Check If Post Type Supports Archives

Checks if a post type supports archives and returns boolean. Handy if you are playing with custom post types and page templates.

	<?php
	/**
	* Check if post type supports an archive
	*
	* @param string $post_type post type name
	* @uses get_post_type
	* @global object $post
	* @returns boolean
	* @author Joshua David Nelson
	*/
	if( !function_exists( 'cpt_has_archive' ) ) {
	function cpt_has_archive( $post_type ) {
	if( !is_string( $post_type ) \|\| !isset( $post_type ) )
	return false;

	// find custom post types with archvies
	$args = array(
	'has_archive' => true,
	'_builtin' => false,
	);
	$output = 'names';
	$archived_custom_post_types = get_post_types( $args, $output );

	// if there are no custom post types, then the current post can't be one
	if( empty( $archived_custom_post_types ) )
	return false;

	// check if post type is a supports archives
	if ( in_array( $post_type, $archived_custom_post_types ) ) {
	return true;
	} else {
	return false;
	}

	// if all else fails, return false
	return false;

	}
	}