get_editor_stylesheets(): string[]
- Since
- 4.0.0
- Source
wp-includes/theme.php:2239
Compatibility
- WordPress
- since 4.0.0
- 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.
Return value
string[]- If registered, a list of editor stylesheet URLs.
Performance profile
How much work a call to get_editor_stylesheets() 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
- Light
- Scaling
- Scales with input
- Instructions
- 8–43
- Plugin surface
- 1 hook
- Called by
- 1
Touches nothing outside its own arguments.
The body loops, so the work grows with how much data it finds.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 82.
Third-party callbacks on 'editor_stylesheets' run inside this call, and their cost is not bounded by anything here.
1 place in core call this, so the cost is paid more often than your own code shows.
What it touches
- hookthird-party callbacks
apply_filters()called directly
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 get_editor_stylesheets() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 8–11 | apply_filters() |
!empty($value) && !is_child_theme() | 32–34 | array_filter(), array_unique(), get_stylesheet_directory_uri(), get_stylesheet_directory(), is_child_theme(), apply_filters() |
!empty($value) && is_child_theme() | 40–43 | array_filter(), array_unique(), get_stylesheet_directory_uri(), get_stylesheet_directory(), is_child_theme(), get_template_directory_uri(), get_template_directory(), apply_filters() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 82 | 8–43 | 14 | |
| 8.5 | 82 | 8–43 | 14 | |
| 8.4 | 82 | 8–43 | 14 | 3 fewer instructions than PHP 8.3 |
| 8.3 | 85 | 8–43 | 14 | |
| 8.2 | 85 | 8–43 | 14 | |
| 8.1 | 85 | 8–43 | 14 | 3 fewer instructions than PHP 7.4 |
| 7.4 | 88 | 9–46 | 14 |
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.
Hooks and filters fired · 1
One hook fires while get_editor_stylesheets() runs, in this order:
- apply_filters( editor_stylesheets )filterline 2283 (+44 into the body)
Filters the array of URLs of stylesheets applied to the editor.
Uses · 7
- get_stylesheet_directory_uri()Retrieves stylesheet directory URI for the active theme.
- get_stylesheet_directory()Retrieves stylesheet directory path for the active theme.
- sanitize_url()Sanitizes a URL for database or redirect usage.
- is_child_theme()Whether a child theme is in use.
- get_template_directory_uri()Retrieves template directory URI for the active theme.
- get_template_directory()Retrieves template directory path for the active theme.
- apply_filters()Calls the callback functions that have been added to a filter hook.
Used by · 1
Source code
function get_editor_stylesheets() { $stylesheets = array(); // Load editor_style.css if the active theme supports it. if ( ! empty( $GLOBALS['editor_styles'] ) && is_array( $GLOBALS['editor_styles'] ) ) { $editor_styles = $GLOBALS['editor_styles']; $editor_styles = array_unique( array_filter( $editor_styles ) ); $style_uri = get_stylesheet_directory_uri(); $style_dir = get_stylesheet_directory(); // Support externally referenced styles (like, say, fonts). foreach ( $editor_styles as $key => $file ) { if ( preg_match( '~^(https?:)?//~', $file ) ) { $stylesheets[] = sanitize_url( $file ); unset( $editor_styles[ $key ] ); } } // Look in a parent theme first, that way child theme CSS overrides. if ( is_child_theme() ) { $template_uri = get_template_directory_uri(); $template_dir = get_template_directory(); foreach ( $editor_styles as $key => $file ) { if ( $file && file_exists( "$template_dir/$file" ) ) { $stylesheets[] = "$template_uri/$file"; } } } foreach ( $editor_styles as $file ) { if ( $file && file_exists( "$style_dir/$file" ) ) { $stylesheets[] = "$style_uri/$file"; } } } /** * Filters the array of URLs of stylesheets applied to the editor. * * @since 4.3.0 * * @param string[] $stylesheets Array of URLs of stylesheets to be applied to the editor. */ return apply_filters( 'editor_stylesheets', $stylesheets );}Changelog
Introduced in 4.0.0. 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 6.9.7 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
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