Edit file File name : featured-images-fallback.php Content :<?php /** * Theme Tools: functions for Featured Images fallback. * * @package automattic/jetpack */ if ( ! function_exists( 'jetpack_featured_images_fallback_get_image' ) ) { /** * Get one image from a specified post in the following order: * Featured Image then first image from the_content HTML * and filter the post_thumbnail_html * * @deprecated 13.9 Moved to Classic Theme Helper package. * @param string $html The HTML for the image markup. * @param int $post_id The post ID to check. * @param int $post_thumbnail_id The ID of the featured image. * @param string $size The image size to return, defaults to 'post-thumbnail'. * @param string|array $attr Optional. Query string or array of attributes. * * @return string $html Thumbnail image with markup. */ function jetpack_featured_images_fallback_get_image( $html, $post_id, $post_thumbnail_id, $size, $attr ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable _deprecated_function( __FUNCTION__, 'jetpack-13.9' ); $opts = jetpack_featured_images_get_settings(); if ( ! empty( $html ) || (bool) 1 !== (bool) $opts['fallback-option'] ) { return trim( $html ); } if ( jetpack_featured_images_should_load() ) { if ( ( true === $opts['archive'] && ( is_home() || is_archive() || is_search() ) && ! $opts['archive-option'] ) || ( true === $opts['post'] && is_single() && ! $opts['post-option'] ) || ! $opts['fallback-option'] ) { return trim( $html ); } } if ( class_exists( 'Jetpack_PostImages' ) ) { global $_wp_additional_image_sizes; $args = array( 'from_thumbnail' => false, 'from_slideshow' => true, 'from_gallery' => true, 'from_attachment' => false, ); $image = Jetpack_PostImages::get_image( $post_id, $args ); if ( ! empty( $image ) ) { $image['width'] = ''; $image['height'] = ''; $image['crop'] = ''; if ( array_key_exists( $size, $_wp_additional_image_sizes ) ) { $image['width'] = $_wp_additional_image_sizes[ $size ]['width']; $image['height'] = $_wp_additional_image_sizes[ $size ]['height']; $image['crop'] = $_wp_additional_image_sizes[ $size ]['crop']; } // Force `crop` to be a simple boolean, to avoid dealing with WP crop positions. $image['crop'] = boolval( $image['crop'] ); $image_sizes = ''; $width = isset( $image['width'] ) ? intval( $image['width'] ) : null; $height = isset( $image['height'] ) ? intval( $image['height'] ) : null; if ( ! empty( $image['src_width'] ) && ! empty( $image['src_height'] ) && ! empty( $image['width'] ) && ! empty( $image['height'] ) ) { $src_width = intval( $image['src_width'] ); $src_height = intval( $image['src_height'] ); // If we're aware of the source dimensions, calculate the final image height and width. // This allows us to provide them as attributes in the `<img>` tag, to avoid layout shifts. // It also allows us to calculate a `srcset`. if ( $image['crop'] ) { // If we're cropping, the final dimensions are calculated independently of each other. $width = min( $width, $src_width ); $height = min( $height, $src_height ); } else { // If we're not cropping, we need to preserve aspect ratio. $dims = wp_constrain_dimensions( $src_width, $src_height, $width, $height ); $width = $dims[0]; $height = $dims[1]; } $image_src = Jetpack_PostImages::fit_image_url( $image['src'], $width, $height ); $image_srcset = Jetpack_PostImages::generate_cropped_srcset( $image, $width, $height, true ); $image_sizes = 'min(' . $width . 'px, 100vw)'; } else { // If we're not aware of the source dimensions, leave the size calculations to the CDN, and // fall back to a simpler `<img>` tag without `width`/`height` or `srcset`. $image_src = Jetpack_PostImages::fit_image_url( $image['src'], $image['width'], $image['height'] ); // Use the theme's crop setting rather than forcing to true. $image_src = add_query_arg( 'crop', $image['crop'], $image_src ); $image_srcset = null; $image_sizes = null; } $default_attr = array( 'srcset' => $image_srcset, 'sizes' => $image_sizes, 'loading' => is_singular() ? 'eager' : 'lazy', 'decoding' => 'async', 'title' => wp_strip_all_tags( get_the_title() ), 'alt' => '', 'class' => "attachment-$size wp-post-image", ); $image_attr = wp_parse_args( $attr, $default_attr ); $hwstring = image_hwstring( $width, $height ); $html = rtrim( "<img $hwstring" ); $html .= ' src="' . esc_url( $image_src ) . '"'; foreach ( $image_attr as $name => $value ) { if ( $value ) { $html .= " $name=" . '"' . esc_attr( $value ) . '"'; } } $html .= ' />'; return trim( $html ); } } return trim( $html ); } add_filter( 'post_thumbnail_html', 'jetpack_featured_images_fallback_get_image', 10, 5 ); } if ( ! function_exists( 'jetpack_featured_images_fallback_get_image_src' ) ) { /** * Get URL of one image from a specified post in the following order: * Featured Image then first image from the_content HTML * * @deprecated 13.9 Moved to Classic Theme Helper package. * @param int $post_id The post ID to check. * @param int $post_thumbnail_id The ID of the featured image. * @param string $size The image size to return, defaults to 'post-thumbnail'. * * @return string|null $image_src The URL of the thumbnail image. */ function jetpack_featured_images_fallback_get_image_src( $post_id, $post_thumbnail_id, $size ) { _deprecated_function( __FUNCTION__, 'jetpack-13.9' ); $image_src = wp_get_attachment_image_src( $post_thumbnail_id, $size ); $image_src = ( ! empty( $image_src[0] ) ) ? $image_src[0] : null; $opts = jetpack_featured_images_get_settings(); if ( ! empty( $image_src ) || (bool) 1 !== (bool) $opts['fallback-option'] ) { return esc_url( $image_src ); } if ( jetpack_featured_images_should_load() ) { if ( ( true === $opts['archive'] && ( is_home() || is_archive() || is_search() ) && ! $opts['archive-option'] ) || ( true === $opts['post'] && is_single() && ! $opts['post-option'] ) ) { return esc_url( $image_src ); } } if ( class_exists( 'Jetpack_PostImages' ) ) { global $_wp_additional_image_sizes; $args = array( 'from_thumbnail' => false, 'from_slideshow' => true, 'from_gallery' => true, 'from_attachment' => false, ); $image = Jetpack_PostImages::get_image( $post_id, $args ); if ( ! empty( $image ) ) { $image['width'] = ''; $image['height'] = ''; $image['crop'] = ''; if ( array_key_exists( $size, $_wp_additional_image_sizes ) ) { $image['width'] = $_wp_additional_image_sizes[ $size ]['width']; $image['height'] = $_wp_additional_image_sizes[ $size ]['height']; $image['crop'] = $_wp_additional_image_sizes[ $size ]['crop']; } $image_src = Jetpack_PostImages::fit_image_url( $image['src'], $image['width'], $image['height'] ); // Use the theme's crop setting rather than forcing to true. $image_src = add_query_arg( 'crop', $image['crop'], $image_src ); return esc_url( $image_src ); } } return esc_url( $image_src ); } } if ( ! function_exists( 'jetpack_has_featured_image' ) ) { /** * Check if post has an image attached, including a fallback. * * @deprecated 13.9 Moved to Classic Theme Helper package. * @param int $post The post ID to check. * * @return bool */ function jetpack_has_featured_image( $post = null ) { _deprecated_function( __FUNCTION__, 'jetpack-13.9' ); return (bool) get_the_post_thumbnail( $post ); } } if ( ! function_exists( 'jetpack_featured_images_post_class' ) ) { /** * Adds custom class to the array of post classes. * * @deprecated 13.9 Moved to Classic Theme Helper package. * @param array $classes Classes for the post element. * @param array $class Optional. Comma separated list of additional classes. * @param array $post_id Unique The post ID to check. * * @return array $classes */ function jetpack_featured_images_post_class( $classes, $class, $post_id ) { _deprecated_function( __FUNCTION__, 'jetpack-13.9' ); $post_password_required = post_password_required( $post_id ); $opts = jetpack_featured_images_get_settings(); if ( jetpack_has_featured_image( $post_id ) && (bool) 1 === (bool) $opts['fallback-option'] && ! is_attachment() && ! $post_password_required && 'post' === get_post_type() ) { $classes[] = 'has-post-thumbnail'; $classes[] = 'fallback-thumbnail'; } return $classes; } add_filter( 'post_class', 'jetpack_featured_images_post_class', 10, 3 ); } Save