Here is a quick snippet to get all user meta data by user_id in WordPress. The following code will print all user meta data for particular user.
$all_meta_for_user = get_user_meta( $user_id ); print_r( $all_meta_for_user );
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For example I have made an option to add a custom meta data for every registering users having meta key as
Sorry! i didn’t understand. Please explain more 🙂