diff --git a/wp-includes/class-wp-embed.php b/wp-includes/class-wp-embed.php
index 9a3471df90..1bf0907ae3 100644
--- a/wp-includes/class-wp-embed.php
+++ b/wp-includes/class-wp-embed.php
@@ -374,7 +374,7 @@ class WP_Embed {
 		 *
 		 * @since 2.9.0
 		 *
-		 * @param array $post_types Array of post types to cache oEmbed results for. Defaults to post types with `show_ui` set to true.
+		 * @param string[] $post_types Array of post type names to cache oEmbed results for. Defaults to post types with `show_ui` set to true.
 		 */
 		if ( empty( $post->ID ) || ! in_array( $post->post_type, apply_filters( 'embed_cache_oembed_types', $post_types ) ) ) {
 			return;
diff --git a/wp-includes/class-wp-http-ixr-client.php b/wp-includes/class-wp-http-ixr-client.php
index 6b803e5f69..d05f864570 100644
--- a/wp-includes/class-wp-http-ixr-client.php
+++ b/wp-includes/class-wp-http-ixr-client.php
@@ -72,7 +72,7 @@ class WP_HTTP_IXR_Client extends IXR_Client {
 		 *
 		 * @since 4.4.0
 		 *
-		 * @param array $headers Array of headers to be sent.
+		 * @param string[] $headers Associative array of headers to be sent.
 		 */
 		$args['headers'] = apply_filters( 'wp_http_ixr_client_headers', $args['headers'] );
 
diff --git a/wp-includes/class-wp-network-query.php b/wp-includes/class-wp-network-query.php
index a11d6a6c6a..982009b3c3 100644
--- a/wp-includes/class-wp-network-query.php
+++ b/wp-includes/class-wp-network-query.php
@@ -259,7 +259,7 @@ class WP_Network_Query {
 		 *
 		 * @since 4.6.0
 		 *
-		 * @param array            $_networks An array of WP_Network objects.
+		 * @param WP_Network[]     $_networks An array of WP_Network objects.
 		 * @param WP_Network_Query $this      Current instance of WP_Network_Query (passed by reference).
 		 */
 		$_networks = apply_filters_ref_array( 'the_networks', array( $_networks, &$this ) );
@@ -399,7 +399,7 @@ class WP_Network_Query {
 		 *
 		 * @since 4.6.0
 		 *
-		 * @param array            $pieces A compacted array of network query clauses.
+		 * @param string[]         $pieces An associative array of network query clauses.
 		 * @param WP_Network_Query $this   Current instance of WP_Network_Query (passed by reference).
 		 */
 		$clauses = apply_filters_ref_array( 'networks_clauses', array( compact( $pieces ), &$this ) );
@@ -478,8 +478,8 @@ class WP_Network_Query {
 	 *
 	 * @global wpdb  $wpdb WordPress database abstraction object.
 	 *
-	 * @param string $string  Search string.
-	 * @param array  $columns Columns to search.
+	 * @param string   $string  Search string.
+	 * @param string[] $columns Array of columns to search.
 	 *
 	 * @return string Search SQL.
 	 */
diff --git a/wp-includes/class-wp-network.php b/wp-includes/class-wp-network.php
index 89026c7ebf..4926c0d8b5 100644
--- a/wp-includes/class-wp-network.php
+++ b/wp-includes/class-wp-network.php
@@ -403,12 +403,12 @@ class WP_Network {
 		 *
 		 * @since 3.9.0
 		 *
-		 * @param null|bool|object $network  Network value to return by path.
-		 * @param string           $domain   The requested domain.
-		 * @param string           $path     The requested path, in full.
-		 * @param int|null         $segments The suggested number of paths to consult.
-		 *                                   Default null, meaning the entire path was to be consulted.
-		 * @param array            $paths    The paths to search for, based on $path and $segments.
+		 * @param null|bool|WP_Network $network  Network value to return by path.
+		 * @param string               $domain   The requested domain.
+		 * @param string               $path     The requested path, in full.
+		 * @param int|null             $segments The suggested number of paths to consult.
+		 *                                       Default null, meaning the entire path was to be consulted.
+		 * @param string[]             $paths    Array of paths to search for, based on `$path` and `$segments`.
 		 */
 		$pre = apply_filters( 'pre_get_network_by_path', null, $domain, $path, $segments, $paths );
 		if ( null !== $pre ) {
diff --git a/wp-includes/class-wp-query.php b/wp-includes/class-wp-query.php
index 746399f7fd..f8ead26246 100644
--- a/wp-includes/class-wp-query.php
+++ b/wp-includes/class-wp-query.php
@@ -1379,7 +1379,7 @@ class WP_Query {
 	 *
 	 * @since 3.7.0
 	 *
-	 * @param array $terms Terms to check.
+	 * @param string[] $terms Array of terms to check.
 	 * @return array Terms that are not stopwords.
 	 */
 	protected function parse_search_terms( $terms ) {
@@ -1447,7 +1447,7 @@ class WP_Query {
 		 *
 		 * @since 3.7.0
 		 *
-		 * @param array $stopwords Stopwords.
+		 * @param string[] $stopwords Array of stopwords.
 		 */
 		$this->stopwords = apply_filters( 'wp_search_stopwords', $stopwords );
 		return $this->stopwords;
@@ -2694,7 +2694,7 @@ class WP_Query {
 			 *
 			 * @since 3.1.0
 			 *
-			 * @param array    $clauses The list of clauses for the query.
+			 * @param string[] $clauses Associative array of the clauses for the query.
 			 * @param WP_Query $this    The WP_Query instance (passed by reference).
 			 */
 			$clauses = (array) apply_filters_ref_array( 'posts_clauses', array( compact( $pieces ), &$this ) );
@@ -2818,7 +2818,7 @@ class WP_Query {
 			 *
 			 * @since 3.1.0
 			 *
-			 * @param array    $pieces The pieces of the query.
+			 * @param string[] $pieces Associative array of the pieces of the query.
 			 * @param WP_Query $this   The WP_Query instance (passed by reference).
 			 */
 			$clauses = (array) apply_filters_ref_array( 'posts_clauses_request', array( compact( $pieces ), &$this ) );
@@ -2965,8 +2965,8 @@ class WP_Query {
 			 *
 			 * @since 2.3.0
 			 *
-			 * @param array    $posts The post results array.
-			 * @param WP_Query $this The WP_Query instance (passed by reference).
+			 * @param WP_Post[] $posts Array of post objects.
+			 * @param WP_Query  $this  The WP_Query instance (passed by reference).
 			 */
 			$this->posts = apply_filters_ref_array( 'posts_results', array( $this->posts, &$this ) );
 		}
@@ -3102,8 +3102,8 @@ class WP_Query {
 			 *
 			 * @since 1.5.0
 			 *
-			 * @param array    $posts The array of retrieved posts.
-			 * @param WP_Query $this The WP_Query instance (passed by reference).
+			 * @param WP_Post[] $posts Array of post objects.
+			 * @param WP_Query  $this The WP_Query instance (passed by reference).
 			 */
 			$this->posts = apply_filters_ref_array( 'the_posts', array( $this->posts, &$this ) );
 		}
@@ -4177,9 +4177,8 @@ class WP_Query {
 		 *
 		 * @since 4.4.0
 		 *
-		 * @param array   $pages Array of "pages" derived from the post content.
-		 *                       of `<!-- nextpage -->` tags..
-		 * @param WP_Post $post  Current post object.
+		 * @param string[] $pages Array of "pages" from the post content split by `<!-- nextpage -->` tags.
+		 * @param WP_Post  $post  Current post object.
 		 */
 		$pages = apply_filters( 'content_pagination', $pages, $post );
 
diff --git a/wp-includes/class-wp-role.php b/wp-includes/class-wp-role.php
index 576eb23a7a..fa8c9d03c6 100644
--- a/wp-includes/class-wp-role.php
+++ b/wp-includes/class-wp-role.php
@@ -94,7 +94,7 @@ class WP_Role {
 		 *
 		 * @since 2.0.0
 		 *
-		 * @param array  $capabilities Array of role capabilities.
+		 * @param bool[] $capabilities Associative array of capabilities for the role.
 		 * @param string $cap          Capability name.
 		 * @param string $name         Role name.
 		 */
diff --git a/wp-includes/class-wp-site-query.php b/wp-includes/class-wp-site-query.php
index ad29aa096f..344b27ff08 100644
--- a/wp-includes/class-wp-site-query.php
+++ b/wp-includes/class-wp-site-query.php
@@ -307,7 +307,7 @@ class WP_Site_Query {
 		 *
 		 * @since 4.6.0
 		 *
-		 * @param array         $_sites An array of WP_Site objects.
+		 * @param WP_Site[]     $_sites An array of WP_Site objects.
 		 * @param WP_Site_Query $this   Current instance of WP_Site_Query (passed by reference).
 		 */
 		$_sites = apply_filters_ref_array( 'the_sites', array( $_sites, &$this ) );
@@ -509,7 +509,7 @@ class WP_Site_Query {
 			 *
 			 * @since 4.6.0
 			 *
-			 * @param array         $search_columns Array of column names to be searched.
+			 * @param string[]      $search_columns Array of column names to be searched.
 			 * @param string        $search         Text being searched.
 			 * @param WP_Site_Query $this           The current WP_Site_Query instance.
 			 */
@@ -535,7 +535,7 @@ class WP_Site_Query {
 		 *
 		 * @since 4.6.0
 		 *
-		 * @param array         $pieces A compacted array of site query clauses.
+		 * @param string[]      $pieces An associative array of site query clauses.
 		 * @param WP_Site_Query $this   Current instance of WP_Site_Query (passed by reference).
 		 */
 		$clauses = apply_filters_ref_array( 'sites_clauses', array( compact( $pieces ), &$this ) );
@@ -614,8 +614,8 @@ class WP_Site_Query {
 	 *
 	 * @global wpdb  $wpdb WordPress database abstraction object.
 	 *
-	 * @param string $string  Search string.
-	 * @param array  $columns Columns to search.
+	 * @param string   $string  Search string.
+	 * @param string[] $columns Array of columns to search.
 	 * @return string Search SQL.
 	 */
 	protected function get_search_sql( $string, $columns ) {
diff --git a/wp-includes/class-wp-taxonomy.php b/wp-includes/class-wp-taxonomy.php
index ef6f1a0908..94353d84e9 100644
--- a/wp-includes/class-wp-taxonomy.php
+++ b/wp-includes/class-wp-taxonomy.php
@@ -246,9 +246,9 @@ final class WP_Taxonomy {
 		 *
 		 * @since 4.4.0
 		 *
-		 * @param array  $args        Array of arguments for registering a taxonomy.
-		 * @param string $taxonomy    Taxonomy key.
-		 * @param array  $object_type Array of names of object types for the taxonomy.
+		 * @param array    $args        Array of arguments for registering a taxonomy.
+		 * @param string   $taxonomy    Taxonomy key.
+		 * @param string[] $object_type Array of names of object types for the taxonomy.
 		 */
 		$args = apply_filters( 'register_taxonomy_args', $args, $this->name, (array) $object_type );
 
diff --git a/wp-includes/class-wp-term-query.php b/wp-includes/class-wp-term-query.php
index 7bd537cef4..b7c3b42a2b 100644
--- a/wp-includes/class-wp-term-query.php
+++ b/wp-includes/class-wp-term-query.php
@@ -238,8 +238,8 @@ class WP_Term_Query {
 		 *
 		 * @since 4.4.0
 		 *
-		 * @param array $defaults   An array of default get_terms() arguments.
-		 * @param array $taxonomies An array of taxonomies.
+		 * @param array    $defaults   An array of default get_terms() arguments.
+		 * @param string[] $taxonomies An array of taxonomy names.
 		 */
 		$this->query_var_defaults = apply_filters( 'get_terms_defaults', $this->query_var_defaults, $taxonomies );
 
@@ -351,8 +351,8 @@ class WP_Term_Query {
 		 *
 		 * @since 3.1.0
 		 *
-		 * @param array $args       An array of get_terms() arguments.
-		 * @param array $taxonomies An array of taxonomies.
+		 * @param array    $args       An array of get_terms() arguments.
+		 * @param string[] $taxonomies An array of taxonomy names.
 		 */
 		$args = apply_filters( 'get_terms_args', $args, $taxonomies );
 
@@ -463,9 +463,9 @@ class WP_Term_Query {
 		 *
 		 * @since 2.3.0
 		 *
-		 * @param string $exclusions `NOT IN` clause of the terms query.
-		 * @param array  $args       An array of terms query arguments.
-		 * @param array  $taxonomies An array of taxonomies.
+		 * @param string   $exclusions `NOT IN` clause of the terms query.
+		 * @param array    $args       An array of terms query arguments.
+		 * @param string[] $taxonomies An array of taxonomy names.
 		 */
 		$exclusions = apply_filters( 'list_terms_exclusions', $exclusions, $args, $taxonomies );
 
@@ -627,9 +627,9 @@ class WP_Term_Query {
 		 *
 		 * @since 2.8.0
 		 *
-		 * @param array $selects    An array of fields to select for the terms query.
-		 * @param array $args       An array of term query arguments.
-		 * @param array $taxonomies An array of taxonomies.
+		 * @param string[] $selects    An array of fields to select for the terms query.
+		 * @param array    $args       An array of term query arguments.
+		 * @param string[] $taxonomies An array of taxonomy names.
 		 */
 		$fields = implode( ', ', apply_filters( 'get_terms_fields', $selects, $args, $taxonomies ) );
 
@@ -646,9 +646,9 @@ class WP_Term_Query {
 		 *
 		 * @since 3.1.0
 		 *
-		 * @param array $pieces     Terms query SQL clauses.
-		 * @param array $taxonomies An array of taxonomies.
-		 * @param array $args       An array of terms query arguments.
+		 * @param string[] $pieces     Array of query SQL clauses.
+		 * @param string[] $taxonomies An array of taxonomy names.
+		 * @param array    $args       An array of term query arguments.
 		 */
 		$clauses = apply_filters( 'terms_clauses', compact( 'fields', 'join', 'where', 'distinct', 'orderby', 'order', 'limits' ), $taxonomies, $args );
 
@@ -859,9 +859,9 @@ class WP_Term_Query {
 		 *
 		 * @since 2.8.0
 		 *
-		 * @param string $orderby    `ORDERBY` clause of the terms query.
-		 * @param array  $args       An array of terms query arguments.
-		 * @param array  $taxonomies An array of taxonomies.
+		 * @param string   $orderby    `ORDERBY` clause of the terms query.
+		 * @param array    $args       An array of term query arguments.
+		 * @param string[] $taxonomies An array of taxonomy names.
 		 */
 		$orderby = apply_filters( 'get_terms_orderby', $orderby, $this->query_vars, $this->query_vars['taxonomy'] );
 
diff --git a/wp-includes/class-wp-theme.php b/wp-includes/class-wp-theme.php
index ae0e59bbdd..88e22758cf 100644
--- a/wp-includes/class-wp-theme.php
+++ b/wp-includes/class-wp-theme.php
@@ -1191,7 +1191,7 @@ final class WP_Theme implements ArrayAccess {
 		 * @since 4.4.0 Converted to allow complete control over the `$page_templates` array.
 		 * @since 4.7.0 Added the `$post_type` parameter.
 		 *
-		 * @param array        $post_templates Array of page templates. Keys are filenames,
+		 * @param string[]     $post_templates Array of page templates. Keys are filenames,
 		 *                                     values are translated names.
 		 * @param WP_Theme     $this           The theme object.
 		 * @param WP_Post|null $post           The post being edited, provided for context, or null.
@@ -1239,7 +1239,7 @@ final class WP_Theme implements ArrayAccess {
 		 *
 		 * @since 4.7.4
 		 *
-		 * @param array $exclusions Array of excluded directories and files.
+		 * @param string[] $exclusions Array of excluded directories and files.
 		 */
 		$exclusions = (array) apply_filters( 'theme_scandir_exclusions', array( 'CVS', 'node_modules', 'vendor', 'bower_components' ) );
 
@@ -1356,7 +1356,7 @@ final class WP_Theme implements ArrayAccess {
 	 * @since 3.4.0
 	 *
 	 * @param int $blog_id Optional. ID of the site. Defaults to the current site.
-	 * @return array Array of stylesheet names.
+	 * @return string[] Array of stylesheet names.
 	 */
 	public static function get_allowed( $blog_id = null ) {
 		/**
@@ -1367,8 +1367,8 @@ final class WP_Theme implements ArrayAccess {
 		 *
 		 * @since 4.5.0
 		 *
-		 * @param array $allowed_themes An array of theme stylesheet names.
-		 * @param int   $blog_id        ID of the site.
+		 * @param string[] $allowed_themes An array of theme stylesheet names.
+		 * @param int      $blog_id        ID of the site.
 		 */
 		$network = (array) apply_filters( 'network_allowed_themes', self::get_allowed_on_network(), $blog_id );
 		return $network + self::get_allowed_on_site( $blog_id );
@@ -1381,7 +1381,7 @@ final class WP_Theme implements ArrayAccess {
 	 *
 	 * @staticvar array $allowed_themes
 	 *
-	 * @return array Array of stylesheet names.
+	 * @return string[] Array of stylesheet names.
 	 */
 	public static function get_allowed_on_network() {
 		static $allowed_themes;
@@ -1394,7 +1394,7 @@ final class WP_Theme implements ArrayAccess {
 		 *
 		 * @since MU (3.0.0)
 		 *
-		 * @param array $allowed_themes An array of theme stylesheet names.
+		 * @param string[] $allowed_themes An array of theme stylesheet names.
 		 */
 		$allowed_themes = apply_filters( 'allowed_themes', $allowed_themes );
 
@@ -1409,7 +1409,7 @@ final class WP_Theme implements ArrayAccess {
 	 * @staticvar array $allowed_themes
 	 *
 	 * @param int $blog_id Optional. ID of the site. Defaults to the current site.
-	 * @return array Array of stylesheet names.
+	 * @return string[] Array of stylesheet names.
 	 */
 	public static function get_allowed_on_site( $blog_id = null ) {
 		static $allowed_themes = array();
@@ -1424,8 +1424,8 @@ final class WP_Theme implements ArrayAccess {
 			 *
 			 * @since 4.5.0
 			 *
-			 * @param array $allowed_themes An array of theme stylesheet names.
-			 * @param int   $blog_id        ID of the site. Defaults to current site.
+			 * @param string[] $allowed_themes An array of theme stylesheet names.
+			 * @param int      $blog_id        ID of the site. Defaults to current site.
 			 */
 			return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id );
 		}
@@ -1486,7 +1486,7 @@ final class WP_Theme implements ArrayAccess {
 	 *
 	 * @since 4.6.0
 	 *
-	 * @param string|array $stylesheets Stylesheet name or array of stylesheet names.
+	 * @param string|string[] $stylesheets Stylesheet name or array of stylesheet names.
 	 */
 	public static function network_enable_theme( $stylesheets ) {
 		if ( ! is_multisite() ) {
@@ -1510,7 +1510,7 @@ final class WP_Theme implements ArrayAccess {
 	 *
 	 * @since 4.6.0
 	 *
-	 * @param string|array $stylesheets Stylesheet name or array of stylesheet names.
+	 * @param string|string[] $stylesheets Stylesheet name or array of stylesheet names.
 	 */
 	public static function network_disable_theme( $stylesheets ) {
 		if ( ! is_multisite() ) {
diff --git a/wp-includes/class-wp-user-query.php b/wp-includes/class-wp-user-query.php
index d7ebfec60f..575eab90c9 100644
--- a/wp-includes/class-wp-user-query.php
+++ b/wp-includes/class-wp-user-query.php
@@ -541,7 +541,7 @@ class WP_User_Query {
 			 *
 			 * @since 3.6.0
 			 *
-			 * @param array         $search_columns Array of column names to be searched.
+			 * @param string[]      $search_columns Array of column names to be searched.
 			 * @param string        $search         Text being searched.
 			 * @param WP_User_Query $this           The current WP_User_Query instance.
 			 */
diff --git a/wp-includes/class-wp-user.php b/wp-includes/class-wp-user.php
index ec3761f4b3..c43d5ee2a8 100644
--- a/wp-includes/class-wp-user.php
+++ b/wp-includes/class-wp-user.php
@@ -610,9 +610,9 @@ class WP_User {
 		 * @since 2.9.0
 		 * @since 3.6.0 Added $old_roles to include an array of the user's previous roles.
 		 *
-		 * @param int    $user_id   The user ID.
-		 * @param string $role      The new role.
-		 * @param array  $old_roles An array of the user's previous roles.
+		 * @param int      $user_id   The user ID.
+		 * @param string   $role      The new role.
+		 * @param string[] $old_roles An array of the user's previous roles.
 		 */
 		do_action( 'set_user_role', $this->ID, $role, $old_roles );
 	}
@@ -750,10 +750,10 @@ class WP_User {
 		 * @since 2.0.0
 		 * @since 3.7.0 Added the user object.
 		 *
-		 * @param array   $allcaps An array of all the user's capabilities.
-		 * @param array   $caps    Actual capabilities for meta capability.
-		 * @param array   $args    Optional parameters passed to has_cap(), typically object ID.
-		 * @param WP_User $user    The user object.
+		 * @param bool[]   $allcaps An array of all the user's capabilities.
+		 * @param string[] $caps    Actual capabilities for meta capability.
+		 * @param array    $args    Optional parameters passed to has_cap(), typically object ID.
+		 * @param WP_User  $user    The user object.
 		 */
 		$capabilities = apply_filters( 'user_has_cap', $this->allcaps, $caps, $args, $this );
 
diff --git a/wp-includes/class-wp.php b/wp-includes/class-wp.php
index 47ed0a04b4..dfc2f9717b 100644
--- a/wp-includes/class-wp.php
+++ b/wp-includes/class-wp.php
@@ -12,7 +12,7 @@ class WP {
 	 * Long list of public query variables.
 	 *
 	 * @since 2.0.0
-	 * @var array
+	 * @var string[]
 	 */
 	public $public_query_vars = array( 'm', 'p', 'posts', 'w', 'cat', 'withcomments', 'withoutcomments', 's', 'search', 'exact', 'sentence', 'calendar', 'page', 'paged', 'more', 'tb', 'pb', 'author', 'order', 'orderby', 'year', 'monthnum', 'day', 'hour', 'minute', 'second', 'name', 'category_name', 'tag', 'feed', 'author_name', 'static', 'pagename', 'page_id', 'error', 'attachment', 'attachment_id', 'subpost', 'subpost_id', 'preview', 'robots', 'taxonomy', 'term', 'cpage', 'post_type', 'embed' );
 
@@ -22,7 +22,7 @@ class WP {
 	 * Long list of private query variables.
 	 *
 	 * @since 2.0.0
-	 * @var array
+	 * @var string[]
 	 */
 	public $private_query_vars = array( 'offset', 'posts_per_page', 'posts_per_archive_page', 'showposts', 'nopaging', 'post_type', 'post_status', 'category__in', 'category__not_in', 'category__and', 'tag__in', 'tag__not_in', 'tag__and', 'tag_slug__in', 'tag_slug__and', 'tag_id', 'post_mime_type', 'perm', 'comments_per_page', 'post__in', 'post__not_in', 'post_parent', 'post_parent__in', 'post_parent__not_in', 'title', 'fields' );
 
@@ -282,7 +282,7 @@ class WP {
 		 *
 		 * @since 1.5.0
 		 *
-		 * @param array $public_query_vars The array of whitelisted query variables.
+		 * @param string[] $public_query_vars The array of whitelisted query variable names.
 		 */
 		$this->public_query_vars = apply_filters( 'query_vars', $this->public_query_vars );
 
@@ -477,8 +477,8 @@ class WP {
 		 *
 		 * @since 2.8.0
 		 *
-		 * @param array $headers The list of headers to be sent.
-		 * @param WP    $this    Current WordPress environment instance.
+		 * @param string[] $headers Associative array of headers to be sent.
+		 * @param WP       $this    Current WordPress environment instance.
 		 */
 		$headers = apply_filters( 'wp_headers', $headers, $this );
 
diff --git a/wp-includes/class.wp-dependencies.php b/wp-includes/class.wp-dependencies.php
index 716fa0c230..b5683cb95e 100644
--- a/wp-includes/class.wp-dependencies.php
+++ b/wp-includes/class.wp-dependencies.php
@@ -203,7 +203,7 @@ class WP_Dependencies {
 	 *
 	 * @param string           $handle Name of the item. Should be unique.
 	 * @param string           $src    Full URL of the item, or path of the item relative to the WordPress root directory.
-	 * @param array            $deps   Optional. An array of registered item handles this item depends on. Default empty array.
+	 * @param string[]         $deps   Optional. An array of registered item handles this item depends on. Default empty array.
 	 * @param string|bool|null $ver    Optional. String specifying item version number, if it has one, which is added to the URL
 	 *                                 as a query string for cache busting purposes. If version is set to false, a version
 	 *                                 number is automatically added equal to current installed WordPress version.
@@ -329,8 +329,8 @@ class WP_Dependencies {
 	 *
 	 * @since 4.0.0
 	 *
-	 * @param array  $queue  An array of queued _WP_Dependency handle objects.
-	 * @param string $handle Name of the item. Should be unique.
+	 * @param string[] $queue  An array of queued _WP_Dependency handles.
+	 * @param string   $handle Name of the item. Should be unique.
 	 * @return bool Whether the handle is found after recursively searching the dependency tree.
 	 */
 	protected function recurse_deps( $queue, $handle ) {
diff --git a/wp-includes/class.wp-scripts.php b/wp-includes/class.wp-scripts.php
index 42422d3db4..cfb72280fd 100644
--- a/wp-includes/class.wp-scripts.php
+++ b/wp-includes/class.wp-scripts.php
@@ -496,7 +496,7 @@ class WP_Scripts extends WP_Dependencies {
 			 *
 			 * @since 2.3.0
 			 *
-			 * @param array $to_do An array of script dependencies.
+			 * @param string[] $to_do An array of script dependency handles.
 			 */
 			$this->to_do = apply_filters( 'print_scripts_array', $this->to_do );
 		}
diff --git a/wp-includes/class.wp-styles.php b/wp-includes/class.wp-styles.php
index fed69962bc..aadf7669af 100644
--- a/wp-includes/class.wp-styles.php
+++ b/wp-includes/class.wp-styles.php
@@ -306,7 +306,7 @@ class WP_Styles extends WP_Dependencies {
 			 *
 			 * @since 2.6.0
 			 *
-			 * @param array $to_do The list of enqueued styles about to be processed.
+			 * @param string[] $to_do The list of enqueued style handles about to be processed.
 			 */
 			$this->to_do = apply_filters( 'print_styles_array', $this->to_do );
 		}
diff --git a/wp-includes/comment-template.php b/wp-includes/comment-template.php
index d2772f23fb..bcda28f87c 100644
--- a/wp-includes/comment-template.php
+++ b/wp-includes/comment-template.php
@@ -523,7 +523,7 @@ function get_comment_class( $class = '', $comment_id = null, $post_id = null ) {
 	 *
 	 * @since 2.7.0
 	 *
-	 * @param array       $classes    An array of comment classes.
+	 * @param string[]    $classes    An array of comment classes.
 	 * @param string      $class      A comma-separated list of additional classes added to the list.
 	 * @param int         $comment_id The comment id.
 	 * @param WP_Comment  $comment    The comment object.
@@ -2280,7 +2280,7 @@ function comment_form( $args = array(), $post_id = null ) {
 	 *
 	 * @since 3.0.0
 	 *
-	 * @param array $fields The default comment fields.
+	 * @param string[] $fields Array of the default comment fields.
 	 */
 	$fields   = apply_filters( 'comment_form_default_fields', $fields );
 	$defaults = array(
diff --git a/wp-includes/comment.php b/wp-includes/comment.php
index 1ea7f239ba..1fabe53b0a 100644
--- a/wp-includes/comment.php
+++ b/wp-includes/comment.php
@@ -517,7 +517,7 @@ function update_comment_meta( $comment_id, $meta_key, $meta_value, $prev_value =
  *
  * @since 4.5.0
  *
- * @param array $comments Array of comment objects.
+ * @param WP_Comment[] $comments Array of comment objects.
  */
 function wp_queue_comments_for_comment_meta_lazyload( $comments ) {
 	// Don't use `wp_list_pluck()` to avoid by-reference manipulation.
@@ -918,8 +918,8 @@ function wp_check_comment_flood( $is_flood, $ip, $email, $date, $avoid_die = fal
  *
  * @since 2.7.0
  *
- * @param array $comments Array of comments
- * @return array Array of comments keyed by comment_type.
+ * @param WP_Comment[] $comments Array of comments
+ * @return WP_Comment[] Array of comments keyed by comment_type.
  */
 function separate_comments( &$comments ) {
 	$comments_by_type = array(
@@ -952,9 +952,9 @@ function separate_comments( &$comments ) {
  *
  * @global WP_Query $wp_query
  *
- * @param array $comments Optional array of WP_Comment objects. Defaults to $wp_query->comments
- * @param int   $per_page Optional comments per page.
- * @param bool  $threaded Optional control over flat or threaded comments.
+ * @param WP_Comment[] $comments Optional. Array of WP_Comment objects. Defaults to $wp_query->comments.
+ * @param int          $per_page Optional. Comments per page.
+ * @param bool         $threaded Optional. Control over flat or threaded comments.
  * @return int Number of comment pages.
  */
 function get_comment_pages_count( $comments = null, $per_page = null, $threaded = null ) {
@@ -2740,9 +2740,9 @@ function pingback( $content, $post_id ) {
 	 *
 	 * @since 2.0.0
 	 *
-	 * @param array $post_links An array of post links to be checked (passed by reference).
-	 * @param array $pung       Whether a link has already been pinged (passed by reference).
-	 * @param int   $post_ID    The post ID.
+	 * @param string[] $post_links Array of link URLs to be checked (passed by reference).
+	 * @param string[] $pung       Array of link URLs already pinged (passed by reference).
+	 * @param int      $post_ID    The post ID.
 	 */
 	do_action_ref_array( 'pre_ping', array( &$post_links, &$pung, $post->ID ) );
 
@@ -2932,8 +2932,8 @@ function clean_comment_cache( $ids ) {
  * @since 2.3.0
  * @since 4.4.0 Introduced the `$update_meta_cache` parameter.
  *
- * @param array $comments          Array of comment row objects
- * @param bool  $update_meta_cache Whether to update commentmeta cache. Default true.
+ * @param WP_Comment[] $comments          Array of comment objects
+ * @param bool         $update_meta_cache Whether to update commentmeta cache. Default true.
  */
 function update_comment_cache( $comments, $update_meta_cache = true ) {
 	foreach ( (array) $comments as $comment ) {
@@ -2959,7 +2959,7 @@ function update_comment_cache( $comments, $update_meta_cache = true ) {
  * @see update_comment_cache()
  * @global wpdb $wpdb WordPress database abstraction object.
  *
- * @param array $comment_ids       Array of comment IDs.
+ * @param int[] $comment_ids       Array of comment IDs.
  * @param bool  $update_meta_cache Optional. Whether to update the meta cache. Default true.
  */
 function _prime_comment_caches( $comment_ids, $update_meta_cache = true ) {
@@ -2997,7 +2997,7 @@ function _close_comments_for_old_posts( $posts, $query ) {
 	 *
 	 * @since 3.2.0
 	 *
-	 * @param array $post_types An array of registered post types. Default array with 'post'.
+	 * @param string[] $post_types An array of post type names.
 	 */
 	$post_types = apply_filters( 'close_comments_for_post_types', array( 'post' ) );
 	if ( ! in_array( $posts[0]->post_type, $post_types ) ) {
diff --git a/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php b/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php
index 1049acf40f..b5ce2e3cf4 100644
--- a/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php
+++ b/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php
@@ -468,10 +468,10 @@ class WP_Customize_Nav_Menu_Item_Setting extends WP_Customize_Setting {
 	 *
 	 * @see wp_get_nav_menu_items()
 	 *
-	 * @param array  $items An array of menu item post objects.
-	 * @param object $menu  The menu object.
-	 * @param array  $args  An array of arguments used to retrieve menu item objects.
-	 * @return array Array of menu items,
+	 * @param WP_Post[] $items An array of menu item post objects.
+	 * @param WP_Term   $menu  The menu object.
+	 * @param array     $args  An array of arguments used to retrieve menu item objects.
+	 * @return WP_Post[] Array of menu item objects.
 	 */
 	public function filter_wp_get_nav_menu_items( $items, $menu, $args ) {
 		$this_item                = $this->value();
@@ -541,10 +541,10 @@ class WP_Customize_Nav_Menu_Item_Setting extends WP_Customize_Setting {
 	 *
 	 * @see wp_get_nav_menu_items()
 	 *
-	 * @param array  $items An array of menu item post objects.
-	 * @param object $menu  The menu object.
-	 * @param array  $args  An array of arguments used to retrieve menu item objects.
-	 * @return array Array of menu items,
+	 * @param WP_Post[] $items An array of menu item post objects.
+	 * @param WP_Term   $menu  The menu object.
+	 * @param array     $args  An array of arguments used to retrieve menu item objects.
+	 * @return WP_Post[] Array of menu item objects.
 	 */
 	public static function sort_wp_get_nav_menu_items( $items, $menu, $args ) {
 		// @todo We should probably re-apply some constraints imposed by $args.
diff --git a/wp-includes/customize/class-wp-customize-nav-menu-setting.php b/wp-includes/customize/class-wp-customize-nav-menu-setting.php
index 44c99bacfd..6744f92bef 100644
--- a/wp-includes/customize/class-wp-customize-nav-menu-setting.php
+++ b/wp-includes/customize/class-wp-customize-nav-menu-setting.php
@@ -232,9 +232,9 @@ class WP_Customize_Nav_Menu_Setting extends WP_Customize_Setting {
 	 *
 	 * @see wp_get_nav_menus()
 	 *
-	 * @param array $menus An array of menu objects.
-	 * @param array $args  An array of arguments used to retrieve menu objects.
-	 * @return array
+	 * @param WP_Term[] $menus An array of menu objects.
+	 * @param array     $args  An array of arguments used to retrieve menu objects.
+	 * @return WP_Term[] Array of menu objects.
 	 */
 	public function filter_wp_get_nav_menus( $menus, $args ) {
 		if ( get_current_blog_id() !== $this->_previewed_blog_id ) {
diff --git a/wp-includes/customize/class-wp-customize-selective-refresh.php b/wp-includes/customize/class-wp-customize-selective-refresh.php
index 34a1963599..87113486b2 100644
--- a/wp-includes/customize/class-wp-customize-selective-refresh.php
+++ b/wp-includes/customize/class-wp-customize-selective-refresh.php
@@ -218,8 +218,8 @@ final class WP_Customize_Selective_Refresh {
 	 *
 	 * @see WP_Customize_Manager::add_dynamic_settings()
 	 *
-	 * @param array $partial_ids The partial ID to add.
-	 * @return array Added WP_Customize_Partial instances.
+	 * @param string[] $partial_ids Array of the partial IDs to add.
+	 * @return WP_Customize_Partial[] Array of added WP_Customize_Partial instances.
 	 */
 	public function add_dynamic_partials( $partial_ids ) {
 		$new_partials = array();
diff --git a/wp-includes/date.php b/wp-includes/date.php
index ef7cb2e214..e85fe3287d 100644
--- a/wp-includes/date.php
+++ b/wp-includes/date.php
@@ -499,10 +499,10 @@ class WP_Date_Query {
 			 * @since 3.7.0
 			 * @since 4.1.0 Added 'user_registered' to the default recognized columns.
 			 *
-			 * @param array $valid_columns An array of valid date query columns. Defaults
-			 *                             are 'post_date', 'post_date_gmt', 'post_modified',
-			 *                             'post_modified_gmt', 'comment_date', 'comment_date_gmt',
-			 *                             'user_registered'
+			 * @param string[] $valid_columns An array of valid date query columns. Defaults
+			 *                                are 'post_date', 'post_date_gmt', 'post_modified',
+			 *                                'post_modified_gmt', 'comment_date', 'comment_date_gmt',
+			 *                                'user_registered'
 			 */
 			if ( ! in_array( $column, apply_filters( 'date_query_valid_columns', $valid_columns ) ) ) {
 				$column = 'post_date';
diff --git a/wp-includes/embed.php b/wp-includes/embed.php
index 461dced3f1..8bd36f7cc0 100644
--- a/wp-includes/embed.php
+++ b/wp-includes/embed.php
@@ -76,7 +76,7 @@ function wp_embed_defaults( $url = '' ) {
 	 *
 	 * @since 2.9.0
 	 *
-	 * @param array  $size An array of embed width and height values
+	 * @param int[]  $size An array of embed width and height values
 	 *                     in pixels (in that order).
 	 * @param string $url  The URL that should be embedded.
 	 */
diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 6fef09cc42..3f11cce7e0 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -5457,15 +5457,14 @@ function wp_debug_backtrace_summary( $ignore_class = null, $skip_frames = 0, $pr
 }
 
 /**
- * Retrieve ids that are not already present in the cache.
+ * Retrieve IDs that are not already present in the cache.
  *
  * @since 3.4.0
  * @access private
  *
- * @param array  $object_ids ID list.
+ * @param int[]  $object_ids Array of IDs.
  * @param string $cache_key  The cache bucket to check against.
- *
- * @return array List of ids not present in the cache.
+ * @return int[] Array of IDs not present in the cache.
  */
 function _get_non_cached_ids( $object_ids, $cache_key ) {
 	$clean = array();
diff --git a/wp-includes/l10n.php b/wp-includes/l10n.php
index ff6ebbc65c..4aef972490 100644
--- a/wp-includes/l10n.php
+++ b/wp-includes/l10n.php
@@ -549,8 +549,8 @@ function translate_nooped_plural( $nooped_plural, $count, $domain = 'default' )
  *
  * @since 1.5.0
  *
- * @global array $l10n          An array of all currently loaded text domains.
- * @global array $l10n_unloaded An array of all text domains that have been unloaded again.
+ * @global MO[] $l10n          An array of all currently loaded text domains.
+ * @global MO[] $l10n_unloaded An array of all text domains that have been unloaded again.
  *
  * @param string $domain Text domain. Unique identifier for retrieving translated strings.
  * @param string $mofile Path to the .mo file.
@@ -623,8 +623,8 @@ function load_textdomain( $domain, $mofile ) {
  *
  * @since 3.0.0
  *
- * @global array $l10n          An array of all currently loaded text domains.
- * @global array $l10n_unloaded An array of all text domains that have been unloaded again.
+ * @global MO[] $l10n          An array of all currently loaded text domains.
+ * @global MO[] $l10n_unloaded An array of all text domains that have been unloaded again.
  *
  * @param string $domain Text domain. Unique identifier for retrieving translated strings.
  * @return bool Whether textdomain was unloaded.
@@ -856,7 +856,7 @@ function load_child_theme_textdomain( $domain, $path = false ) {
  * @access private
  *
  * @see get_translations_for_domain()
- * @global array $l10n_unloaded An array of all text domains that have been unloaded again.
+ * @global MO[] $l10n_unloaded An array of all text domains that have been unloaded again.
  *
  * @param string $domain Text domain. Unique identifier for retrieving translated strings.
  * @return bool True when the textdomain is successfully loaded, false otherwise.
@@ -964,7 +964,7 @@ function _get_path_to_translation_from_lang_dir( $domain ) {
  *
  * @since 2.8.0
  *
- * @global array $l10n
+ * @global MO[] $l10n
  * @staticvar NOOP_Translations $noop_translations
  *
  * @param string $domain Text domain. Unique identifier for retrieving translated strings.
@@ -989,7 +989,7 @@ function get_translations_for_domain( $domain ) {
  *
  * @since 3.0.0
  *
- * @global array $l10n
+ * @global MO[] $l10n
  *
  * @param string $domain Text domain. Unique identifier for retrieving translated strings.
  * @return bool Whether there are translations.
diff --git a/wp-includes/post.php b/wp-includes/post.php
index 39e189168b..e46f949891 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -1043,7 +1043,7 @@ function get_post_type_object( $post_type ) {
  * @param string       $operator Optional. The logical operation to perform. 'or' means only one
  *                               element from the array needs to match; 'and' means all elements
  *                               must match; 'not' means no elements may match. Default 'and'.
- * @return array A list of post type names or objects.
+ * @return string[]|WP_Post_Type[] An array of post type names or objects.
  */
 function get_post_types( $args = array(), $output = 'names', $operator = 'and' ) {
 	global $wp_post_types;
@@ -4341,7 +4341,7 @@ function get_enclosed( $post_id ) {
  * @since 4.7.0 `$post_id` can be a WP_Post object.
  *
  * @param int|WP_Post $post_id Post ID or object.
- * @return array
+ * @return bool|string[] Array of URLs already pinged for the given post, false if the post is not found.
  */
 function get_pung( $post_id ) {
 	$post = get_post( $post_id );
@@ -4357,7 +4357,7 @@ function get_pung( $post_id ) {
 	 *
 	 * @since 2.0.0
 	 *
-	 * @param array $pung Array of URLs already pinged for the given post.
+	 * @param string[] $pung Array of URLs already pinged for the given post.
 	 */
 	return apply_filters( 'get_pung', $pung );
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 66429141a3..5ff8544594 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-42875';
+$wp_version = '5.0-alpha-42876';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.