List posts by category

This snippet works within the category.php. It shows the current category title and below a list of the posts included dynamically.

Category A
Post 4 of Subcategory A
Post 3 of Subcategory A
Post 2 of Subcategory A
Post 1 of Subcategory A

Code Snippet:

//Identify current Post-Category-ID ermitteln
foreach((get_the_category()) as $category)
    $postcat= $category->cat_ID;
    $catname =$category->cat_name;
<h2><?php echo $catname; ?></h2>
<?php $categories = get_categories("child_of=$postcat");
    foreach ($categories as $cat)
    { ?>
    <?php query_posts("cat=$cat->cat_ID&posts_per_page=-1"); ?>
    <h3><?php single_cat_title(); ?></h3>
    <?php while (have_posts()) : the_post(); ?>
        <li><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>">
            <?php the_title(); ?></a>
    <?php endwhile; ?>
    <?php } ?>
<?php } ?>

Posted in Posts