JezK
Edit File: index.php
<?php /* Plugin Name: G Meta Keywords Plugin URI: https://demo.grana.com.tr/web/wordpress/plugin/g-meta-keywords/ Description: G Meta Keywords (GMK) is a simple but useful WordPress add-on that allows you to easily add the keyword insertion field removed from many Search Engine Optimization (SEO) enhancements for WordPress to all your content again. Version: 1.4 Author: Sinan Yorulmaz Author URI: https://sinanyorulmaz.com License: GNU */ require 'gmk_functions.php'; require 'gmk_options.php'; function gmk_head() { $postMetaKeywords = get_post_meta(get_the_ID(), '_gmk', true); $categoryMetaKeywords = get_term_meta(get_query_var('cat'), 'gmk_field', true); if (!empty($postMetaKeywords) && !is_category()) { ?> <meta name="keywords" content="<?= $postMetaKeywords ?>"> <?php } if (!empty($categoryMetaKeywords) && is_category()) { ?> <meta name="keywords" content="<?= $categoryMetaKeywords ?>"> <?php } } add_action('wp_head', 'gmk_head'); ?>