Utility Schema Markup for WordPress

 Functions.php

// Add custom meta boxes for Rating value and Total Ratings

function add_custom_meta_boxes() {

    add_meta_box(

        'rating_value_meta_box',

        'Rating Value',

        'rating_value_meta_box_callback',

        'post',

        'side', // Change 'normal' to 'side' to display on the right side

        'high'

    );

    add_meta_box(

        'total_ratings_meta_box',

        'Total Ratings',

        'total_ratings_meta_box_callback',

        'post',

        'side', // Change 'normal' to 'side' to display on the right side

        'high'

    );

}

add_action('add_meta_boxes', 'add_custom_meta_boxes');

// Callback function to display Rating Value meta box

function rating_value_meta_box_callback($post) {

    $rating_value = get_post_meta($post->ID, 'rating_value', true);

    echo '<label for="rating_value">Rating Value:</label>';

    echo '<input type="text" id="rating_value" name="rating_value" value="' . esc_attr($rating_value) . '" size="5" />';

}

// Callback function to display Total Ratings meta box

function total_ratings_meta_box_callback($post) {

    $total_ratings = get_post_meta($post->ID, 'total_ratings', true);

    echo '<label for="total_ratings">Total Ratings:</label>';

    echo '<input type="text" id="total_ratings" name="total_ratings" value="' . esc_attr($total_ratings) . '" size="5" />';

}

// Save custom meta data

function save_custom_meta_data($post_id) {

    if (array_key_exists('rating_value', $_POST)) {

        update_post_meta(

            $post_id,

            'rating_value',

            sanitize_text_field($_POST['rating_value'])

        );

    }

    if (array_key_exists('total_ratings', $_POST)) {

        update_post_meta(

            $post_id,

            'total_ratings',

            sanitize_text_field($_POST['total_ratings'])

        );

    }

}

add_action('save_post', 'save_custom_meta_data');

Single.php

  <script type="application/ld+json">

  {

    "@context": "http://schema.org",

    "@type": "SoftwareApplication",

    "name": "<?php echo get_the_title(get_the_ID()); ?>",

    "description": "<?php echo get_post_meta(get_the_ID(), 'rank_math_description', true); ?>",

    "operatingSystem": "Web",

    "applicationCategory": "Utility",

    "offers": {

      "@type": "Offer",

      "price": "0",

      "priceCurrency": "USD"

    },

    "aggregateRating": {

      "@type": "AggregateRating",

      "ratingValue": "<?php echo get_post_meta(get_the_ID(), 'rating_value', TRUE); ?>",

      "bestRating": "5",

      "reviewCount": "<?php echo get_post_meta(get_the_ID(), 'total_ratings', TRUE); ?>"

    },

    "author": {

      "@type": "Organization",

      "name": "Mechanical Site"

    },

    "image": "<?php $post_thumbnail_url = get_the_post_thumbnail_url(); echo $post_thumbnail_url; ?>",

    "url": "<?php $post_url = get_permalink(); echo $post_url; ?>",

    "potentialAction": {

      "@type": "EntryPoint",

      "target": {

        "@type": "EntryPoint",

        "urlTemplate": "<?php $post_url = get_permalink(); echo $post_url; ?>"

      },

      "actionPlatform": [

        "http://schema.org/DesktopWebPlatform",

        "http://schema.org/MobileWebPlatform"

      ],

      "inLanguage": "en"

    }

  }

  </script>