Issue with recursive loop and nested multidimensional array

Question

I have here a nested multidimensional array:

The segment loop afterwards.

So...

[1] => Array
[2] => Array
[3] => Array

etc...

I need to find the names of the attributes of each array segment.

So I have used this recursive loop:

private function recursive_array($old_array, $new_array = array()) {

    foreach ($old_array as $key => $value) {

        if (is_array($value) && $key < 1) {
            $new_array = $this->recursive_array($value, $new_array);

        } else {
            if ($key < 1) {
                $new_array[] = $key;

            }
        }
    }
    return $new_array;
}

This is the output:

array
  0 => string 'id' (length=2)
  1 => string 'name' (length=4)
  2 => string 'id' (length=2)
  3 => string 'pre_order' (length=9)
  4 => string 'web_offer' (length=9)
  5 => string 'in_stock' (length=8)
  6 => string 'stock_quantity' (length=14)
  7 => string 'pId' (length=3)
  8 => string 'isbn' (length=4)
  9 => string 'name' (length=4)
  10 => string 'desc' (length=4)
  11 => string 'awTrack' (length=7)
  12 => string 'awThumb' (length=7)
  13 => string 'awImage' (length=7)
  14 => string 'mLink' (length=5)
  15 => string 'mImage' (length=6)
  16 => string 'curr' (length=4)
  17 => string 'buynow' (length=6)
  18 => string 'store' (length=5)
  19 => string 'rrp' (length=3)
  20 => string 'delivery' (length=8)
  21 => string 'awCatId' (length=7)
  22 => string 'awCat' (length=5)
  23 => string 'mCat' (length=4)
  24 => string 'brand' (length=5)
  25 => string 'valFrom' (length=7)
  26 => string 'valTo' (length=5)
  27 => string 'comAmount' (length=9

What it is also picking up is the top nested array:

[XML_Serializer_Tag] => Array
            (
                [id] => 736
                [name] => Cadbury Gifts Direct
            )

This is just details for the entire feed not the individual segments.

I need a way of filtering out the top nested array but bear in mind that the details are dynamic so the name of the keys can change from one feed to the next

goat · Accepted Answer · 2012-05-11 18:39:38Z

2

Maybe this?

$riter = new RecursiveIteratorIterator(New RecursiveArrayIterator($array));
foreach ($riter as $key => $val) {
    if ($riter->getDepth() > 1) {
        echo "$key => $val\n";
    }
}

by default, RecursiveIteratorIterator only visits leaf nodes(the deepest levels down every path). getDepth() can be used to make sure were a minimum depth. I'm not sure if 1 is the correct number, but anyway...

answered May 11, 2012 at 18:39

goat

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1 Comment

AndyW Over a year ago

Yes, if I set it to level two is does work on all the different types of arrays. I need to re-write my function above now because by using this method it removes the key which I was using to count (this outputs a long list of strings)

Julien · Accepted Answer · 2012-05-11 18:42:10Z

0

use array_shift to pop off the first element of the array

answered May 11, 2012 at 18:42

Julien

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