Edit: Added example of outputting the attachment’s id. Assigned it to the variable $attachment_id, since that’s how the core code refers to it. Note that the $post object (for the attachment) is passed into the callback of the attachment_fields_to_edit filter, so you’ll have access to all of the attachment’s properties. Yes, this can be done … Read more
Misspelling of thumbnail (thumnail) in the if statement. Also get_the_post_thumbnail does echo the thumbnail, but just returns the html. You need to echo it. Also, for checking if a post has a thumbnail, you can use has_post_thumbnail. if ( has_post_thumbnail($r->ID)) { echo get_the_post_thumbnail($r->ID, array(50,50)); }else{ echo ‘<img src=”https://wordpress.stackexchange.com/questions/44208/image_url”/>’; }
You can do this using the ‘the_content’ filter: add_filter( ‘the_content’, ‘insert_featured_image’, 20 ); function insert_featured_image( $content ) { $content = preg_replace( “/<\/p>/”, “</p>” . get_the_post_thumbnail($post->ID, ‘post-single’), $content, 1 ); return $content; } Of course, you can add options to the the_post_thumbnail() function to define which size of thumbnail you’d like to use, etc… http://codex.wordpress.org/Function_Reference/the_post_thumbnail
First get the registered image sizes and the featured image attachment id: $sizes = get_intermediate_image_sizes(); $post_thumbnail_id = get_post_thumbnail_id(); Loop through the registered sizes and create an array: $images = array(); foreach ( $sizes as $size ) { $images[] = wp_get_attachment_image_src( $post_thumbnail_id, $size ); } Combined as a function to place inside functions.php: function get_all_image_sizes($attachment_id = … Read more
Get the image ID from the URL with attachment_url_to_postid(): $image_id = attachment_url_to_postid( $image_url ); Convert the ID to the thumbnail image URL with wp_get_attachment_image_src: $thumbnail_url = wp_get_attachment_image_src( $image_id, ‘thumbnail’ );
This might work for you as well. It scans the post, then pulls in the image set as ‘featured’. If that doesn’t exist, it returns the first image attached to the post. If there isn’t one, it looks for any image in the post; if that’s not there, it grabs a YouTube screenshot. Put this … Read more
In your theme’s functions.php file: /* register new image size * 200px wide and unlimited height */ add_image_size( ‘wpse73058’, 200, 9999, false ); In a template or the like: if ( has_post_thumbnail() ) { the_post_thumbnail( ‘wpse73058’ ); }
In my opinion the built in <?php add_image_size( $name, $width, $height, $crop ); ?> function is much more flexible, easy and with less overhead. It does resize-crop, so I don’t see a reason to go back to TimThumb (which I used extensively in the past).
You should use one of the following: // Thumbnail wp_get_attachment_thumb_file( $GLOBALS[‘post’]->ID ); // Custom wp_get_attachment_image_src( $attachment_id, $size=”my-thumbnails” ); // Or: wp_get_attachment_image( $attachment_id, $size=”my-thumbnails” );
This is explained in the core ticket #12554. Change label in UI for Post Thumbnail and Page Image to “Featured Image” for both We should change the UI label for the post thumbnail box on post and page editor screens. It’s post thumbnail for posts, and page image for pages, but it’s not always a … Read more