get category links array hierarcal

category_links.php

<?php 
					$args = array(
					        'orderby'   => 'name',
					        'order'     => 'ASC',
					        'hide_empty'    => '0',
					        'hierarchical' => 1,

					  );

					$categories = get_categories($args);
					// var_dump($categories);
					foreach( $categories as $category ) { 
						if($category->parent==0){
							echo "<div id=\"chisiamo\">
							<h3>".$category->cat_name."</h3>";
							echo "<ul>";
							foreach ($categories as $cat) {
								if($cat->parent==$category->term_id){
									echo "<li><a href=\"".get_category_link($cat->term_id)."\">".$cat->name."</a></li>";
								}
							}
							echo "</ul>";
							echo "</div>";
						}

					}