PHP array of objects - trying to extract key

Question

I am getting a WooCommerce order product meta_data like this...

$item_meta_data = $item_values->get_meta_data();

This gives me the following...

WC_Meta_Data Object
(
    [current_data:protected] => Array
        (
            [id] => 8795
            [key] => Option 1
            [value] => Yes
        )

    [data:protected] => Array
        (
            [id] => 8795
            [key] => Option 1
            [value] => Yes
        )

)

I am confused about the data that is returned, I want to check if Option 1 is set, I have tried to get the key like this...

foreach($item_meta_data as $meta_data_item) {
    echo $meta_data_item['key'];
}

But this is not working as it is not an array, anyone any ideas?

Have you tried maybe casting it as an array/object first using the (array)$item_meta_dataor (object)$item_meta_data? — cchoe1
– cchoe1, Commented Dec 28, 2017 at 13:53
I had looked at the available methods but hadn't been able to make it do what I wanted. Perhaps it is my lack of understanding of the documenation. Will have a further read — fightstarr20
– fightstarr20, Commented Dec 28, 2017 at 14:01

LugiHaue · Accepted Answer · 2017-12-28 14:35:43Z

5

There is a magic method in WC_Meta_Data class named __get .

So you can access protected properties. For example:

$item_meta_data->key

edited Dec 28, 2017 at 14:35

answered Dec 28, 2017 at 14:06

LugiHaue

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2 Comments

fightstarr20 Over a year ago

That gives me an error... Call to a member function get_data() on array

Zeth Over a year ago

@fightstarr20 Same thing happend to me. It's because you have an array with one element in it. So in that case $item_meta_data[0]->key would work, - but you should probably refactor your code a bit (sinces $item_meta_data is an array of item_meta_data's).

Philipp Maurer · Accepted Answer · 2017-12-28 14:28:27Z

0

You can access all the data with $item_meta_data->get_data() or one specific item with $item_meta_data->id or $item_meta_data->key or $item_meta_data->value.

edited Dec 28, 2017 at 14:28

Philipp Maurer

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answered Dec 28, 2017 at 13:53

Priidik Vaikla

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