twentysixteen_body_classes( array $classes ): array
- Since
- Twenty Sixteen 1.0
- Source
wp-content/themes/twentysixteen/functions.php:476
Compatibility
- WordPress
- since Twenty Sixteen 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 every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.
Parameters
$classesarray- Classes for the body element.
Return value
array- (Maybe) filtered body classes.
Performance profile
How much work a call to twentysixteen_body_classes() 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
- Moderate
- Scaling
- Constant
- Instructions
- 15–23
- Plugin surface
- None
- Called by
- 0
Reads stored settings via get_transient(), cached per request but not free on a cold cache.
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 23.
Nothing here hands control to plugin code.
Nothing in core calls this; the cost is only what you spend yourself.
What it touches
- transienttransient
get_transient()one call below twentysixteen_body_classes() - hookthird-party callbacks
apply_filters()one call below twentysixteen_body_classes()
Further down the call graph this can also reach cache, option, serialize and query. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.
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 twentysixteen_body_classes() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 15–23 | get_background_image(), is_multi_author(), is_active_sidebar(), is_singular() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 23 instructions, 15–23 executed per call, 4 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.
Uses · 4
- get_background_image()Retrieves background image for custom background.
- is_multi_author()Determines whether this site has more than one author.
- is_active_sidebar()Determines whether a sidebar contains widgets.
- is_singular()Determines whether the query is for an existing single post of any post type (post, attachment, page, custom post types).
Source code
function twentysixteen_body_classes( $classes ) { // Adds a class of custom-background-image to sites with a custom background image. if ( get_background_image() ) { $classes[] = 'custom-background-image'; } // Adds a class of group-blog to sites with more than 1 published author. if ( is_multi_author() ) { $classes[] = 'group-blog'; } // Adds a class of no-sidebar to sites without active sidebar. if ( ! is_active_sidebar( 'sidebar-1' ) ) { $classes[] = 'no-sidebar'; } // Adds a class of hfeed to non-singular pages. if ( ! is_singular() ) { $classes[] = 'hfeed'; } return $classes;}Changelog
Introduced in Twenty Sixteen 1.0. 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 7.1.0 tag, from
src/wp-content/themes/twentysixteen/functions.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.