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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Get one image from a specified post in the following order:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Featured Image then first image from the_content HTML  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * and filter the post_thumbnail_html  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @param string       $html              The HTML for the image markup.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @param int          $post_id           The post ID to check.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @param int          $post_thumbnail_id The ID of the featured image.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @param string       $size              The image size to return, defaults to 'post-thumbnail'.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @param string|array $attr              Optional. Query string or array of attributes.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @return string      $html              Thumbnail image with markup.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                function jetpack_featured_images_fallback_get_image( $html, $post_id, $post_thumbnail_id, $size, $attr ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$opts = jetpack_featured_images_get_settings();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if ( ! empty( $html ) || (bool) 1 !== (bool) $opts['fallback-option'] ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return trim( $html );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                	if ( jetpack_featured_images_should_load() ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if (   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			( true === $opts['archive'] && ( is_home() || is_archive() || is_search() ) && ! $opts['archive-option'] )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			|| ( true === $opts['post'] && is_single() && ! $opts['post-option'] )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			|| ! $opts['fallback-option']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return trim( $html );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if ( class_exists( 'Jetpack_PostImages' ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		global $_wp_additional_image_sizes;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$args = array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'from_thumbnail'  => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'from_slideshow'  => true,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'from_gallery'    => true,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'from_attachment' => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$image = Jetpack_PostImages::get_image( $post_id, $args );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( ! empty( $image ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$image['width']  = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$image['height'] = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$image['crop']   = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                			if ( array_key_exists( $size, $_wp_additional_image_sizes ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$image['width']  = $_wp_additional_image_sizes[ $size ]['width'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$image['height'] = $_wp_additional_image_sizes[ $size ]['height'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$image['crop']   = $_wp_additional_image_sizes[ $size ]['crop'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$image_src = Jetpack_PostImages::fit_image_url( $image['src'], $image['width'], $image['height'] );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			// Use the theme's crop setting rather than forcing to true  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$image_src = add_query_arg( 'crop', $image['crop'], $image_src );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$html      = '<img src="' . esc_url( $image_src ) . '" title="' . esc_attr( strip_tags( get_the_title() ) ) . '" class="attachment-' . esc_attr( $size ) . ' wp-post-image" />';  | 
            
                            
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                			return trim( $html );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	return trim( $html );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                add_filter( 'post_thumbnail_html', 'jetpack_featured_images_fallback_get_image', 10, 5 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Get URL of one image from a specified post in the following order:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Featured Image then first image from the_content HTML  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @param int          $post_id           The post ID to check.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @param int          $post_thumbnail_id The ID of the featured image.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @param string       $size              The image size to return, defaults to 'post-thumbnail'.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @return string|null $image_src         The URL of the thumbnail image.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                function jetpack_featured_images_fallback_get_image_src( $post_id, $post_thumbnail_id, $size ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$image_src = wp_get_attachment_image_src( $post_thumbnail_id, $size );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$image_src = ( ! empty( $image_src[0] ) ) ? $image_src[0] : null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$opts      = jetpack_featured_images_get_settings();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if ( ! empty( $image_src ) || (bool) 1 !== (bool) $opts['fallback-option'] ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return esc_url( $image_src );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                	if ( jetpack_featured_images_should_load() ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( ( true === $opts['archive'] && ( is_home() || is_archive() || is_search() ) && ! $opts['archive-option'] )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			|| ( true === $opts['post'] && is_single() && ! $opts['post-option'] ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				return esc_url( $image_src );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if ( class_exists( 'Jetpack_PostImages' ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		global $_wp_additional_image_sizes;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$args = array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'from_thumbnail'  => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'from_slideshow'  => true,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'from_gallery'    => true,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'from_attachment' => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$image = Jetpack_PostImages::get_image( $post_id, $args );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( ! empty( $image ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$image['width']  = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$image['height'] = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$image['crop']   = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                			if ( array_key_exists( $size, $_wp_additional_image_sizes ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$image['width']  = $_wp_additional_image_sizes[ $size ]['width'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$image['height'] = $_wp_additional_image_sizes[ $size ]['height'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$image['crop']   = $_wp_additional_image_sizes[ $size ]['crop'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$image_src = Jetpack_PostImages::fit_image_url( $image['src'], $image['width'], $image['height'] );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			// Use the theme's crop setting rather than forcing to true  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$image_src = add_query_arg( 'crop', $image['crop'], $image_src );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    124
                 | 
                                    
                                                     | 
                
                 | 
                			return esc_url( $image_src );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    125
                 | 
                                    
                                                     | 
                
                 | 
                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    126
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    127
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    128
                 | 
                                    
                                                     | 
                
                 | 
                	return esc_url( $image_src );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    129
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    130
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    131
                 | 
                                    
                                                     | 
                
                 | 
                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    132
                 | 
                                    
                                                     | 
                
                 | 
                 * Check if post has an image attached, including a fallback.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    133
                 | 
                                    
                                                     | 
                
                 | 
                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    134
                 | 
                                    
                                                     | 
                
                 | 
                 * @param  int $post The post ID to check.  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                 * @return bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                function jetpack_has_featured_image( $post = null ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                	return (bool) get_the_post_thumbnail( $post );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                 * Adds custom class to the array of post classes.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    145
                 | 
                                    
                                                     | 
                
                 | 
                 * @param array  $classes Classes for the post element.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                 * @param array  $class   Optional. Comma separated list of additional classes.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                 * @param array  $post_id Unique The post ID to check  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
                                                     | 
                
                 | 
                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
                 | 
                                    
                                                     | 
                
                 | 
                 * @return array $classes  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    150
                 | 
                                    
                                                     | 
                
                 | 
                 */  | 
            
            
                                                        
            
                                    
            
            
                | 
                    151
                 | 
                                    
                                                     | 
                
                 | 
                function jetpack_featured_images_post_class( $classes, $class, $post_id ) { | 
            
            
                                                        
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                	$post_password_required = post_password_required( $post_id );  | 
            
            
                                                        
            
                                    
            
            
                | 
                    153
                 | 
                                    
                                                     | 
                
                 | 
                	$opts                   = jetpack_featured_images_get_settings();  | 
            
            
                                                        
            
                                    
            
            
                | 
                    154
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                        
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                	if ( jetpack_has_featured_image( $post_id ) && (bool) 1 === (bool) $opts['fallback-option'] && ! is_attachment() && ! $post_password_required ) { | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                        
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                		$classes[] = 'has-post-thumbnail';  | 
            
            
                                                        
            
                                    
            
            
                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                        
            
                                    
            
            
                | 
                    158
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                        
            
                                    
            
            
                | 
                    159
                 | 
                                    
                                                     | 
                
                 | 
                	return $classes;  | 
            
            
                                                        
            
                                    
            
            
                | 
                    160
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    161
                 | 
                                    
                                                     | 
                
                 | 
                add_filter( 'post_class', 'jetpack_featured_images_post_class', 10, 3 );  | 
            
            
                                                        
            
                                    
            
            
                | 
                    162
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
This check looks for improperly formatted assignments.
Every assignment must have exactly one space before and one space after the equals operator.
To illustrate:
will have no issues, while
will report issues in lines 1 and 2.