If you need to retain only images for last 50 posts, I don’t think that a cron job or a WP cron is the best thing you can do, in WordPress you can know when a post is published, and you can run a routine everytime it happen, deleting images for the post pubblished 50 … Read more
I know its too late for this answer, but can help others, you can use Media Deduper plugin to index and find duplicated image , it is also good enough to link the post to existing image.
Contrary to Pieter, I’d say your if statement is correct (although, unnecessary). If it’s a WordPress theme, then add_theme_support will likely exist! Have you per chance added the images before setting the post thumbnail size? If so, you need to regenerate your images: http://wordpress.org/plugins/regenerate-thumbnails/
I would rather just set the width and let the height be automatically adjusted to the proportion, so I won’t even have to crop the images. If the images are not all the same proportion then some cropping will have to be done. If you want to avoid cropping then you’ll need to make sure … Read more
First, please don’t use query_posts() (emphasis mine)! Note: This function isn’t meant to be used by plugins or themes. As explained later, there are better, more performant options to alter the main query. query_posts() is overly simplistic and problematic way to modify main query of a page by replacing it with new instance of the … Read more
The only way to do it is using a query filter I think function wpse156319_posts_where( $where, $query ) { global $wpdb; $where .= $wpdb->prepare( ‘ AND (‘ . $wpdb->posts . ‘.post_parent = %s OR ‘ . $wpdb->posts . ‘.post_author = %s)’, $_POST[‘id’], get_current_user_id() ); return $where; } which you just add in the ajax_query_attachments_args instead … Read more
640px is the content size set in your functions.php. Here is an example of the content width set in the bundled theme twentyfourteen in twentyfourteen/functions.php#L28 if ( ! isset( $content_width ) ) { $content_width = 474; } In this example, the image size will be 474 px. The content size will be the size used … Read more
Look at this answer by Chip Bennet – Medium / Large images sizes aren’t cropped by default ( and I also just verified on my install ). You can change the cropping of Thumbnails in Settings -> Media. It sounds like what you really need is just a new image size via add_image_size() which is … Read more
Following our exchange in the comments I’ve reread your question and have a pretty straightforward answer: It looks like it’s working fine. You are worried about the sizes attribute in your second example, but it’s the srcset attribute that you should look at and it is showing all of your image sizes: <img src=”http://xxx.dev/wp-content/uploads/Delft_IMG_6275-e1453192498922.jpg” class=”attachment-full … Read more
I am assuming you want this value on the front-end as opposed to needing it in the block editor due to the <figure> somehow not displaying correctly when viewed in the block editor. If that is the case then you can use something similar to DOMDocument as per the following example: Assume HTML of: <div> … Read more