
MySQL
select distinct(year(Cataloged_Date)) from records;
+------------------------+
| (year(Cataloged_Date)) |
+------------------------+
| 2009 |
+------------------------+
1 row in set (0.00 sec)
PHP
foreach($query->result() as $show){
$data[$i] = $show->Cataloged_Date;
$i++;
}
I'm using codeigniter for the php. Using $show->Cataloged_Date will not return anyting. I'm thinking its $show-> something to display the results...Just cant get it right now...

Answer 1

You need to provide a explicit name or alias for your field in the mysql query - when you apply functions to a column then it's non-obvious what the column name will be.

Answer 2

Try this:
//on MySQL
select distinct(year(Cataloged_Date)) as "Cat_Date" from records;
<?php
foreach($query->result() as $show){
$data[$i] = $show->Cat_Date;
$i++;
}
?>
You can apply an alias to any "value" on your select, be it a column name or the result of a function.
Just do
SELECT something AS YourAlias ...
To give you a clear example:
mysql> select 1;
+---+
| 1 |
+---+
| 1 |
+---+
1 row in set (0.00 sec)
#A simple value can be given an alias
mysql> select 1 as "Number";
+--------+
| Number |
+--------+
| 1 |
+--------+
1 row in set (0.00 sec)
mysql> select max(val) from my_values;
+----------+
| max(val) |
+----------+
| 4 |
+----------+
1 row in set (0.00 sec)
#A function
mysql> select max(val) as "max_val" from my_values;
+---------+
| max_val |
+---------+
| 4 |
+---------+
1 row in set (0.00 sec)
#or even a plain column
mysql> select val as "lav" from my_values;
+------+
| lav |
+------+
| 1 |
| 2 |
| 3 |
| 4 |
+------+
4 rows in set (0.00 sec)

Answer 3

Yes this is normally true but i'm using Codeigniter php framework. I did get it working with
$query->first_row() as $show
Then just echo $show and the results will display without you needing to know the rows name..