WordPress: Custom Field Shortcodes

gistfile1.aw

<?php
/*
Plugin Name: Custom Field Shortcodes
Plugin URI: http://trepmal.com/2010/12/including-custom-fields-inside-your-post/
Description: Include a custom field in your post with a shortcode. [cf name=custom_field]
Author: Kailey Lampert
Version: 1.0
Author URI: http://kaileylampert.com/
*/
/*
    Copyright (C) 2011 Kailey Lampert

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
/*
	usage: [cf name='custom_field_key']
*/

new cfsc();
class cfsc {
	function cfsc() {
		add_shortcode( 'cf', array( &$this , 'grab_field' ) );
	}
	function defaults() {
		return array( 'name' => '' );
	}
	function grab_field($atts) {
		extract( shortcode_atts( $this->defaults() , $atts ) );
		if ( ! empty( $name ) ) {
			return get_post_meta( get_the_ID(), $name ,true );
		}
		return '';
	}
}