Cacher is the code snippet organizer for pro developers

<?php

//Product Cat creation page
function text_domain_taxonomy_add_new_meta_field() {
    ?>
    <div class="form-field">
        <label for="term_meta[wh_meta_title]"><?php _e('Meta Title', 'text_domain'); ?></label>
        <input type="text" name="term_meta[wh_meta_title]" id="term_meta[wh_meta_title]">
        <p class="description"><?php _e('Enter a meta title, <= 60 character', 'text_domain'); ?></p>
    </div>
    <div class="form-field">
        <label for="term_meta[wh_meta_desc]"><?php _e('Meta Description', 'text_domain'); ?></label>
        <textarea name="term_meta[wh_meta_desc]" id="term_meta[wh_meta_desc]"></textarea>
        <p class="description"><?php _e('Enter a meta description, <= 160 character', 'text_domain'); ?></p>
    </div>
    <?php
}

add_action('product_cat_add_form_fields', 'text_domain_taxonomy_add_new_meta_field', 10, 2);

//Product Cat Edit page
function text_domain_taxonomy_edit_meta_field($term) {

    //getting term ID
    $term_id = $term->term_id;

    // retrieve the existing value(s) for this meta field. This returns an array
    $term_meta = get_option("taxonomy_" . $term_id);
    ?>
    <tr class="form-field">
        <th scope="row" valign="top"><label for="term_meta[wh_meta_title]"><?php _e('Meta Title', 'text_domain'); ?></label></th>
        <td>
            <input type="text" name="term_meta[wh_meta_title]" id="term_meta[wh_meta_title]" value="<?php echo esc_attr($term_meta['wh_meta_title']) ? esc_attr($term_meta['wh_meta_title']) : ''; ?>">
            <p class="description"><?php _e('Enter a meta title, <= 60 character', 'text_domain'); ?></p>
        </td>
    </tr>
    <tr class="form-field">
        <th scope="row" valign="top"><label for="term_meta[wh_meta_desc]"><?php _e('Meta Description', 'text_domain'); ?></label></th>
        <td>
            <textarea name="term_meta[wh_meta_desc]" id="term_meta[wh_meta_desc]"><?php echo esc_attr($term_meta['wh_meta_desc']) ? esc_attr($term_meta['wh_meta_title']) : ''; ?></textarea>
            <p class="description"><?php _e('Enter a meta description', 'text_domain'); ?></p>
        </td>
    </tr>
    <?php
}

add_action('product_cat_edit_form_fields', 'text_domain_taxonomy_edit_meta_field', 10, 2);

// Save extra taxonomy fields callback function.
function save_taxonomy_custom_meta($term_id) {
    if (isset($_POST['term_meta'])) {
        $term_meta = get_option("taxonomy_" . $term_id);
        $cat_keys = array_keys($_POST['term_meta']);
        foreach ($cat_keys as $key) {
            if (isset($_POST['term_meta'][$key])) {
                $term_meta[$key] = $_POST['term_meta'][$key];
            }
        }
        // Save the option array.
        update_option("taxonomy_" . $term_id, $term_meta);
    }
}

add_action('edited_product_cat', 'save_taxonomy_custom_meta', 10, 2);
add_action('create_product_cat', 'save_taxonomy_custom_meta', 10, 2);




////////////////////////////////////////////////////////////////
///Adding Open Graph Meta Tags To WordPress Head function
////////////////////////////////////////////////////////////////

function doctype_opengraph($output) {
    return $output . '
    xmlns:og="http://opengraphprotocol.org/schema/"
    xmlns:fb="http://www.facebook.com/2008/fbml"';
}

add_filter('language_attributes', 'doctype_opengraph');

function wh_opengraph() {
    global $post;
    //for product cat archive page only
    if (is_product_category()) {
        $term = get_queried_object();
        $metaArray = get_option('taxonomy_' . $term->term_id);
        $productCatMetaTitle = $metaArray['wh_meta_title'];
        $productCatMetaDesc = $metaArray['wh_meta_desc'];
        ?>
        <meta property="og:type" content="object" />
        <meta property="og:title" content="<?php echo $productCatMetaTitle; ?> | <?php echo get_bloginfo(); ?>" />
        <meta property="og:description" content="<?php echo $productCatMetaDesc; ?>" />
        <meta property="og:site_name" content="<?php echo get_bloginfo(); ?>" />
        <meta name="twitter:card" content="summary" />
        <meta name="twitter:description" content="<?php echo $productCatMetaDesc; ?>" />
        <meta name="twitter:title" content="<?php echo $productCatMetaTitle; ?> | <?php echo get_bloginfo(); ?>" />
        
        <!--<meta name="description" content="<?php // echo $productCatMetaDesc; ?>">-->
        <?php
    } else {
        return;
    }
}

add_action('wp_head', 'wh_opengraph', 5);