Below code can help you:
add_filter('posts_orderby', 'show_featured_products_orderby',10,2);
function show_featured_products_orderby($order_by, $query){
global $wpdb ;
if( ($query->get('post_type')=='product') && (!is_admin()) ){
$orderby_value = ( isset( $_GET['orderby'] ) ? wc_clean( (string) $_GET['orderby'] ) : apply_filters( 'woocommerce_default_catalog_orderby', get_option( 'woocommerce_default_catalog_orderby' ) ) );
$orderby_value_array = explode( '-', $orderby_value );
$orderby = esc_attr( $orderby_value_array[0] );
$order = ( !empty($orderby_value_array[1]) ? $orderby_value_array[1] : 'ASC' );
$feture_product_id = wc_get_featured_product_ids();
if ( is_array( $feture_product_id ) && !empty($feture_product_id) ) {
if ( empty($order_by) ) {
$order_by = "FIELD(" . $wpdb->posts . ".ID,'" . implode( "','", $feture_product_id ) . "') DESC ";
} else {
$order_by = "FIELD(" . $wpdb->posts . ".ID,'" . implode( "','", $feture_product_id ) . "') DESC, " . $order_by;
}
}
}
return $order_by;
}
Add this code to active themes function.php file
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