thank you for answering!
I found this piece of code for rewriting the content of get_the_content() to a new function, so that I can use a preg_match() to take only the img-tag…
function deretwaswenigercontent($more_link_text = 'mehr »', $stripteaser = 0, $more_file = '') {
$content = get_the_content($more_link_text, $stripteaser, $more_file);
$content = apply_filters('the_content', $content);
$content = str_replace(']]>', ']]>', $content);
return $content;
}
and for the archive.php (or whereever you want to display the_content() without images), you can use this line..
<?php echo preg_replace('/<img[^>]+./','', deretwaswenigercontent()); ?>
Thank you for your advice!
Maiskolben