There is no clean way to do this. Each image stores image information in post meta table, but as a part of the serialized PHP string. Using MySQL for that is out of the question because MySQL doesn’t have a syntax for extracting regular expressions matched content, it can only use perform true/false/like expressions using … Read more
No it certainly doesn’t. It is simply a case of poor choice of naming. The function should have been named unset_post_thumbnail(), particularly when we already have set_post_thumbnail(). Today’s WordPress annoyance.
It appears you’ve taken the super long winded route and done each step of the upload manually. But why not use the sideloading function that does it all for you? The majority of your code can be replaced with this: // These files need to be included as dependencies when on the front end. require_once( … Read more
<?php $navMenu = wp_get_nav_menu_items(6); foreach ($navMenu as $menu) { echo ‘<li style=”background-image:url( ‘. get_the_post_thumbnail_url( $menu->object_id ) .’ )”>’; echo ‘<a href=”‘. $menu->url .'”>’. $menu->title .'</a>’; } ?>
The featured image’s ID is saved in a post meta field by the name of _thumbnail_id, so with a little bit of joining, you can use MySQL to search them for you: SELECT p1.ID as ID1, p2.ID AS ID2 FROM wp_posts p1 LEFT JOIN wp_postmeta pm1 ON (p1.ID = pm1.post_id AND pm1.meta_key = ‘_thumbnail_id’), wp_posts … Read more
The 2nd argument of the_post_thumbnail() is an array of attributes and values, so you can just set your own srcset attribute that way: the_post_thumbnail( ‘my-custom-size’, array( ‘srcset’ => wp_get_attachment_image_url( get_post_thumbnail_id(), ‘my-other-custom-size’ ) . ‘ 1000w’, ) );
I don’t want to use the many available plugins or a custom field. Even a code only solution would use a custom field for this. It’s metadata about the post, so you use a custom field for it. That’s what custom fields are. Also, the code for your custom solution would live in a plugin, … Read more
has_category() will do the trick. You can pass it an ID or slug, or an array of IDs or slugs, and it will return true if the post has any of the given categories: // ID if ( has_category( 1 ) ) { the_post_thumbnail( ‘full’, array( ‘class’ => ‘img-responsive’ ) ); } // Slug if … Read more
Try To Use it Like This : <?php the_post_thumbnail( array (475, 317), [ ‘class’ => ‘border–round’ ] ); ?>
Without more context it’s hard to be sure, but it looks like this function is being called twice: once for each link ($direction=”next” and $direction=”previous”). The $posting parameter looks to be the next or previous post. If my assumptions are correct, you need to get the thumbnail for that post: $thumbnail = get_the_post_thumbnail( $posting->ID ); … Read more