Ausgabe der neuesten Themen zu einer Kategorie

function getPostFromCat($field = 'post_title', $category_id = 1, $crop = 250) {
    global $post;
    
    // keep global variable, retrieve posts from database
    $post_old = $post;
    $posts = get_posts('category=' . $category_id . '&numberposts=1&offset=0');
    
    foreach ((array) $posts as $post) {
        switch ($field) {
            default:
                $content = cropString($post->$field, $crop);
                break;
                
            case 'the_cateory':
                $content = the_cateory();
                break;
                
            case 'the_author':
                $content = the_author();
                break;
                
            case 'the_author_posts_link':
                $content = the_author_posts_link();
                break;
                
            case 'the_time':
                $content = the_time('d.m.y');
                break;
                
            case 'thumbnail':
                $content = the_post_thumbnail();
                break;
                
            case 'get_permalink':
                $content = get_permalink();
                break;
        }
    }


    echo $content;
    
    // restore the global post
    $post = $post_old;
}

<div class="teaser">
                <div class="teaserhead">
                    <h2><?php getPostFromCat('the_category', 1); ?></h2>
                    <a href="#">Weitere Themen &raquo;</a> 
                </div>
                <?php getPostFromCat('thumbnail', 1); ?>
                <h1><?php getPostFromCat('post_title', 1); ?></h1>
                <p class="autor klein">Von <?php getPostFromCat('the_author_posts_link', 1); ?> – <?php getPostFromCat('the_time', 1); ?></p>
                <p class="teasertext"><?php getPostFromCat('post_content', 1); ?></p>
                <p class="weiterlesen-button"><a href="<?php getPostFromCat('get_permalink', 1); ?>">Weiterlesen ...</a></p>
            </div>

function getPostFromCat($field = 'post_title', $category_id = 1, $crop = 250) {
    global $post;
    global $id;
    global $authordata;
    $post_old = $post;
    $id_old = $id;
    $authordata_old = $authordata;
    
    $posts = get_posts('category=' . intval($category_id) . '&numberposts=1&offset=0');
    
    foreach ((array) $posts as $post) {
        $id = $post->ID;
        $authordata = get_userdata($post->post_author);
        
        switch ($field) {
            default:
                $content = cropString($post->$field, $crop);
                break;
                
            case 'the_category':
                $cat = get_the_category();
                $content = $cat[0]->name;
                break;
                
            case 'the_author':
                $content = get_the_author();
                break;
                
            case 'the_author_posts_link':
                $content = the_author_posts_link();
                break;
                
            case 'the_time':
                $content = get_the_time('d.m.y');
                break;
                
            case 'thumbnail':
                $content = the_post_thumbnail();
                break;
                
            case 'get_permalink':
                $content = get_permalink();
                break;
        }
    }


    echo $content;
    
    $post = $post_old;
    $id = $id_old;
    $authordata = $authordata_old;
}