Phoenix Column shortcode

shortcode for creating the row for the columns in Phoenix

// Add Shortcode
function columns_shortcode( $atts , $content = null ) {

	// Attributes
	extract( shortcode_atts(
		array(
			'centered' => 'no',
			'padding' => '0',
			'gutter' => 'yes',
		), $atts )
	);

	// Code
if ($a['centered'] == "yes") {$centered = 'centered';}
if ($a['padding'] == "yes") {$padding = 'padding: ' . $a['padding'] . '; ';}

$style = 'style="' . $padding . '"';

$output = '';
$output .= '<div class="row' . $centered . '" ' . $style . '>';
$output .= do_shortcode($content);
$output .= '</div>';

return $output;
}
add_shortcode( 'columns', 'columns_shortcode' );