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I am trying to write a function to copy the value of an imported custom field (postalCode) to another custom field (wpcf-adres) when the post is saved or created. But i cannot get it to work, so there must be something not right in the code? Thanks for any advice or solution given!

function sync_postalcode( $post_id ) {
 // GET Postal code FROM OTHER FIELD
     $postcode = get_post_meta( $post_id, 'postalCode', true);
 // UPDATE Postalcode IN adres FIELD
 update_post_meta( $post_id, 'wpcf-adres', $postcode );
 }

add_action( 'save_post', 'sync_postalcode' );

本文标签： save postupdate a custom field with the value of another existing custom field

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