figure-shortcode.php

/**
	 * Shortcode that outputs a figure in the WordPress content editor generated content
	 * @author Keir Whitaker (hello@keirwhitaker.com | keirwhitaker.com)
	 *
	 * @param type $atts The src attribute
	 * @param type $content The caption for the figcaption
	 * @return string
	 *
	 * Usage [figure src="/wp-content/test.jpg"]This is not linked up but this is <a href="http://yahoo.com">This is the content</a>[/figure]
	 * 
	 */
	function figure_func( $atts, $content ) {

	    $a = shortcode_atts( array (
	        		'src' 		=> ''
	    		), $atts );

	    $content = wp_kses( $content, array (
			    'strong' => array(),
			    'a' => array( 'href', 'title' ),
			    'em' =>array()
			) );

	    $retval .= '<figure>';
	    $retval .= '<img src="' . $a['src'] . '" />';
		$retval .= '<figcaption>' . html_entity_decode( $content ) . '</figcaption>';
	    $retval .= '</figure>';

	    return $retval;
	}
	
	add_shortcode( 'figure', 'figure_func' );