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WordPress

render_block_core_comment_reply_link( array $attributes, string $content, WP_Block $block ): string

Since
6.0.0
Source
wp-includes/blocks/comment-reply-link.php:18
Renders the core/comment-reply-link block on the server.

Compatibility

WordPress
since 6.0.0
PHP
7.4–8.6-dev
  • 6.7.7
  • 6.8.8
  • 6.9.7
  • 7.0.4
  • 7.1.0

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Parameters

$attributesarray
Block attributes.
$contentstring
Block default content.
$blockWP_Block
Block instance.

Return value

string
Return the post comment's reply link.

Performance profile

How much work a call to render_block_core_comment_reply_link() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class
Heavy

Reaches the database via get_post().

Scaling
Scales with input

The body loops, so the work grows with what you pass in.

Instructions
7–65

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 75.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
0

Nothing in core calls this; the cost is only what you spend yourself.

What it touches

  • optionoption read or writeget_option()called directly
  • hookthird-party callbacksapply_filters()one call below render_block_core_comment_reply_link()
  • cacheobject cachewp_cache_get()one call below render_block_core_comment_reply_link()
  • serializeserialisationmaybe_unserialize()one call below render_block_core_comment_reply_link()
  • querycontent queryget_post()one call below render_block_core_comment_reply_link()

Further down the call graph this can also reach transient. That is the worst case, several calls deep and usually down an error path, not what a normal call pays.

What one call costs · 5 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost render_block_core_comment_reply_link() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
!isset($value)7none
isset($value)12get_option()
isset($value) && empty($comment)21get_option(), get_comment()
isset($value) && !empty($comment) && empty($parent_id) && empty($comment_reply_link)39get_option(), get_comment(), get_option(), depth()
isset($value) && !empty($comment) && empty($parent_id) && !empty($comment_reply_link)59–65get_option(), get_comment(), get_option(), depth(), class(), sprintf()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev757–657
8.5757–657
8.4757–6573 fewer instructions than PHP 8.3
8.3787–687
8.2787–687
8.1787–687
7.4787–687

An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.

Uses · 4

Source code

function render_block_core_comment_reply_link( $attributes, $content, $block ) {	if ( ! isset( $block->context['commentId'] ) ) {		return '';	} 	$thread_comments = get_option( 'thread_comments' );	if ( ! $thread_comments ) {		return '';	} 	$comment = get_comment( $block->context['commentId'] );	if ( empty( $comment ) ) {		return '';	} 	$depth     = 1;	$max_depth = get_option( 'thread_comments_depth' );	$parent_id = $comment->comment_parent; 	// Compute comment's depth iterating over its ancestors.	while ( ! empty( $parent_id ) ) {		++$depth;		$parent_id = get_comment( $parent_id )->comment_parent;	} 	$comment_reply_link = get_comment_reply_link(		array(			'depth'     => $depth,			'max_depth' => $max_depth,		),		$comment	); 	// Render nothing if the generated reply link is empty.	if ( empty( $comment_reply_link ) ) {		return;	} 	$classes = array();	if ( isset( $attributes['textAlign'] ) ) {		$classes[] = 'has-text-align-' . $attributes['textAlign'];	}	if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) {		$classes[] = 'has-link-color';	} 	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ) ) ); 	return sprintf(		'<div %1$s>%2$s</div>',		$wrapper_attributes,		$comment_reply_link	);}

Changelog

Introduced in 6.0.0. Unchanged from 6.7.7 through 7.1.0.

  1. 6.7.7
  2. 6.8.8
  3. 6.9.7
  4. 7.0.4
  5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data
Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/blocks/comment-reply-link.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
Something wrong on this page? Report it and it gets fixed in the next regeneration.