Question

How can I sort in PHP a SQL query grouping by date…

I have this table

id  date                  Title
1   2012-12-19 11:00:00   Value 10
2   2013-01-04 09:00:00   Value 15
3   2013-01-04 20:00:00   Value 18
4   2013-01-04 21:00:00   Value 5
5   2013-01-07 09:00:00   Value 8
6   2013-01-07 09:40:00   Value 11
7   2013-01-07 11:00:00   Value 12

And I would like to sort by month like so

December 19
11:00:00      Value 10

January 04
09:00:00      Value 15
20:00:00      Value 18
21:00:00      Value 5

January 07
09:00:00      Value 8
09:40:00      Value 11
11:00:00      Value 12

Answer 1

Try below query and use PHP loop to get your desired result. You just need to split id, time and title values inside your PHP loop to format data for display.

SELECT
GROUP_CONCAT(id) AS id,
DATE_FORMAT(date,'%M %e') AS Date,
GROUP_CONCAT(DATE_FORMAT(date,'%H:%i:%s')) AS TimeValue,
GROUP_CONCAT(title) AS Title
FROM abc
GROUP BY DATE(date)
ORDER BY MONTH(date) DESC

OUTOUT

ID          DATE            TIMEVALUE                       TITLE
1           December 19     11:00:00                        Value 10
2,3,4       January 4       09:00:00,20:00:00,21:00:00      Value 15,Value 18,Value 5
5,6,7       January 7       09:00:00,09:40:00,11:00:00      Value 8,Value 11,Value 12

SQL fiddle: http://sqlfiddle.com/#!2/ec3a8/6

UPDATE:

OUTPUT

ID          DATE                TIMEVALUE
1           December 19         11:00:00___Value 10
2,3,4       January 4           09:00:00___Value 15,20:00:00___Value 18,21:00:00___Value 5
5,6,7       January 7           09:00:00___Value 8,09:40:00___Value 11,11:00:00___Value 12

PHP CODE: I’m assuming you have array like below on the basis of above query output.

<?php
$data = array(
        0=>array(
            'id'=>1,
            'date'=>'December 19',
            'time_value'=>'11:00:00___Value 10',
        ),
        1=>array(
            'id'=>2,3,4,
            'date'=>'January 4',
            'time_value'=>'09:00:00___Value 15,20:00:00___Value 18,21:00:00___Value 5',
        ),
        2=>array(
            'id'=>5,6,7,
            'date'=>'January 7',
            'time_value'=>'09:00:00___Value 8,09:40:00___Value 11,11:00:00___Value 12',
        )    
    );
if(is_array($data))
{
    foreach($data as $value)
    {
        if(is_array($value))
        {
            echo '<br />'.$value['date'].'<br />';
            $arrTime = explode(',', $value['time_title']);
            if($arrTime)
            {
                foreach($arrTime as $time)
                {
                    $arrTimeTitle = explode('_', $time);
                    echo $arrTimeTitle[0]."&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;".$arrTimeTitle[1]."<br />";
                }
            }
        }
    }
}
?>

Final PHP output:

December 19
11:00:00     Value 10

January 4
09:00:00     Value 15
20:00:00     Value 18
21:00:00     Value 5

January 7
09:00:00     Value 8
09:40:00     Value 11
11:00:00     Value 12