Simple, powerful way to strip out any tags you want from the_content() in wordpress, using regex:
Get the_content() in wordpress without image tags:
$content = get_the_content();
$content = preg_replace("/<img[^>]+\>/i", "(image) ", $content);
$content = apply_filters('the_content', $content);
$content = str_replace(']]>', ']]>', $content);
echo $content;
Get the_content() in wordpress without image and video (iframe) tags:
$content = get_the_content();
$content = preg_replace("/<img[^>]+\>/i", "(image) ", $content);
$content = preg_replace("/<iframe[^>]+\>/i", "(video) ", $content);
$content = apply_filters('the_content', $content);
$content = str_replace(']]>', ']]>', $content);
echo $content;
Strip out any html tags from the_content() wordpress:
$content = get_the_content();
$content = preg_replace("/<embed[^>]+\>/i", "(embed) ", $content);
$content = apply_filters('the_content', $content);
$content = str_replace(']]>', ']]>', $content);
echo $content;