get_theme_feature_list( bool $api = true ): array

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Parameters

$apibooloptional

Whether try to fetch tags from the WordPress.org API. Defaults to true.Default: true

Return value

array

Array of features keyed by category with translations keyed by slug.

Performance profile

How much work a call to get_theme_feature_list() 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

Expensive

Reaches an outbound HTTP request via wp_remote_get().

Scaling

Scales with input

The body loops, so the work grows with what you pass in.

Instructions

156–208

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 230.

Plugin surface

None

Nothing here hands control to plugin code.

Called by

3

3 places in core call this, so the cost is paid more often than your own code shows.

What it touches

• transienttransientget_site_transient()called directly
• hookthird-party callbacksapply_filters()one call below get_theme_feature_list()
• cacheobject cachewp_cache_get()one call below get_theme_feature_list()
• optionnetwork optionget_site_option()one call below get_theme_feature_list()
• httpoutbound HTTP requestwp_remote_get()one call below get_theme_feature_list()

Further down the call graph this can also reach query and serialize. Those are 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_theme_feature_list() can have, taken from its control-flow graph on PHP 8.5.

Uses · 6

• __()Retrieves the translation of $text.
• current_user_can()Returns whether the current user has the specified capability.
• get_site_transient()Retrieves the value of a site transient.
• set_site_transient()Sets/updates the value of a site transient.
• themes_api()Retrieves theme installer pages from the WordPress.org Themes API.
• is_wp_error()Checks whether the given variable is a WordPress Error.

Used by · 3

• WP_Customize_Themes_Section::filter_drawer_content_template()Renders the filter drawer portion of a themes section as a JS template.
• WP_Theme::translate_header()Translates a theme header.
• install_themes_dashboard()Displays tags filter for themes.

Source code

View on Trac ↗View on GitHub ↗

314function get_theme_feature_list( $api = true ) {315	// Hard-coded list is used if API is not accessible.316	$features = array(317 318		__( 'Subject' )  => array(319			'blog'           => __( 'Blog' ),320			'e-commerce'     => __( 'E-Commerce' ),321			'education'      => __( 'Education' ),322			'entertainment'  => __( 'Entertainment' ),323			'food-and-drink' => __( 'Food & Drink' ),324			'holiday'        => __( 'Holiday' ),325			'news'           => __( 'News' ),326			'photography'    => __( 'Photography' ),327			'portfolio'      => __( 'Portfolio' ),328		),329 330		__( 'Features' ) => array(331			'accessibility-ready'   => __( 'Accessibility Ready' ),332			'block-patterns'        => __( 'Block Editor Patterns' ),333			'block-styles'          => __( 'Block Editor Styles' ),334			'custom-background'     => __( 'Custom Background' ),335			'custom-colors'         => __( 'Custom Colors' ),336			'custom-header'         => __( 'Custom Header' ),337			'custom-logo'           => __( 'Custom Logo' ),338			'editor-style'          => __( 'Editor Style' ),339			'featured-image-header' => __( 'Featured Image Header' ),340			'featured-images'       => __( 'Featured Images' ),341			'footer-widgets'        => __( 'Footer Widgets' ),342			'full-site-editing'     => __( 'Site Editor' ),343			'full-width-template'   => __( 'Full Width Template' ),344			'post-formats'          => __( 'Post Formats' ),345			'sticky-post'           => __( 'Sticky Post' ),346			'style-variations'      => __( 'Style Variations' ),347			'template-editing'      => __( 'Template Editing' ),348			'theme-options'         => __( 'Theme Options' ),349		),350 351		__( 'Layout' )   => array(352			'grid-layout'   => __( 'Grid Layout' ),353			'one-column'    => __( 'One Column' ),354			'two-columns'   => __( 'Two Columns' ),355			'three-columns' => __( 'Three Columns' ),356			'four-columns'  => __( 'Four Columns' ),357			'left-sidebar'  => __( 'Left Sidebar' ),358			'right-sidebar' => __( 'Right Sidebar' ),359			'wide-blocks'   => __( 'Wide Blocks' ),360		),361 362	);363 364	if ( ! $api || ! current_user_can( 'install_themes' ) ) {365		return $features;366	}367 368	$feature_list = get_site_transient( 'wporg_theme_feature_list' );369	if ( ! $feature_list ) {370		set_site_transient( 'wporg_theme_feature_list', array(), 3 * HOUR_IN_SECONDS );371	}372 373	if ( ! $feature_list ) {374		$feature_list = themes_api( 'feature_list', array() );375		if ( is_wp_error( $feature_list ) ) {376			return $features;377		}378	}379 380	if ( ! $feature_list ) {381		return $features;382	}383 384	set_site_transient( 'wporg_theme_feature_list', $feature_list, 3 * HOUR_IN_SECONDS );385 386	$category_translations = array(387		'Layout'   => __( 'Layout' ),388		'Features' => __( 'Features' ),389		'Subject'  => __( 'Subject' ),390	);391 392	$wporg_features = array();393

Changelog

Introduced in 3.1.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 7.0.4 tag, from src/wp-admin/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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