To get attached (i.e. child) images of a post, try using get_children(). e.g.: <?php $child_image_args = array( ‘post_mime_type’ => ‘image’, ‘post_parent’ => $postID, ‘post_type’ => ‘attachment’ ); $child_images = get_children( $child_image_args ); ?> Which returns an associative array of child images. Then, just loop through them, e.g. using wp_get_attachment_image(), to output. e.g.: <div id=”nivoslider”> <?php … Read more
Unfortunately the logic of the attachment details isn’t made to be used standalone – it requires the grid that opens it. You can however use the get_media_item( attachment_id ) method to receive the HTML of the form for modifying images: https://developer.wordpress.org/reference/functions/get_media_item/
As far as i know it is possible with image_size_names_choose hook (see https://codex.wordpress.org/Plugin_API/Filter_Reference/image_size_names_choose). Example: // add your custom size function my_setup_image_sizes() { add_image_size( ‘wide-image’, 900, 0); } add_action( ‘after_setup_theme’, ‘my_setup_image_sizes’ ); // add custom size to editor image size options function my_editor_image_sizes( $sizes ) { $sizes = array_merge( $sizes, array( ‘wide-image’ => __( ‘Image 900px … Read more
Here you go: if(!current_user_can(‘delete_others_posts’)){ /*Handling wp media uloads*/ add_filter(‘wp_handle_upload_prefilter’,’lets_handle_img_width’); function lets_handle_img_width($file) { $img = getimagesize($file[‘tmp_name’]); $width = $img[0]; if ($width < 350){ $file[‘error’] = “Image is small too small. Get something of width more than 350px.”; } return $file; } } Check official documentation about wp_handle_upload_prefilter.
Use http://wordpress.org/extend/plugins/auto-image-resizer/ Add this to your functions.php: function prune_image_sizes($sizes) { // You can add other size like that for remove those sizes // unset($sizes[‘medium’]); unset($sizes[‘large’]); return $sizes; } add_filter(‘intermediate_image_sizes_advanced’, ‘prune_image_sizes’); Set your large image option to 800px in media options panel. So what did you do? System will not create large size of image but … Read more
To show a srcset, there must be multiple image sizes of the same aspect ratio. When you set your thumbnail to hard crop without creating any other image sizes you are ensuring that there won’t be a srcset. You might find my answer here helpful. Briefly, in your case, adding this line: add_image_size ( ‘double-size’, … Read more
You will need to do a check for the image size before you add the add_image_size in that case. You can use wp_get_attachment_metadata() to find the size of the image. https://codex.wordpress.org/Function_Reference/wp_get_attachment_metadata
Considering that you will come up with a solution to the accessibility issue pointed by @toscho… Putting a lower priority (later execution) to the filter does the job. $priority (integer) (optional) Used to specify the order in which the functions associated with a particular action are executed. Lower numbers correspond with earlier execution, and functions … Read more
Your better off adding your custom image data when you insert it into a post using media_send_to_editor, the caveat is this will not be applied to any existing images, only ones inserted after adding the function. To apply it to to existing content you will have use preg_match on the_content filter, but this can significantly … Read more
You have not created the attachment as link to the post, you will need to do that first. Then you can use in the content. Alternative it is possibel to upload to other path, but better is a link in the post, post-ID to attachment-ID. Easiest way to do that is with wp_insert_attachment(). This function … Read more