post-thumbnails

Get Post thumbnail without width/height attribute

So, I finally noticed that what I was doing, was returning an array, and that I needed the [0] of that array. The code is on the ugly side, but it works. <?php $thumb_id = get_post_thumbnail_id(); $small_screen = wp_get_attachment_image_src($thumb_id,’small-screen’, true); $medium_screen = wp_get_attachment_image_src($thumb_id,’medium-screen’, true); $large_screen = wp_get_attachment_image_src($thumb_id,’large-screen’, true); $extra_large_screen = wp_get_attachment_image_src($thumb_id,’extra-large-screen’, true); ?> – <div … Read more

global $wpdb; $children = get_posts(‘post_type=event&numberposts=1’); foreach ($children as $child) { $origParentID = get_post_meta($child->ID, ‘mainpictureid’, true); $parsed_url = explode( parse_url( WP_CONTENT_URL, PHP_URL_PATH ), ‘http://localhost/wp-content/uploads/2015/08/’.$origParentID.’.jpg’ ); $attachment = $wpdb->get_col( $wpdb->prepare( “SELECT ID FROM {$wpdb->prefix}posts WHERE guid RLIKE %s;”, $parsed_url[1] ) ); set_post_thumbnail( $child->ID, $attachment[0]); }

Finally found the issue: I was using a filter in my site specific plugin to remove image attributes. Somehow it also deleted the full image URL. add_filter( ‘post_thumbnail_html’, ‘remove_img_attributes’, 10 ); Removing that filter solved the issue.

Do not use $post_id. From this answer by @s_ha_dum (which you should go and read). $post_id is a variable name used commonly to refer the post ID, but it isn’t a Core variable the way that $post is. In the context as in your question, you would want to use $recent[“ID”] (which will hold the … Read more

One option would be to do it client-side via javascript – set up some javascript to run after the page loads and cycle through all featured images that are on the page, get their dimensions and then add the class as need be. You can use the img.naturalWidth and img.naturalHeight parameters of the image element, … Read more

Edit: This need to be placed into your template. if( class_exists(‘Dynamic_Featured_Image’) ) { //if you only want to show 2nd featured image you can do if (isset($featured_images[1])) { $image = $featured_images[1]; echo “<a href=”https://wordpress.stackexchange.com/questions/208168/{$image[“full’]}’>”; echo “<img src=”https://wordpress.stackexchange.com/questions/208168/{$image[“thumb’]}’ alt=”Dynamic Featured Image” />”; echo “</a>”; } }