images

Watermarking Images with WordPress with WP_Image_Editor

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If you really want to use these classes the only way would be to extend both existing implementations Wp_Image_Editor_Imagick and Wp_Image_Editor_GD. Here’s an approach for the Wp_Image_Editor_GD: namespace WPSE98156; use Wp_Image_Editor_Gd, Wp_Error; class WatermarkImageEditor extends Wp_Image_Editor_Gd { /* * @param resource $stamp (A GD image resource) * * @return bool|WP_Error */ public function stamp_watermark( $stamp … Read more

Is there a simple way to just insert a link to an image (without inserting an image)?

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I found a solution based on the code of this page: https://core.trac.wordpress.org/ticket/22180 All attachment files have a post status of ‘inherit’. So first you need to add “inherit” as one of the possible post status to search for. You can use the wp_link_query_args filter to do that. function my_wp_link_query_args( $query ) { if (is_admin()){ $query[‘post_status’] … Read more

Auto Add Image Title,Caption,Alt Text,Description while uploading Images in WordPress

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added_post_meta seems like a good time to hook into a new image. Not only is the default meta already set but the function gives you the $post_id along with $meta_value which holds the attachment metadata. From there you can get all the fields and set the ones you want. add_action(‘added_post_meta’, ‘wpse_20151219_after_post_meta’, 10, 4); function wpse_20151219_after_post_meta($meta_id, … Read more

Is there a hook which fires after all thumbnails are generated?

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Thumbnails in WordPress can be generated by using wp_generate_attachment_metadata(), this function fires a filter after generating all the thumbnails wp_generate_attachment_metadata and the filter provides $metadata and $attachment_id to the hooked functions. You can hook your custom function to this filter. $metadata : Attachment metadata. What you need is $metadata[‘sizes’][‘<size-name>’], the <size-name> is the name of … Read more

get_post_gallery with Gutenberg

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Using birgire’s suggestions, I came up with the following solution that is working well with both the old pre-WP 4.x data and the newer posts that have been added under 5.0. // if there is a gallery block do this if (has_block(‘gallery’, $post->post_content)) { $post_blocks = parse_blocks($post->post_content); $ids = $post_blocks[0][attrs][ids]; } // if there is … Read more

What’s the proper way to find and remove duplicate images from posts and the media library?

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combining the two answer on this page, I found this worked. $args = new WP_Query(array( ‘post_type’ => ‘post’, ‘posts_per_page’ => -1 )); $loop = new WP_Query($args); while($loop->have_posts()) { the_post(); $args2 = array( ‘order’ => ‘ASC’, ‘post_type’ => ‘attachment’, ‘post_parent’ => $post->ID, ‘post_mime_type’ => ‘image’); $attachments = get_posts($args2); if($attachments) { foreach ($attachments as $img_post) { if( … Read more