< ?php
function dropdown_tag_cloud( $args = '' ) {
	$defaults = array(
		'smallest' =&gt; 8, 'largest' =&gt; 22, 'unit' =&gt; 'pt', 'number' =&gt; 45,
		'format' =&gt; 'flat', 'orderby' =&gt; 'name', 'order' =&gt; 'ASC',
		'exclude' =&gt; '', 'include' =&gt; ''
	);
	$args = wp_parse_args( $args, $defaults );
 
	$tags = get_tags( array_merge($args, array('orderby' =&gt; 'count', 'order' =&gt; 'DESC')) ); // Always query top tags
 
	if ( empty($tags) )
		return;
 
	$return = dropdown_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args
	if ( is_wp_error( $return ) )
		return false;
	else
		echo apply_filters( 'dropdown_tag_cloud', $return, $args );
}
 
function dropdown_generate_tag_cloud( $tags, $args = '' ) {
	global $wp_rewrite;
	$defaults = array(
		'smallest' =&gt; 8, 'largest' =&gt; 22, 'unit' =&gt; 'pt', 'number' =&gt; 45,
		'format' =&gt; 'flat', 'orderby' =&gt; 'name', 'order' =&gt; 'ASC'
	);
	$args = wp_parse_args( $args, $defaults );
	extract($args);
 
	if ( !$tags )
		return;
	$counts = $tag_links = array();
	foreach ( (array) $tags as $tag ) {
		$counts[$tag-&gt;name] = $tag-&gt;count;
		$tag_links[$tag-&gt;name] = get_tag_link( $tag-&gt;term_id );
		if ( is_wp_error( $tag_links[$tag-&gt;name] ) )
			return $tag_links[$tag-&gt;name];
		$tag_ids[$tag-&gt;name] = $tag-&gt;term_id;
	}
 
	$min_count = min($counts);
	$spread = max($counts) - $min_count;
	if ( $spread &lt;= 0 )
		$spread = 1;
	$font_spread = $largest - $smallest;
	if ( $font_spread &lt;= 0 )
		$font_spread = 1;
	$font_step = $font_spread / $spread;
 
	// SQL cannot save you; this is a second (potentially different) sort on a subset of data.
	if ( 'name' == $orderby )
		uksort($counts, 'strnatcasecmp');
	else
		asort($counts);
 
	if ( 'DESC' == $order )
		$counts = array_reverse( $counts, true );
 
	$a = array();
 
	$rel = ( is_object($wp_rewrite) &amp;&amp; $wp_rewrite-&gt;using_permalinks() ) ? ' rel="tag"' : '';
 
	foreach ( $counts as $tag =&gt; $count ) {
		$tag_id = $tag_ids[$tag];
		$tag_link = clean_url($tag_links[$tag]);
		$tag = str_replace(' ', '&nbsp;', wp_specialchars( $tag ));
		$a[] = "\t&lt;option value='$tag_link'&gt;$tag ($count)&lt;/option&gt;";
	}
 
	switch ( $format ) :
	case 'array' :
		$return =& $a;
		break;
	case 'list' :
		$return = "&lt;ul class='wp-tag-cloud'&gt;\n\t&lt;li&gt;";
		$return .= join("&lt;/li&gt;\n\t&lt;li&gt;", $a);
		$return .= "&lt;/li&gt;\n&lt;/ul&gt;\n";
		break;
	default :
		$return = join("\n", $a);
		break;
	endswitch;
 
	return apply_filters( 'dropdown_generate_tag_cloud', $return, $tags, $args );
}
?>

<select name="tag-dropdown" onchange="document.location.href=this.options[this.selectedIndex].value;">
	<option value="#">Liste d'auteurs</option>
	< ?php dropdown_tag_cloud('number=0&order=asc'); ?>
</select>