How to update/delete array in post meta value?

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I using post meta like.. 

$meta = get_post_meta(99,'_mymeta',true);
$value = $meta['somekey'];
echo $value;

But how to update $meta['somekey'] to some another value ?

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How to use update_post_meta to update sub meta key ?(Idk, How ppl call) 

update_post_meta(99, '_mymeta["somekey"]', 'myAnotherValue');

?????

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1 comment

  1. To update post meta that are an array: you have to fetch the original values, change the value you need and update it again. For example 

    $list_of_values = get_post_meta($post_id, '_list_values', true);
if(!empty($list_of_values)) {
    $list_of_values["some_prop"] = "new value";
}
update_post_meta($post_id, '_list_values', $list_of_values);

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