get_raw_theme_root( string $stylesheet_or_template, bool $skip_cache = false ): string
- Since
- 3.1.0
- Source
wp-includes/theme.php:697
Compatibility
- WordPress
- since 3.1.0
- 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
$stylesheet_or_templatestring- The stylesheet or template name of the theme.
$skip_cachebooloptional- Whether to skip the cache.
Defaults to false, meaning the cache is used.Default:false
Return value
string- Theme root.
Performance profile
How much work a call to get_raw_theme_root() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.
- Cost class
- Moderate
- Scaling
- Constant
- Instructions
- 6–34
- Plugin surface
- None
- Called by
- 7
Reads stored settings via get_option(), cached per request but not free on a cold cache.
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 40.
Nothing here hands control to plugin code.
7 places in core call this, so the cost is paid more often than your own code shows.
What it touches
- optionoption read or write
get_option()called directly - hookthird-party callbacks
apply_filters()one call below get_raw_theme_root() - cacheobject cache
wp_cache_get()one call below get_raw_theme_root() - serializeserialisation
maybe_unserialize()one call below get_raw_theme_root() - transienttransient
get_site_transient()one call below get_raw_theme_root()
Further down the call graph this can also reach query. That is the worst case, several calls deep and usually down an error path, not what a normal call pays.
What one call costs · 6 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost get_raw_theme_root() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 6–13 | none |
is_array($wp_theme_directories) && empty($theme_root) | 18–20 | get_theme_roots() |
is_array($wp_theme_directories) && !empty($theme_root) | 23 | get_option(), get_option() |
is_array($wp_theme_directories) && !empty($theme_root) | 27 | get_option(), get_option(), get_option() |
is_array($wp_theme_directories) && empty($theme_root) | 28–30 | get_option(), get_option(), get_theme_roots() |
is_array($wp_theme_directories) && empty($theme_root) | 32–34 | get_option(), get_option(), get_option(), get_theme_roots() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 40 instructions, 6–34 executed per call, 7 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
- get_option()Retrieves an option value based on an option name.
- get_theme_roots()Retrieves theme roots.
Used by · 7
- WP_Customize_Manager::get_stylesheet_root()Retrieves the stylesheet root of the previewed theme.
- WP_Customize_Manager::get_template_root()Retrieves the template root of the previewed theme.
- get_theme_root()Retrieves path to themes directory.
- get_theme_root_uri()Retrieves URI for themes directory.
- switch_theme()Switches the theme.
- wp_get_theme()Gets a WP_Theme object for a theme.
- wp_get_themes()Returns an array of WP_Theme objects based on the arguments.
Source code
function get_raw_theme_root( $stylesheet_or_template, $skip_cache = false ) { global $wp_theme_directories; if ( ! is_array( $wp_theme_directories ) || count( $wp_theme_directories ) <= 1 ) { return '/themes'; } $theme_root = false; // If requesting the root for the active theme, consult options to avoid calling get_theme_roots(). if ( ! $skip_cache ) { if ( get_option( 'stylesheet' ) === $stylesheet_or_template ) { $theme_root = get_option( 'stylesheet_root' ); } elseif ( get_option( 'template' ) === $stylesheet_or_template ) { $theme_root = get_option( 'template_root' ); } } if ( empty( $theme_root ) ) { $theme_roots = get_theme_roots(); if ( ! empty( $theme_roots[ $stylesheet_or_template ] ) ) { $theme_root = $theme_roots[ $stylesheet_or_template ]; } } return $theme_root;}Changelog
Introduced in 3.1.0. 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-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.