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kevinwhoffman/acf-update-post-thumbnail.php

Created January 30, 2016 16:40
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Update post thumbnail with value of ACF Image field
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acf-update-post-thumbnail.php
<?php
function acf_update_post_thumbnail( $post_id ) {
$thumbnail_id = get_post_meta( $post_id, 'acf_image_field' );
set_post_thumbnail( $post_id, $thumbnail_id );
}
// run after ACF saves the $_POST['acf'] data
add_action( 'acf/save_post', 'acf_update_post_thumbnail', 20 );
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