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- function get_primary_category_icon($post_id){
- global $wpdb;
- $query = "SELECT * FROM `".$wpdb->prefix."postmeta` WHERE `post_id` = ".$post_id." AND `meta_key` = '_yoast_wpseo_primary_category'";
- $res = $wpdb->get_results($query);
- $cat_id = $res[0]->meta_value;
- return $cat_id;
- }
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