twentynineteen_body_classes( array $classes ): string[]
- Source
wp-content/themes/twentynineteen/inc/template-functions.php:16
Compatibility
- WordPress
- core
- 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
string[]- The filtered body class list.
Performance profile
How much work a call to twentynineteen_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
- Trivial
- Scaling
- Constant
- Instructions
- 10–13
- Plugin surface
- None
- Called by
- 0
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, depending on the branch taken. The body compiles to 15.
Nothing here hands control to plugin code.
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 twentynineteen_body_classes() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 10–13 | is_singular(), twentynineteen_image_filters_enabled() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 15 instructions, 10–13 executed per call, 2 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 · 2
- is_singular()Determines whether the query is for an existing single post of any post type (post, attachment, page, custom post types).
- twentynineteen_image_filters_enabled()Returns true if image filters are enabled on the theme options.
Source code
function twentynineteen_body_classes( $classes ) { if ( is_singular() ) { // Adds `singular` to singular pages. $classes[] = 'singular'; } else { // Adds `hfeed` to non-singular pages. $classes[] = 'hfeed'; } // Adds a class if image filters are enabled. if ( twentynineteen_image_filters_enabled() ) { $classes[] = 'image-filters-enabled'; } return $classes;}Changelog
One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
array to string[].verified against sourceAbout this page
- Parsed data
- Generated from the wordpress-develop 7.1.0 tag, from
src/wp-content/themes/twentynineteen/inc/template-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.