Create an hierarchical from an array of arrays

Question

I have the following

Array
(
    [1298650982] => Array
        (
            [genre] => Action
            [date] => 90s
            [rate] =>; 4
            [title] => Braveheart
        )

    [1298651271] => Array
        (
            [genre] => Action
            [date] => 90s
            [rate] => 3
            [title] => Top Gun
        )

)

and am trying to build a hierarchical system where it would return something like this

Action
- 90s
- Rate: 4
- Braveheart
- Rate :3
- Top Gun

basically combine the arrays where they have similar values. Thanks, Mike

Blair McMillan · Accepted Answer · 2011-02-25 17:04:37Z

3

Loop through your array and build a new array for your values. Something like:

$result = array();
foreach ($array as $key => $item) {
    $result[$item['genre']][$item['date']][$key] = array(
        'title' => $item['title'],
        'rate' => $item['rate']
    );
}

Would give you:

Array
(
    [Action] => Array
        (
            [90s] => Array
                (
                    [1298650982] => Array
                        (
                            [title] => Braveheart
                            [rate] => 4
                        )

                    [1298651271] => Array
                        (
                            [title] => Top Gun
                            [rate] => 3
                        )

                )

        )

)

A little hard to tell from your question as to whether that was the type of formatting that you wanted. But you should be able to adjust it from here to get it to what you want.

edited Feb 25, 2011 at 17:04

answered Feb 25, 2011 at 16:59

Blair McMillan

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2 Comments

Mike Silvis Over a year ago

that is exactly what I wanted. Thank you very much sir. You helped me out a lot. I couldn't quiet keep the indenting going with the stackoverflow styling tools

Blair McMillan Over a year ago

Not a problem. Try it as a code block. If you edit your question and look at how the first array is indented you should be able to work it out. Use the preview box underneath to see how it'll look as well.

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