WP_Debug_Data::get_wp_parent_theme(): array<string,

Compatibility

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

Return value

array<string,

string|array> The parent theme debug data.

Performance profile

How much work a call to WP_Debug_Data::get_wp_parent_theme() 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

Reads stored settings via get_site_option(), cached per request but not free on a cold cache.

Scaling

Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions

27–169

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 186.

Plugin surface

1 hook

Third-party callbacks on 'theme_auto_update_debug_string' run inside this call, and their cost is not bounded by anything here.

Called by

1

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

What it touches

• transienttransientget_site_transient()called directly
• optionnetwork optionget_site_option()called directly
• hookthird-party callbacksapply_filters()called directly
• cacheobject cachewp_cache_get()one call below WP_Debug_Data::get_wp_parent_theme()

Further down the call graph this can also reach serialize 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 · 18 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost WP_Debug_Data::get_wp_parent_theme() can have, taken from its control-flow graph on PHP 8.5.

Hooks and filters fired · 1

One hook fires while WP_Debug_Data::get_wp_parent_theme() runs, in this order:

1. 1
   apply_filters( theme_auto_update_debug_string )filterline 1347 (+89 into the body)

   Filters the text string of the auto-updates setting for each theme in the Site Health debug data.

Uses · 10

• get_theme_updates()Retrieves themes with updates available.
• get_site_transient()Retrieves the value of a site transient.
• wp_is_auto_update_enabled_for_type()Checks whether auto-updates are enabled.
• get_site_option()Retrieve an option value for the current network based on name of option.
• wp_get_theme()Gets a WP_Theme object for a theme.
• __()Retrieves the translation of $text.
• wp_kses()Filters text content and strips out disallowed HTML.
• get_template_directory()Retrieves template directory path for the active theme.
• wp_is_auto_update_forced_for_item()Checks whether auto-updates are forced for an item.
• apply_filters()Calls the callback functions that have been added to a filter hook.

Used by · 1

• WP_Debug_Data::debug_data()Static function for generating site debug data when required.

Source code

View on Trac ↗View on GitHub ↗

1258	private static function get_wp_parent_theme(): array {1259		$theme_updates = get_theme_updates();1260		$transient     = get_site_transient( 'update_themes' );1261 1262		$auto_updates         = array();1263		$auto_updates_enabled = wp_is_auto_update_enabled_for_type( 'theme' );1264		if ( $auto_updates_enabled ) {1265			$auto_updates = (array) get_site_option( 'auto_update_themes', array() );1266		}1267 1268		$active_theme = wp_get_theme();1269		$parent_theme = $active_theme->parent();1270		$fields       = array();1271 1272		if ( $parent_theme ) {1273			$parent_theme_version       = $parent_theme->version;1274			$parent_theme_version_debug = $parent_theme_version;1275 1276			if ( array_key_exists( $parent_theme->stylesheet, $theme_updates ) ) {1277				$parent_theme_update_new_version = $theme_updates[ $parent_theme->stylesheet ]->update['new_version'];1278 1279				/* translators: %s: Latest theme version number. */1280				$parent_theme_version       .= ' ' . sprintf( __( '(Latest version: %s)' ), $parent_theme_update_new_version );1281				$parent_theme_version_debug .= sprintf( ' (latest version: %s)', $parent_theme_update_new_version );1282			}1283 1284			$parent_theme_author_uri = $parent_theme->display( 'AuthorURI' );1285 1286			$fields = array(1287				'name'           => array(1288					'label' => __( 'Name' ),1289					'value' => sprintf(1290						/* translators: 1: Theme name. 2: Theme slug. */1291						__( '%1$s (%2$s)' ),1292						$parent_theme->name,1293						$parent_theme->stylesheet1294					),1295				),1296				'version'        => array(1297					'label' => __( 'Version' ),1298					'value' => $parent_theme_version,1299					'debug' => $parent_theme_version_debug,1300				),1301				'author'         => array(1302					'label' => __( 'Author' ),1303					'value' => wp_kses( $parent_theme->author, array() ),1304				),1305				'author_website' => array(1306					'label' => __( 'Author website' ),1307					'value' => ( $parent_theme_author_uri ? $parent_theme_author_uri : __( 'Undefined' ) ),1308					'debug' => ( $parent_theme_author_uri ? $parent_theme_author_uri : '(undefined)' ),1309				),1310				'theme_path'     => array(1311					'label' => __( 'Theme directory location' ),1312					'value' => get_template_directory(),1313				),1314			);1315 1316			if ( $auto_updates_enabled ) {1317				if ( isset( $transient->response[ $parent_theme->stylesheet ] ) ) {1318					$item = $transient->response[ $parent_theme->stylesheet ];1319				} elseif ( isset( $transient->no_update[ $parent_theme->stylesheet ] ) ) {1320					$item = $transient->no_update[ $parent_theme->stylesheet ];1321				} else {1322					$item = array(1323						'theme'        => $parent_theme->stylesheet,1324						'new_version'  => $parent_theme->version,1325						'url'          => '',1326						'package'      => '',1327						'requires'     => '',1328						'requires_php' => '',1329					);1330				}1331 1332				$auto_update_forced = wp_is_auto_update_forced_for_item( 'theme', null, (object) $item );1333 1334				if ( ! is_null( $auto_update_forced ) ) {1335					$enabled = $auto_update_forced;1336				} else {1337					$enabled = in_array( $parent_theme->stylesheet, $auto_updates, true );

Changelog

Introduced in 6.7.0. One change between 6.7.7 and 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 7.1.0 tag, from src/wp-admin/includes/class-wp-debug-data.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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