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_wp_kses_allow_note_mention_span( $allowed, string $context ): array<string,

Since
7.1.0
Source
wp-includes/kses.php:1157
Allows the note mention chip markup in comment content.

Description

The notes @ mention completer stores a mention as a chip carrying the mentioned user's ID in a class token: <span class="wp-note-mention user-N">@Name</span>. The default comment allowlist does not allow span at all, so for users without unfiltered_html the mention would be stripped on save.

The allowance is deliberately narrow and always on: span is a semantics-free element and _wp_kses_sanitize_note_mention_classes() reduces its class to the two mention tokens right after kses runs, so regular (including anonymous) commenters gain nothing beyond the inert mention markup itself.

Compatibility

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

Present in 1 of the 5 tracked releases, added in 7.1.0, and compiles on PHP 7.4 through 8.6-dev.

Parameters

$allowed
$contextstring
The kses context.

Return value

array<string,
array<string, bool>> Modified allowed tags structure.

Performance profile

How much work a call to _wp_kses_allow_note_mention_span() 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
Trivial

Touches nothing outside its own arguments.

Scaling
Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions
7–18

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 19.

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 one call costs · 1 distinct outcome

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

WhenInstructionsCalls it makes
always7–18none

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev197–184
8.5197–184
8.4197–184
8.3197–184
8.2197–1841 fewer instruction than PHP 8.1
8.1208–1841 fewer instruction than PHP 7.4
7.4218–194

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.

Source code

View on Trac View on GitHub 

function _wp_kses_allow_note_mention_span( $allowed, $context ): array {	if ( ! is_array( $allowed ) ) {		$allowed = array();	}	if ( 'pre_comment_content' !== $context ) {		return $allowed;	} 	if ( ! isset( $allowed['span'] ) || ! is_array( $allowed['span'] ) ) {		$allowed['span'] = array();	} 	$allowed['span']['class'] = true; 	return $allowed;}

Changelog

Introduced in 7.1.0.

Signature, return type and hooks compared across 1 parsed release.

About this page

Parsed data
Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/kses.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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