How to reindex an array after extracted from a larger array? [duplicate]

Question

I have this array:

I have this array.

There are many ['variants'] below.

I need to create a new array like this:

new array like this

from all ['variants'].

I have a function with this

$variants = array();
$features = $features['18']; foreach ($features as $feature) {
    if (!empty($feature['variants'])) {
        $variants = array_merge($variants, $feature['variants']);
    }
}
    fn_print_r($variants);
return $variants;

But it have error: array_merge() [function.array-merge]: Argument #2 is not an array.

How can I fix this?

Please include your arrays inside your question. Also where do you have a key 18? And what exactly is in $features before you loop over it? — Rizier123
– Rizier123, Commented Aug 30, 2016 at 1:54
Your foreach loop does not make sense then, since you loop over each value and I don't see why you want to merge variants, since you only have it once in your array. Why not just do $variants = $features["variants"];? — Rizier123
– Rizier123, Commented Aug 30, 2016 at 1:57
If i do like this, i have array with old ["variants"] id. Like 197 - 198 ... ect. I need new with id 0,1,2 ect. — Владимир Михайлов
– Владимир Михайлов, Commented Aug 30, 2016 at 2:10
Then just reindex the array with array_values(), e.g. $variants = array_values($features["variants"]); — Rizier123
– Rizier123, Commented Aug 30, 2016 at 2:11

Maxim Tkach · Accepted Answer · 2016-08-30 08:24:08Z

1

If you code correct - rewrite line 3:

if (!empty($feature['variants'])) {

on:

if (!empty($feature['variants']) && is_array($feature['variants'])) {

And I would give the call to array_values. For example:

foreach($features as $feature)
{
    $result = [];
    if(isset($feature['variants']) && is_array($feature['variants']))
    {
        $result = array_merge($result, array_values($feature['variants']));
    }
}

answered Aug 30, 2016 at 8:24

Maxim Tkach

1,70713 silver badges23 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to reindex an array after extracted from a larger array? [duplicate]

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related