1 <?php

     2 /**

     3  * Server-side rendering of the `core/post-featured-image` block.

     4  *

     5  * @package WordPress

     6  */

     7 

     8 /**

     9  * Renders the `core/post-featured-image` block on the server.

    10  *

    11  * @param array    $attributes Block attributes.

    12  * @param string   $content    Block default content.

    13  * @param WP_Block $block      Block instance.

    14  * @return string Returns the featured image for the current post.

    15  */

    16 function render_block_core_post_featured_image( $attributes, $content, $block ) {

    17 	if ( ! isset( $block->context['postId'] ) ) {

    18 		return '';

    19 	}

    20 	$post_ID = $block->context['postId'];

    21 

    22 	$featured_image = get_the_post_thumbnail( $post_ID );

    23 	if ( ! $featured_image ) {

    24 		return '';

    25 	}

    26 

    27 	if ( isset( $attributes['isLink'] ) && $attributes['isLink'] ) {

    28 		$featured_image = sprintf( '<a href="%1s">%2s</a>', get_the_permalink( $post_ID ), $featured_image );

    29 	}

    30 

    31 	$wrapper_attributes = get_block_wrapper_attributes();

    32 

    33 	return '<figure ' . $wrapper_attributes . '>' . $featured_image . '</figure>';

    34 }

    35 

    36 /**

    37  * Registers the `core/post-featured-image` block on the server.

    38  */

    39 function register_block_core_post_featured_image() {

    40 	register_block_type_from_metadata(

    41 		__DIR__ . '/post-featured-image',

    42 		array(

    43 			'render_callback' => 'render_block_core_post_featured_image',

    44 		)

    45 	);

    46 }

    47 add_action( 'init', 'register_block_core_post_featured_image' );