Display Popular Tags in WordPress

<?php
function cxc_tag_cloud() { 
	$tags = get_tags();
   if( $tags ){
        foreach ( $tags as $tag ) {
            $tag_link = get_tag_link( $tag->term_id );
            $tag->link = $tag_link;
        }    
   }
	$args = array(
		'smallest'                  => 10, 
		'largest'                   => 22,
		'unit'                      => 'px', 
		'number'                    => 10,  
		'format'                    => 'flat',
		'separator'                 => " ",
		'orderby'                   => 'count', 
		'order'                     => 'DESC',
		'show_count'                => 1,
		'echo'                      => false
	); 

	$tag_string = wp_generate_tag_cloud( $tags, $args );

	return $tag_string; 

} 
// Add a shortcode so that we can use it in widgets, posts, and pages
add_shortcode( 'cxc_popular_tags', 'cxc_tag_cloud' ); 

// Enable shortcode execution in text widget
add_filter( 'widget_text', 'do_shortcode' );
?>