post-thumbnails

This Trac ticket here describes your problem and the cause: https://core.trac.wordpress.org/ticket/26321 I got a warning/error related to update_post_thumbnail_cache() function: Warning: Invalid argument supplied for foreach() in ./wp-includes/post-thumbnail-template.php on line 64 The $wp_query->posts array is missing, but we have the single $wp_query->post. foreach ( $wp_query->posts as $post ) { if ( $id = get_post_thumbnail_id( $post->ID ) … Read more

there is a similar question here: Post type specific upload folder in 3.5 Just add an IF case whenever the wanted post type is the one you want to be in another folder, if not, return the directory given by the filter.

Put this line in your function.php add_theme_support( ‘post-thumbnails’ ); and use this code for image if ( has_post_thumbnail() ) { the_post_thumbnail(); }

In what way is it affecting your post thumbnails? I cleaned up your code a bit. If you can show me the output you’re getting I’ll be able to help you further. <?php global $post; $compare_date = strtotime( “2018-03-01” ); $post_date = strtotime( $post->post_date ); if ( has_post_thumbnail() ) { if ( $compare_date < $post_date … Read more

Try this code. Then temporarily set permissions to the cache folder to 774 and the timthumb.php file to 750, you can increase or decrease the permissions as you see fit (or aslong as it stops working, then it’ll be time to loosen up the permissions). <?php // If there are images get them if ( … Read more

Very likely, your issue is the large number of images, causing the processing to time out. Try increasing your PHP script execution time, and see if either Plugin can complete. Alternatively, I believe that one or both of those Plugins allows for manual thumbnail regeneration, via Dashboard -> Media.

FWIW, as a workaround, Twenty Eleven has this built in.