<?php

/**
 * A simple shortcode to display the number of published podcasts on your site. Uses the `podcast` post type.
 *
 * Use the minus attribute to subtract 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"]
 *
 * 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',
          'add' => '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['add'] !== "false" ){
      $podcasts = $podcasts + intval($attributes['add']);
    }

    return intval($podcasts);

  });

});