houzz.php

<?php

wp_oembed_add_provider( 'http://*.houzz.com/*', 'http://www.houzz.com/oembed' );

function do_houzz_shortcode($atts, $content=null) {
	$url = substr( $atts[0], 1 );
	$args = array();
	if ( isset( $atts['w'] ) && is_numeric( $atts['w'] ) ) {
		$args['width'] = $atts['w'];
	}
	if ( isset( $atts['h'] ) && is_numeric( $atts['h'] ) ) {
		$args['height'] = $atts['h'];
	}
	$oembed = _wp_oembed_get_object();
	return $oembed->get_html( $url, $args );
}

add_shortcode('houzz', 'do_houzz_shortcode');