wp_kses_split( string $content, array[]|string $allowed_html, string[] $allowed_protocols ): string
- Since
- 1.0.0, 6.6.0
- Source
wp-includes/kses.php:979
Description
It also matches stray > characters.
Compatibility
- WordPress
- since 6.6.0
- 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
$contentstring- Content to filter.
$allowed_htmlarray[]|string- An array of allowed HTML elements and attributes, or a context name such as 'post'. See wp_kses_allowed_html() for the list of accepted context names.
$allowed_protocolsstring[]- Array of allowed URL protocols.
Return value
string- Content with fixed HTML tags
Performance profile
How much work a call to wp_kses_split() 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
- Scaling
- Constant
- Instructions
- 13
- Plugin surface
- None
- Called by
- 1
Touches nothing outside its own arguments.
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5. The body compiles to 13.
Nothing here hands control to plugin code.
1 place in core call this, so the cost is paid more often than your own code shows.
What it touches
- regexregular expression over the whole input
preg_replace_callback()called directly
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_split() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 13 | preg_replace_callback() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 13 instructions, 13 executed per call, 0 branches. The work does not change between versions.
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.
Used by · 1
- wp_kses()Filters text content and strips out disallowed HTML.
Source code
function wp_kses_split( $content, $allowed_html, $allowed_protocols ) { global $pass_allowed_html, $pass_allowed_protocols; $pass_allowed_html = $allowed_html; $pass_allowed_protocols = $allowed_protocols; $token_pattern = <<<REGEX~ ( # Detect comments of various flavors before attempting to find tags. (<!--.*?(-->|$)) # - Normative HTML comments. | </[^a-zA-Z][^>]*> # - Closing tags with invalid tag names. | <![^>]*> # - Invalid markup declaration nodes. Not all invalid nodes # are matched so as to avoid breaking legacy behaviors. ) | (<[^>]*(>|$)|>) # Tag-like spans of text.~xREGEX; return preg_replace_callback( $token_pattern, '_wp_kses_split_callback', $content );}Changelog
Introduced in 1.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
About this page
- Parsed data
- Generated from the wordpress-develop 6.7.7 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
- Something wrong on this page? Report it and it gets fixed in the next regeneration.