Btukfyl

I've this array set to a WordPress user on my WordPress page:

Array

(

    [0] => Array

        (

            [0] => 1509

            [1] => 1597

        )



)

To receive this array I'm doing this:

$get_ids = get_user_meta( 3, 'additional_ids', false );

So good, so far! Now I've a little problem because for example I need to remove the value 1509 from the user_meta. So I thirst tried to find out the key by the value which works good for the moment:

$key = array_search( (int) $value, $get_ids[0], true );

So I've found out now that the key is [0]. But how can I delete this now a smart way from the user meta and save it that my meta data array looks like this after saving it:

Array

(

    [0] => Array

        (

            [0] => 1597

        )



)

This is what I've tried:

//Unset element to delete from the array

unset( $get_ids[0][ $key ] );





//Save it again in the database

update_user_meta( 3, 'additional_ids', $get_ids, false );

But when I do this the array is totally messed up and not longer readable.

The first thing we need to address is how you added the meta to your user. If you use add_user_meta, you can add multiple meta values under the same meta key. Like this:

//add_user_meta( $user_id, $meta_key, $meta_value, $unique );

add_user_meta(3, 'additional_ids', 1597, false);

add_user_meta(3, 'additional_ids', 1509, false);

Doing this will add both 1509 and 1597 to the user meta additional_ids.

If you've added the meta fields this way, it will allow you to get all values by using get_user_meta like this:

$additional_ids = get_user_meta(3, 'additional_ids', false);

Which will return an array like this:

Array (

    [0] => 1597

    [1] => 1509

)

You can however delete any value from the array without grabbing the array first by using delete_user_meta(); to remove that specific value.

Like this:

delete_user_meta( 3, 'additional_ids', 1509 );

Which would mean that if you get the additional ids again, it would look like this:

$additional_ids = get_user_meta(3, 'additional_ids', false);

print_r($additional_ids);

//prints out:

Array (

    [0] => 1597

)

The third argument inside that function will ensure that only metadata with that specific value will be removed.

Doing it this way removes the need to try and find the key associated to the value you want to delete, and will also ensure that you don't accidentally mess with any of the other values that may or may not be in that array.

after you do the unset() you will just need to update $get_ids[0] with array_values() to rebase the array again

//Unset element to delete from the array

unset( $get_ids[0][ $key ] );



// rebase the array

$get_ids[0] = array_values( $get_ids[0] );



//Save it again in the database

update_user_meta( 3, 'additional_ids', $get_ids, false );