Unserialize Custom Field & Save as Multiple Rows in Wordpress Database - mysql

Question

I have a custom field in post_meta table of wordpress database. It's called 'combined'. I want to seperate the values based on key and save them as multiple rows if there are multiple values for the key.
My meta_key:
Result after I run my code:
What I want:
My Code:
add_action( 'init', function() {
if ( 'migrate' !== filter_input( INPUT_GET, 'action' ) ) {
return;
}
$query = new WP_Query( [
'posts_per_page' => -1,
'post_type' => 'post',
'post_status' => 'any',
] );
if ( ! $query->have_posts() ) {
return;
}
while ( $query->have_posts() ) {
$query->the_post();
$data = get_post_meta( get_the_ID(), 'combined', true );
foreach($data as $singleData => $value ){
update_post_meta( get_the_ID(), $singleData, $value );
}
}
} );

Answer 1

I have found the way to get the values as I want them to be in the database. Changing the loop part in the above code with code did the trick.
$data = get_post_meta( get_the_ID(), 'combined', true );
foreach($data as $singleData => $value ){
$thisArray = $data[$singleData];
foreach ($thisArray as $key2 => $value){
add_post_meta( get_the_ID(), $singleData, $thisArray[$key2], $unique = false);
}
}