WordPress wp_is_mobile() can be the function that you’re looking for. // Use the build-in function if WP if(wp_is_mobile()) // On mobile { the_post_thumbnail_url(‘featured-image-mobile’); } else { the_post_thumbnail_url(‘featured-image’); }
The meta tag should get inserted in the <head> section of a website. Regardless if you are using a header.php and footer.php or not, you should have a <head> section in your document. For example the code in your document should be something like: <!DOCTYPE html> <html <?php language_attributes(); ?>> <head> <meta charset=”<?php bloginfo( ‘charset’ … Read more
You could add negative margins to the video element. If inline (adjust as needed): <video id=”video_688987199_html5_api” class=”vjs-tech” preload=”auto” autoplay=”” data-setup=”{}” src=”https://wordpress.stackexchange.com/wp-content/uploads/2018/04/video.mp4″ poster=”null” style=”margin-left: -50px; margin-right: -50px;”> If in stylesheet (again… adjust as needed): .vjs-tech { margin-left: -50px; margin-right: -50px; } Another option is to set the width as something greater than the parent div’s width. … Read more
How can the global $content_width affect the post thumbnail ? Let’s check how the global $content_width can affect the output of the_post_thumbnail( ‘large’ ) and trace out the relevant function dependencies: the_post_thumbnail() \ \__ get_the_post_thumbnail() \ \__ wp_get_attachment_image() \ \__ wp_get_attachment_image_src() \ \__ image_downsize() \ \__ image_constrain_size_for_editor() and for the large size we have specifically … Read more
<?php $images = get_field(‘gallery’); $size=”full”; // (thumbnail, medium, large, full or custom size) $rand = array_rand($images, 1); if( $images ): ?> <?php echo wp_get_attachment_image( $images[$rand][‘ID’], $size ); ?> <?php endif; ?> This code should work. array_rand() return key if second param set to 1 or array with keys if second param > 1
It seems to be a feature and not a bug: screen sizes are not added to scrset if you upload a gif as teaser image: https://core.trac.wordpress.org/ticket/34528 This applies only to teaser images and not images in the article. I used 8-Bit PNG instead and now all scrset attributes are filled.
Do not duplicate – just switch to the new tag as soon as 3.8 is released. The intent of this change is to replace the old tag, not to have both of them in use.
The issue I was having was with some conflicting code I had in my functions file (see below). I usually use this code to remove width/height attributes from being hard-coded into the element in the content area. Removing these somehow appears to mess up the new responsive image implementation in WordPress though. As soon as … Read more
You can’t combine PHP and CSS in this way, as PHP is server-side and does not know client screen width, while CSS is client-side and does not know server functions. Instead, you could output both image sizes and then use CSS to show/hide them. eg: <div class=”image-thumbnail”><?php the_post_thumbnail(‘thumbnail’); ?></div> <div class=”image-fullsize”><?php the_post_thumbnail(‘full’); ?></div> and CSS: … Read more
After a few days reading about srcset attribute (Thanks Benoti for point to this!), definitely, I can see that this is the right way. This solution is simple, enough to solve this question, although srcset attribute with <picture> tag is much more powerfull. My solution: Declare sizes in functions.php add_image_size( ‘c200x200’, 200, 200, true ); … Read more