Question

This may be a stupid question, so please go easy on me if so.

I have a range of queries (MySQL) returning multidimensional arrays.

I then use these array items to populate variables in a string in a foreach loop.

I then need this string to populate a javascript graph so the format of the data wants to be perfect. this idea works with 1 multidimensional array.

However. To do multiple graphs (e.g comparison line graph) I need to express all the data in the same row.

So what I need to be able to do is if possible merge row to row of the array, rather than add it to the end.

Ill show you my working:

foreach ($graph_month as $month) :
        $first .= ' { year: "'.$month['month'].'",';
        endforeach;

        foreach ($graph_data1 as $data) :
        $second1 .= ' "'.$data['title'].'": '.$data['totalValue'].' ';
        endforeach;

        foreach ($graph_data2 as $data) :
        $second2 .= ' "'.$data['title'].'": '.$data['totalValue'].' ';
        endforeach;

        foreach ($graph_data3 as $data) :
        $second3 .= ' "'.$data['title'].'": '.$data['totalValue'].' ';
        endforeach;

        foreach ($graph_data4 as $data) :
        $second4 .= ' "'.$data['title'].'": '.$data['totalValue'].' ';
        endforeach;

        foreach ($graph_data5 as $data) :
        $second5 .= ' "'.$data['title'].'": '.$data['totalValue'].' ';
        endforeach;

So each of the foreach’s is populating a little section of the javascript required, however I need to be able to concatenate all these rows on the right of each other.

e.g

a foreach that can produce:

$first.$second1.$second2.$second3.$second4.$second5

Is this possible, would it be possible to add [i] and [i++] to each variable.

Answer 1

To start with, you could eliminate the extra foreach lines by generating variables like this:

foreach ($graph_month as $month):

    for ($i = 1; $i <=5; $i++) {
        //$graph_data$i becomes $graph_data1, then $graph_data2 etc.
        foreach ($graph_data$i as $data) :
            $variable .= ' "'.$data['title'].'": '.$data['totalValue'].' ';
        endforeach;
    }

// and so on
endforeach;

The outcome of this script is, as you requested, something of this shape:

{year: month, title: value title: value

We can tweak it a little like this:

foreach ($graph_month as $month):

    $variable .= ' { year: "'.$month['month'].'",';

    for ($i = 1; $i <=5; $i++) {
        //$graph_data$i becomes $graph_data1, then $graph_data2 etc.
        foreach ($graph_data$i as $data) :
            $variable .= ' "'.$data['title'].'": '.$data['totalValue'].' ';
            if ($i != 5) {
                $variable .= ", ";
            }
        endforeach;
    }

    $variable .= 

// and so on
endforeach;

and it becomes:

{ year: month, 'title': 'value', 'title': 'value', ... }