_add_default_theme_supports()
- Since
- 5.9.0
- Source
wp-includes/theme.php:4387
Description
See 'after_setup_theme'.
Cost profile
Measured from the compiled opcodes, not from a stopwatch. Every number here is identical on any machine that runs the same PHP version, and every function in core is ranked by these figures.
- Cost class
- Trivial
- Scaling
- Constant
- Instructions
- 6–15
- 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 8.4, depending on the branch taken. The body compiles to 51.
Nothing here hands control to plugin code.
Nothing in core calls this; the cost is only what you spend yourself.
What it touches
- hookthird-party callbacks
apply_filters()one call below _add_default_theme_supports()
Further down the call graph this can also reach option, cache, serialize, transient 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 · 3 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost _add_default_theme_supports() can have, taken from its control-flow graph on PHP 8.4.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 6 | none |
current_theme_supports() | 10 | current_theme_supports() |
!current_theme_supports() | 14–15 | current_theme_supports()current_theme_supports() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
7.4 | 51 | 6–15 | 4 | Compiles to the same instructions |
8.1 | 51 | 6–15 | 4 | Compiles to the same instructions |
8.2 | 51 | 6–15 | 4 | Compiles to the same instructions |
8.3 | 51 | 6–15 | 4 | Compiles to the same instructions |
8.4 | 51 | 6–15 | 4 | Compiles to the same instructions |
Oldest PHP that compiles this body: 7.4. An instruction is not a fixed amount of time, so a version with the same count is not necessarily the same speed; what the count rules out is a difference in the work itself.
Uses · 4
- wp_is_block_theme()Returns whether the active theme is a block-based theme or not.
- add_theme_support()Registers theme support for a given feature.
- add_filter()Adds a callback function to a filter hook.
- current_theme_supports()Checks a theme's support for a given feature.
Source
function _add_default_theme_supports() { if ( ! wp_is_block_theme() ) { return; } add_theme_support( 'post-thumbnails' ); add_theme_support( 'responsive-embeds' ); add_theme_support( 'editor-styles' ); /* * Makes block themes support HTML5 by default for the comment block and search form * (which use default template functions) and `[caption]` and `[gallery]` shortcodes. * Other blocks contain their own HTML5 markup. */ add_theme_support( 'html5', array( 'comment-form', 'comment-list', 'search-form', 'gallery', 'caption', 'style', 'script' ) ); add_theme_support( 'automatic-feed-links' ); add_filter( 'should_load_separate_core_block_assets', '__return_true' ); add_filter( 'should_load_block_assets_on_demand', '__return_true' ); /* * Remove the Customizer's Menus panel when block theme is active. */ add_filter( 'customize_panel_active', static function ( $active, WP_Customize_Panel $panel ) { if ( 'nav_menus' === $panel->id && ! current_theme_supports( 'menus' ) && ! current_theme_supports( 'widgets' ) ) { $active = false; } return $active; }, 10, 2 );}History
Introduced in 5.9.0. 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-includes/theme.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.