How to add more headlines in sidebar

Something like:

<ul>
 <?php
 $side_posts = get_posts('numberposts=7&offset=10');
 foreach($side_posts as $post) :
 setup_postdata($post); ?>
<li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>
 <?php endforeach; ?>
 </ul>
 <?php wp_reset_query();?>

should work.

https://codex.www.ads-software.com/Template_Tags/get_posts

Thanks esmi! It works as i want but i dont know what happens with the thumbnail. It shows different in the sidebar than in the content. This is the code in index:

</p>
		<a href="<?php the_permalink(); ?>"><?php dp_attachment_image($post->ID, 'thumbnail', 'alt="' . $post->post_title . '"'); ?></a>
		<?php the_excerpt(); ?>

And i ve put in the sidebar like:

<?php
 $side_posts = get_posts('numberposts=5&offset=10');
 foreach($side_posts as $post) :
 setup_postdata($post); ?>
<li><p><a href="<?php the_permalink(); ?>"><?php dp_attachment_image($post->ID, 'thumbnail', 'alt="' . $post->post_title . '"'); ?></a>
<a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></p></li>
 <?php endforeach; ?>
 </ul>
 <?php wp_reset_query();?>

But the image post is bigger than in the index…

By the way, this are the lines about thumbnail in functions.php:

# Displays post image attachment (sizes: thumbnail, medium, full)
function dp_attachment_image($postid=0, $size='thumbnail', $attributes='') {
	if ($postid<1) $postid = get_the_ID();
	if ($images = get_children(array(
		'post_parent' => $postid,
		'post_type' => 'attachment',
		'numberposts' => 1,
		'post_mime_type' => 'image',)))
		foreach($images as $image) {
			$attachment=wp_get_attachment_image_src($image->ID, $size);
			?><img src="<?php echo $attachment[0]; ?>" <?php echo $attributes; ?> /><?php
		}
}

Any help with this?

The following CSS is almost certainly reducing the final displayed image size in the content area:

#content .post img {
border:3px solid #EFEFEF;
float:left;
margin:2px 8px 4px 0;
width:94px;
}

Thanks again, esmi, but it doesn’t work… i ve changed the css like this:

#sidebar .post img {
border:3px solid #EFEFEF;
float:left;
margin:2px 8px 4px 0;
width:94px;
}

But nothing happens… the size of the thumbnail is not the same than in #content…

well, i’ll try to ask in the css forum