WordPress/wp-includes
Mark Jaquith edfe2ece51 Cache API: Allow external object caches to gracefully degrade to the default object cache.
Rework logic for how external object caches are detected, so that if
an external cache does not define a `wp_cache_init()`, the built-in
object cache will be used.

Object caches can now wrap their entire contents in logic checks. So a
Redis caching backend could make sure that the `Redis` PHP class is
available before defining all the caching functions. And if Redis is
not available, the site doesn't break or throw errors or think it is
using caching when it isn't. This is particularly useful for doing
local development, where you might want to develop on a site without
running Memcache or Redis like you are in production.

* Accounts for multisite, which may re-initialize the object cache
multiple times.
* Accounts for object caches that may include `object-cache.php` during
`advanced-cache.php` (before WP loads it).

Props jtsternberg, markjaquith.
Fixes #22661.


Built from https://develop.svn.wordpress.org/trunk@42723


git-svn-id: http://core.svn.wordpress.org/trunk@42553 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-02-21 14:59:30 +00:00
..
certificates
css Administration: Remove erroneous transition-delay values from CSS files. 2018-02-11 12:55:30 +00:00
customize Customize: Correct "Add Items" button reference in help text shown after creating a new menu. 2018-01-23 12:03:30 +00:00
fonts
ID3 Media: update the getID3 library to version 1.9.14 to avoid fatal errors in PHP7. 2017-07-31 19:50:45 +00:00
images
IXR XML-RPC: Add default values to IXR_Message for PHP 7.2 compatibility to avoid PHP Warnings. 2018-02-06 02:56:32 +00:00
js General: Further improve error messages following [42648]. 2018-02-19 02:13:32 +00:00
pomo Code is Poetry. 2017-11-30 23:11:00 +00:00
random_compat External Libraries: Update Random_Compat from 1.2.1 to 2.0.11. 2017-11-08 11:48:49 +00:00
Requests
rest-api Docs: Add missing code formatting to various @since entries. 2018-02-09 16:55:31 +00:00
SimplePie
Text External Libraries: Remove usage of each() from the Text_Diff_Engine_native class. 2017-10-26 12:52:53 +00:00
theme-compat Code is Poetry. 2017-11-30 23:11:00 +00:00
widgets Docs: Correct erroneous class references in @see tags. 2018-02-01 01:20:30 +00:00
admin-bar.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
atomlib.php
author-template.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
bookmark-template.php Code is Poetry. 2017-11-30 23:11:00 +00:00
bookmark.php Code is Poetry. 2017-11-30 23:11:00 +00:00
cache.php Code is Poetry. 2017-11-30 23:11:00 +00:00
canonical.php Code is Poetry. 2017-11-30 23:11:00 +00:00
capabilities.php Role/Capability: Make install_languages capability check less restrictive. 2018-01-24 22:42:30 +00:00
category-template.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
category.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-feed.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-http.php HTTP API: Add the URL as a paramter to various HTTP related filters. 2018-02-09 18:11:30 +00:00
class-IXR.php
class-json.php
class-oembed.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-phpass.php
class-phpmailer.php
class-pop3.php
class-requests.php
class-simplepie.php
class-smtp.php
class-snoopy.php
class-walker-category-dropdown.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-walker-category.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-walker-comment.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-walker-nav-menu.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-walker-page-dropdown.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-walker-page.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-admin-bar.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-ajax-response.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-comment-query.php Docs: Add missing @return entry for WP_Comment_Query::get_comment_ids(). 2017-12-07 13:47:52 +00:00
class-wp-comment.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-customize-control.php Customize: Avoid extra tabs in a textarea in WP_Customize_Control::render_content(). 2018-02-08 10:59:30 +00:00
class-wp-customize-manager.php General: Further improve error messages following [42648]. 2018-02-19 02:13:32 +00:00
class-wp-customize-nav-menus.php Docs: Correct erroneous class references in @see tags. 2018-02-01 01:20:30 +00:00
class-wp-customize-panel.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-customize-section.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-customize-setting.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-customize-widgets.php Docs: Correct erroneous class references in @see tags. 2018-02-01 01:20:30 +00:00
class-wp-dependency.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-editor.php Docs: Correct erroneous class references in @see tags. 2018-02-01 01:20:30 +00:00
class-wp-embed.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-error.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-feed-cache-transient.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-feed-cache.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-hook.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-http-cookie.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-http-curl.php HTTP API: Add the URL as a paramter to various HTTP related filters. 2018-02-09 18:11:30 +00:00
class-wp-http-encoding.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-http-ixr-client.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-http-proxy.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-http-requests-hooks.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-http-requests-response.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-http-response.php HTTP API: Use WP_HTTP_Response::set_data() in ::__construct() instead of directly accessing the $data property. 2017-10-03 15:18:46 +00:00
class-wp-http-streams.php HTTP API: Add the URL as a paramter to various HTTP related filters. 2018-02-09 18:11:30 +00:00
class-wp-image-editor-gd.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-image-editor-imagick.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-image-editor.php Media: After [42695], remove redundant check that is already performed a few lines above. 2018-02-11 21:55:30 +00:00
class-wp-list-util.php General: Allow wp_list_pluck() to operate on arrays of references without overwriting the referenced items. 2018-01-18 05:18:31 +00:00
class-wp-locale-switcher.php Docs: Add @since version for WP_Locale_Switcher::init(). 2017-12-15 00:32:46 +00:00
class-wp-locale.php I18N: Remove unused $start_of_week property from WP_Locale. 2018-02-18 16:32:34 +00:00
class-wp-matchesmapregex.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-meta-query.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-metadata-lazyloader.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-network-query.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-network.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-oembed-controller.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-post-type.php Docs: Remove @access notations from method DocBlocks in wp-includes/* classes. 2017-07-27 00:41:44 +00:00
class-wp-post.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-query.php Query: Fix warning on counting non countable 2018-01-24 01:21:31 +00:00
class-wp-rewrite.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-role.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-roles.php Docs: Add missing code formatting to various @since entries. 2018-02-09 16:55:31 +00:00
class-wp-session-tokens.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-simplepie-file.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-simplepie-sanitize-kses.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-site-query.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-site.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-tax-query.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-taxonomy.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-term-query.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-term.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-text-diff-renderer-inline.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-text-diff-renderer-table.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-theme.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-user-meta-session-tokens.php Docs: Remove @access notations from method DocBlocks in wp-includes/* classes. 2017-07-27 00:41:44 +00:00
class-wp-user-query.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-user.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-walker.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-widget-factory.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-widget.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class-wp-xmlrpc-server.php General: Further improve error messages following [42648]. 2018-02-19 02:13:32 +00:00
class-wp.php WP: Don't attempt to convert multiple-nested arrays to a string in WP->parse_request(). 2017-12-22 03:18:47 +00:00
class.wp-dependencies.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class.wp-scripts.php Code is Poetry. 2017-11-30 23:11:00 +00:00
class.wp-styles.php Code is Poetry. 2017-11-30 23:11:00 +00:00
comment-template.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
comment.php Docs: Add missing code formatting to various @since entries. 2018-02-09 16:55:31 +00:00
compat.php Code is Poetry. 2017-11-30 23:11:00 +00:00
cron.php Code is Poetry. 2017-11-30 23:11:00 +00:00
date.php Code is Poetry. 2017-11-30 23:11:00 +00:00
default-constants.php Docs: Fix a copy paste error in the DocBlock summary for wp_ssl_constants(), see [13062]. 2018-02-09 18:21:31 +00:00
default-filters.php Formatting: Do not run formatting and texturization on author bios. 2018-01-13 01:11:49 +00:00
default-widgets.php Widgets: Introduce Gallery widget for displaying image galleries. 2017-09-25 06:28:45 +00:00
deprecated.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
embed-template.php
embed.php Code is Poetry. 2017-11-30 23:11:00 +00:00
feed-atom-comments.php Code is Poetry. 2017-11-30 23:11:00 +00:00
feed-atom.php Code is Poetry. 2017-11-30 23:11:00 +00:00
feed-rdf.php Code is Poetry. 2017-11-30 23:11:00 +00:00
feed-rss.php Code is Poetry. 2017-11-30 23:11:00 +00:00
feed-rss2-comments.php Code is Poetry. 2017-11-30 23:11:00 +00:00
feed-rss2.php Code is Poetry. 2017-11-30 23:11:00 +00:00
feed.php Docs: Remove erroneous zero-width space before URL in fetch_feed() DocBlock. 2017-12-21 02:40:54 +00:00
formatting.php Emoji: Tweak the generated emoji arrays to not cause coding standards errors. 2018-01-25 01:06:31 +00:00
functions.php General: Further improve error messages following [42648]. 2018-02-19 02:13:32 +00:00
functions.wp-scripts.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
functions.wp-styles.php Code is Poetry. 2017-11-30 23:11:00 +00:00
general-template.php Comments: Avoid a PHP notice in paginate_comments_links() if type argument is set to array. 2018-02-12 21:12:35 +00:00
http.php Docs: Add missing code formatting to various @since entries. 2018-02-09 16:55:31 +00:00
kses.php Docs: Move inline comments in wp_kses_split2() before the blocks they apply to. 2018-02-14 11:46:33 +00:00
l10n.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
link-template.php Comments: Avoid a PHP notice in paginate_comments_links() if type argument is set to array. 2018-02-12 21:12:35 +00:00
load.php Cache API: Allow external object caches to gracefully degrade to the default object cache. 2018-02-21 14:59:30 +00:00
locale.php
media-template.php Media: avoid page scrolling when opening the media modal. 2018-01-31 17:03:33 +00:00
media.php Media: In img_caption_shortcode(), make sure $id and $caption_id are always defined. 2018-02-12 22:36:33 +00:00
meta.php Code is Poetry. 2017-11-30 23:11:00 +00:00
ms-blogs.php Docs: Add missing code formatting to various @since entries. 2018-02-09 16:55:31 +00:00
ms-default-constants.php Code is Poetry. 2017-11-30 23:11:00 +00:00
ms-default-filters.php Code is Poetry. 2017-11-30 23:11:00 +00:00
ms-deprecated.php Docs: Correct some @since MU notation that was broken in [41200]. 2017-10-03 17:44:48 +00:00
ms-files.php Code is Poetry. 2017-11-30 23:11:00 +00:00
ms-functions.php Docs: Add missing code formatting to various @since entries. 2018-02-09 16:55:31 +00:00
ms-load.php Networks and Sites: In get_site_by_path(), use single domain and path parameters if there's only one item to look for. 2018-02-11 17:09:31 +00:00
ms-settings.php Code is Poetry. 2017-11-30 23:11:00 +00:00
nav-menu-template.php Code is Poetry. 2017-11-30 23:11:00 +00:00
nav-menu.php Menus: Remove $_menu_item_sort_prop global reference from wp_get_nav_menu_items(), unused since [38928]. 2018-02-01 15:42:31 +00:00
option.php Options: Unhook default option filter when setting is unregistered. 2018-02-06 14:49:32 +00:00
pluggable-deprecated.php
pluggable.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
plugin.php Code is Poetry. 2017-11-30 23:11:00 +00:00
post-formats.php Code is Poetry. 2017-11-30 23:11:00 +00:00
post-template.php Docs: Add a reference to get_pages() arguments in wp_dropdown_pages() and wp_list_pages(), as they both use the function internally. 2018-02-19 22:24:31 +00:00
post-thumbnail-template.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
post.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
query.php Docs: Correct $id parameter type for old_slug_redirect_post_id filter. 2018-02-21 09:35:33 +00:00
registration-functions.php Code is Poetry. 2017-11-30 23:11:00 +00:00
registration.php Code is Poetry. 2017-11-30 23:11:00 +00:00
rest-api.php Code is Poetry. 2017-11-30 23:11:00 +00:00
revision.php Code is Poetry. 2017-11-30 23:11:00 +00:00
rewrite.php Code is Poetry. 2017-11-30 23:11:00 +00:00
rss-functions.php Code is Poetry. 2017-11-30 23:11:00 +00:00
rss.php
script-loader.php General: Further improve error messages following [42648]. 2018-02-19 02:13:32 +00:00
session.php Code is Poetry. 2017-11-30 23:11:00 +00:00
shortcodes.php Code is Poetry. 2017-11-30 23:11:00 +00:00
spl-autoload-compat.php General: Move the __autoload() compat function into its own file to prevent deprecated notices being thrown by the compiler in PHP 7.2. 2017-07-28 01:15:52 +00:00
taxonomy.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
template-loader.php Code is Poetry. 2017-11-30 23:11:00 +00:00
template.php Docs: Add missing code formatting to various @since entries. 2018-02-09 16:55:31 +00:00
theme.php Docs: Add documentation for header_video_settings filter. 2018-02-12 22:39:31 +00:00
update.php Updates: Partially revert [42584], as this branch of code should always be run after a core update check. 2018-02-06 11:04:34 +00:00
user.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
vars.php Code is Poetry. 2017-11-30 23:11:00 +00:00
version.php Cache API: Allow external object caches to gracefully degrade to the default object cache. 2018-02-21 14:59:30 +00:00
widgets.php Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. 2018-02-13 16:54:31 +00:00
wlwmanifest.xml
wp-db.php Database: If both WP_DEBUG and WP_DEBUG_DISPLAY are true, display a more specific error message in wpdb::bail(). 2018-02-15 14:29:30 +00:00
wp-diff.php Code is Poetry. 2017-11-30 23:11:00 +00:00