Question

Here is my array that is put together:

Array
(
[1] => Array
    (
        [0] => Array
            (
                [date] => 1335848400000
                [value] => 1
                [product_id] => 1
                [title] => Test Product
            )

        [1] => Array
            (
                [date] => 1338526800000
                [value] => 8
                [product_id] => 1
                [title] => Test Product
            )

    )

[2] => Array
    (
        [0] => Array
            (
                [date] => 1335848400000
                [value] => 1
                [product_id] => 2
                [title] => Test Product 2
            )

        [1] => Array
            (
                [date] => 1338526800000
                [value] => 4
                [product_id] => 2
                [title] => Test Product 2
            )

    )

[3] => Array
    (
        [0] => Array
            (
                [date] => 1338526800000
                [value] => 6
                [product_id] => 3
                [title] => Test Product 3
            )

    )

)

What I would like it to display as:

{
name: 'Test Product',
data: [[1335848400000, 1],[1338526800000, 8]]
},
{
name: 'Test Product 2',
data: [[1335848400000, 1], [1338526800000, 4]]
},
{
name: 'Test Product 3',
data: [[1338526800000, 6]]
},

I need to group by dates and values together as such for highcharts.

How would I go about doing that? I have no idea where to even start. I have done research into it but couldn’t find a good example.

EDIT:

Working code except with one error:

for($i=0 ; $i<=count($array) ; $i++)
                    {
                    $result_array[$i]['name'] = $array[$i][0]['title'];
                        for($j=0 ; $j<count($array[$i]) ; $j++)
                        {
                            $result_array[$i]['data'][$j][0] = $array[$i][$j]['date'];
                            $result_array[$i]['data'][$j][1] = $array[$i][$j]['value'];
                        }
                    }

                    echo $result = json_encode($result_array);

error:

Severity: Notice

Message: Undefined offset: 0

Filename: name.php

Line Number: 115

[{"name":null},{"name":"Test Product","data":[[1335848400000,"1"],[1338526800000,"8"]]},{"name":"Test Product 2","data":[[1335848400000,"1"],[1338526800000,"4"]]},{"name":"Test Product 3","data":[[1338526800000,"6"]]}] 

Answer 1

You can use this loop

<?php

for($i=1 ; $i<=count($main_array) ; $i++)
{
   $result_array[$i]['name'] = $main_array[$i][0]['title'];
   for($j=1 ; $j<=count($main_array[$i]) ; $j++)
   {
       $result_array[$i]['data'][$j][0] = $main_array[$i][$j]['date'];
       $result_array[$i]['data'][$j][1] = $main_array[$i][$j]['value'];
   }
}


echo $result = json_encode($result_array);

?>

I have tested it… It works compaletely as you want