source: trunk/xpressme_integration_kit/wp-content/themes/xpress_default/blocks/authors_block_theme.php

<?php
// Block Version: 1.0
function authors_block($options)
{
        $mydirname = empty( $options[0] ) ? 'xpress' : $options[0] ;
        $this_template = empty( $options[1] ) ? 'db:'.$mydirname.'_block_authors.html' : trim( $options[1] );
        $optioncount = empty( $options[2] ) ? 0 : 1 ;
        $exclude_admin = empty( $options[3] ) ? 0 : 1 ;
        $show_fullname = empty( $options[4] ) ? 0 : 1 ;
        $hide_empty = empty( $options[5] ) ? 0 : 1 ;            
        $mydirpath = get_xpress_dir_path();
        
        if(xpress_is_wp_version('<','2.3') ){
                $param_str = 'optioncount='. $optioncount . '&exclude_admin=' . $exclude_admin .'&show_fullname='. $show_fullname . '&hide_empty=' . $hide_empty;
                ob_start();
                        wp_list_authors($param_str); //WP2011 wp_list_authors() used only parse_str()
                        $list_authors = ob_get_contents() ;
                ob_end_clean();
        } else {
                $param = array(
                        'optioncount' => $optioncount, 
                        'exclude_admin' => $exclude_admin, 
                        'show_fullname' => $show_fullname, 
                        'hide_empty' => $hide_empty,
                        'feed' => '',
                        'feed_image' => '',
                        'echo' => false
                );
                $list_authors = wp_list_authors($param);
        }
        if (xpress_is_multi_user()){
                $all_link = '<li>' . '<a href="' . get_bloginfo('url'). '" title="' . __('All Authors','xpress') . '">' .__('All Authors','xpress') . '</a></li>';
        } else {
                $all_link = ''; 
        }
        $output = "<ul>\n" . $all_link . $list_authors . "\n</ul>\n";
        
        $block['authors'] = $output;
        
        return $block ;
}
?>