plugin-starter-template-tags.php

<?php


function have_posttype () {

	global $plugin_starter;

	if ($plugin_starter->posttype) {

		$plugin_starter->posttype = $plugin_starter->posttype ? next($plugin_starter->posttypes) : reset($plugin_starter->posttypes);

		if (! $plugin_starter->posttype) {

			$plugin_starter->posttypes = false;
			wp_reset_postdata();
			return false;

		}

		return true;

	} else {


		$plugin_starter->posttypes = get_posts( array(
			'post_type' => 'posttype',
			'posts_per_page' => -1
		));
		return count($plugin_starter->posttypes) > 0;

	}

	return false;

}