<form method="POST">
    <h3>Editing: comment-date.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php
/**
 * Server-side rendering of the `core/comment-date` block.
 *
 * @package WordPress
 */

/**
 * Renders the `core/comment-date` block on the server.
 *
 * @since 6.0.0
 *
 * @param array    $attributes Block attributes.
 * @param string   $content    Block default content.
 * @param WP_Block $block      Block instance.
 * @return string Return the post comment's date.
 */
function render_block_core_comment_date( $attributes, $content, $block ) {
	if ( ! isset( $block-&gt;context['commentId'] ) ) {
		return '';
	}

	$comment = get_comment( $block-&gt;context['commentId'] );
	if ( empty( $comment ) ) {
		return '';
	}

	$classes = ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) ? 'has-link-color' : '';

	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' =&gt; $classes ) );
	if ( isset( $attributes['format'] ) &amp;&amp; 'human-diff' === $attributes['format'] ) {
		// translators: %s: human-readable time difference.
		$formatted_date = sprintf( __( '%s ago' ), human_time_diff( get_comment_date( 'U', $comment ) ) );
	} else {
		$formatted_date = get_comment_date( empty( $attributes['format'] ) ? '' : $attributes['format'], $comment );
	}
	$link = get_comment_link( $comment );

	if ( ! empty( $attributes['isLink'] ) ) {
		$formatted_date = sprintf( '&lt;a href=&quot;%1s&quot;&gt;%2s&lt;/a&gt;', esc_url( $link ), $formatted_date );
	}

	return sprintf(
		'&lt;div %1$s&gt;&lt;time datetime=&quot;%2$s&quot;&gt;%3$s&lt;/time&gt;&lt;/div&gt;',
		$wrapper_attributes,
		esc_attr( get_comment_date( 'c', $comment ) ),
		$formatted_date
	);
}

/**
 * Registers the `core/comment-date` block on the server.
 *
 * @since 6.0.0
 */
function register_block_core_comment_date() {
	register_block_type_from_metadata(
		__DIR__ . '/comment-date',
		array(
			'render_callback' =&gt; 'render_block_core_comment_date',
		)
	);
}
add_action( 'init', 'register_block_core_comment_date' );
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