Unfortunately wp_handle_upload_prefilter hook does not recognize an attachment ID yet. It’s too early and runs the pre-sanitized file name (before moving the attachment and storing it as a post) The Logic What you can do is use that hook wp_handle_upload_prefilter but instead, store a transient with a short life that contains the pre-sanitized file name. … Read more
WordPress has a function solely designed for this purpose. the attachment_url_to_postid() allows you to retrieve an attachment’s ID from it’s URL, which then you can use to get the post’s ID later. If you want to do it by writing a MySQL query, i would however prefer to suggest searching the file’s name in meta_value … Read more
I had a client ask for that and it took a little while to get it but its simple: function change_mce_path_options( $init ) { $init[‘relative_urls’] = true; $init[‘document_base_url’] = get_bloginfo(‘url’); return $init; } add_filter(‘tiny_mce_before_init’, ‘change_mce_path_options’);
WordPress’ media handling strikes me as scattered and inconsistent. I say that only to say that I can’t promise this will work in all cases. However, I think I’d use the add_attachment hook from wp_insert_attachment. You will get a post ID, so you will have to … retrieve the image src with wp_get_attachment_imge_src, probably, retrieve … Read more
You can hook into the filter img_caption_shortcode and replace the whole captioned image. Here I’ve copied the caption shortcode function from WP4.5, left the version used if your theme declares HTML5 support as it is (using figcaption) and modified the non-HTML5 version to use h2. function wpse_233354_img_caption_shortcode( $empty, $attr, $content = null ) { // … Read more
Do I understand right that you mean featured thumbnail image for a post and not just any attached image? See get_the_post_thumbnail() function and your usage will be something like this: $output .= get_the_post_thumbnail( $authors_post->ID );
You can set the uploaded image as the post thumbnail via, update_post_meta($post_id,’_thumbnail_id’,$attach_id); Example… if ($_FILES) { foreach ($_FILES as $file => $array) { if ($_FILES[$file][‘error’] !== UPLOAD_ERR_OK) { return “upload error : ” . $_FILES[$file][‘error’]; } $attach_id = media_handle_upload( $file, $post_id ); } } update_post_meta($post_id,’_thumbnail_id’,$attach_id); If you are uploading an array of images, then you … Read more
The set_post_thumbnail function uses the metadata functions to set the featured image. You have two actions to hook into that process: EDIT: The action hooks are now defined different Thanks @dalbaeb! update_postmeta, before the data is written into the database. Previously update_post_meta updated_postmeta, after the data is written into the database. Previously updated_post_meta SECOND EDIT: … Read more
ZipArchive->addFile() method expects local path to file, while wp_get_attachment_url() returns URL. You need to build local path for file from URL or in other way.
Currently, WordPress core image handling/thumbnail creation does not perform zoom-crop. If you need an intermediate image size to be created explicitly, you will need to ensure that you upload an image with equal or larger dimensions as the intermediate image size.