Post-style permalinks for your custom post types

gistfile1.php

<?php
/**
 * Post-style permalinks for your custom post types
 * e.g. %year%/%monthnum%/%day%/%postname%
 */
function dbx_get_post_types() {
	return array(
		// replace with your custom post types
		'my-custom-post-type'
	);
}

/**
 * Turns any CPT link into the post-style link
 */
function dbx_filter_post_type_link( $link, $post ) {

	if ( in_array( $post->post_type, dbx_get_post_types() ) ) {

		$query = parse_url( $link, PHP_URL_QUERY );
		parse_str( $query, $args );
		// Generating a preview link
		if ( ! empty( $args['post_type'] ) && $args['post_type'] === $post->post_type ) {
			return $link;
		}

		$unixtime = strtotime( $post->post_date );
		$date = explode( " ",date( 'Y m d H i s', $unixtime ) );
		// Sometimes the permalink is passed for preview links
		if ( 'publish' === $post->post_status && $post->post_name ) {
			$post_name = $post->post_name;
		} else {
			$post_name = '%' . $post->post_type . '%';
		}
		$search_replace = array(
			'%year%'       => $date[0],
			'%monthnum%'   => $date[1],
			'%day%'        => $date[2],
			'%postname%'   => $post_name,
			);

		$permalink_struct = '%year%/%monthnum%/%day%/%postname%/';
		$link = home_url( str_replace( array_keys( $search_replace ), array_values( $search_replace ), $permalink_struct ) );
	}

	return $link;
}
add_filter( 'post_type_link', 'dbx_filter_post_type_link', 10, 2 );

/**
 * Set the appropriate rewrite rules
 */
function dbx_post_type_rewrites() {

	$post_types = '';
	foreach( dbx_get_post_types() as $ptype ) {
		$post_types .= '&post_type[]=' . $ptype;
	}
	add_rewrite_rule( '([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/([^/]+)/page/?([0-9]{1,})/?$', 'index.php?year=$matches[1]&monthnum=$matches[2]&day=$matches[3]&name=$matches[4]&paged=$matches[5]' . $post_types, 'top' );
	add_rewrite_rule( '([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/([^/]+)(/[0-9]+)?/?$', 'index.php?year=$matches[1]&monthnum=$matches[2]&day=$matches[3]&name=$matches[4]&page=$matches[5]' . $post_types, 'top' );

	// Rewrite rules we don't want
	add_filter( 'post_rewrite_rules', '__return_empty_array' );
	foreach( dbx_get_post_types() as $post_type ) {
		add_filter( "{$post_type}_rewrite_rules", '__return_empty_array' );
	}

}
add_action( 'init', 'dbx_post_type_rewrites' );