Podcast Count Shortcode

count-podcasts.php

<?php
/**
 * Plugin Name: Podcast Shortcode
 * Description: Adds a shortcode to display your podcast count. <code>[podcast-count]</code>
 * Version: 1.0
 * Author: Daron Spence
 * Author URI: https://daronspence.com/
 *
 * A simple shortcode to display the number of published podcasts on your site. Uses the `podcast` post type.
 *
 * Use the minus/plus attributes to change the specified number from the final total. 
 * Useful if you want to build a little suspense and create something like: "We have 100+ podcasts!"
 * (when in reality you have 101 podcasts)
 * 
 * [podcast-count minus="1"] or [podcast-count plus="3"] or [podcast-count minus="2" plus="2"]
 *
 * Requires PHP 5.3+ for anonymous functions. Rewrite it if you want. You have been warned!
 */

add_action('init', function(){
  
  add_shortcode('podcast-count', function( $atts ){

    $attributes = shortcode_atts( array(
          'minus' => 'false',
          'plus' => 'false'
      ), $atts );

    // Store the query result. Change the post type slug if yours is different.
    $count = wp_count_posts( 'podcast' );

    // get published podcasts
    $podcasts = isset( $count->publish ) ? $count->publish : 0;
    
    // Subtract if necessary
    if ( $attributes['minus'] !== "false" ){
      $podcasts = $podcasts - intval($attributes['minus']);
    }
    
    // Add if necessary
    if ( $attributes['plus'] !== "false" ){
      $podcasts = $podcasts + intval($attributes['plus']);
    }

    return intval($podcasts);

  });

});