Combining the answer here by @cjcj with the code in this answer, the code that works for me outside the loop, in functions.php is: // Add ability to check for custom post type outside the loop. function is_post_type($type){ global $wp_query; if($type == get_post_type($wp_query->post->ID)) return true; return false; } // Add class to every image in … Read more
I asked a similar but broader question, and I still need to research and write a complete answer. In the meantime here are some pointers that might help you: I wrote a set of plugins that resizes all images to the size used in the editor. It works by converting <img src=”https://wordpress.stackexchange.com/questions/4984/image.jpg” width=”200″ height=”400″/> to … Read more
The filters you are trying to use run on image insertion, so it is not possible to swap all the images already present in your posts using these filters. It should work, however, if you intend to change to img tags from now on. The filter the_content, however, is applied to the post after it … Read more
I decided to approach it differently. Instead of hooking into ‘wp_handle_upload_prefilter’ and tampering with the $file variable I decided to do the resize after the file is uploaded and after I get the attachment id like this: public function resize_attachment($attachment_id, $width, $height) { // Get file path $file = get_attached_file($attachment_id); // Get editor, resize and … Read more
You can try the image_send_to_editor filter: /** * Wrap the inserted image html with <figure> * if the theme supports html5 and the current image has no caption: */ add_filter( ‘image_send_to_editor’, function( $html, $id, $caption, $title, $align, $url, $size, $alt ) { if( current_theme_supports( ‘html5’ ) && ! $caption ) $html = sprintf( ‘<figure>%s</figure>’, $html … Read more
There’s a handy built-in function, namely wp_count_attachments(). We can filter out images with wp_count_attachments( $mime_type=”image” ) that returns an object like: stdClass Object ( [image/gif] => 9 [image/jpeg] => 121 [image/png] => 20 [image/x-icon] => 6 [trash] => 0 ) So we can use the one-liner: $count = array_sum( (array) wp_count_attachments( $mime_type=”image” ) ); for … Read more
Okay, the problem was in my interpretation of the filter. I was under the impression that this filter could be used for all images in a post, as they’re all considered attachments in the db (post type – attachment), but it’s actually reserved for the Featured Image/Post Thumbnail. Nowhere in the examples I looked through … Read more
I use the Auto Post Thumbnail plugin for doing just that on this site and it works fine. First image in a post becomes the featured image every time.
I know this is old, but I just came across it shortly before I came across the solution. To display the author image inside the loop, just use this code: <?php echo get_avatar( get_the_author_meta( ‘ID’ ) , 32 ); ?> Where ’32’ is the size of the image. If it’s outside the loop, then just … Read more
You have a few different solutions available here: Automatically scaling down If you just do not want to store huge amounts of image data on your webspace, I’d recommend the Plugin Imsanity. This automatically scales down the uploaded images, even if they are too big. Forbid large uploads In this case the user has more … Read more