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<?php
/**
 * WordPress core upgrade functionality.
 *
 * Note: Newly introduced functions and methods cannot be used here.
 * All functions must be present in the previous version being upgraded from
 * as this file is used there too.
 *
 * @package WordPress
 * @subpackage Administration
 * @since 2.7.0
 */

/**
 * Stores files to be deleted.
 *
 * Bundled theme files should not be included in this list.
 *
 * @since 2.7.0
 *
 * @global string[] $_old_files
 * @var string[]
 * @name $_old_files
 */
global $_old_files;

$_old_files = array(
	// 2.0
	'wp-admin/import-b2.php',
	'wp-admin/import-blogger.php',
	'wp-admin/import-greymatter.php',
	'wp-admin/import-livejournal.php',
	'wp-admin/import-mt.php',
	'wp-admin/import-rss.php',
	'wp-admin/import-textpattern.php',
	'wp-admin/quicktags.js',
	'wp-images/fade-butt.png',
	'wp-images/get-firefox.png',
	'wp-images/header-shadow.png',
	'wp-images/smilies',
	'wp-images/wp-small.png',
	'wp-images/wpminilogo.png',
	'wp.php',
	// 2.1
	'wp-admin/edit-form-ajax-cat.php',
	'wp-admin/execute-pings.php',
	'wp-admin/inline-uploading.php',
	'wp-admin/link-categories.php',
	'wp-admin/list-manipulation.js',
	'wp-admin/list-manipulation.php',
	'wp-includes/comment-functions.php',
	'wp-includes/feed-functions.php',
	'wp-includes/functions-compat.php',
	'wp-includes/functions-formatting.php',
	'wp-includes/functions-post.php',
	'wp-includes/js/dbx-key.js',
	'wp-includes/links.php',
	'wp-includes/pluggable-functions.php',
	'wp-includes/template-functions-author.php',
	'wp-includes/template-functions-category.php',
	'wp-includes/template-functions-general.php',
	'wp-includes/template-functions-links.php',
	'wp-includes/template-functions-post.php',
	'wp-includes/wp-l10n.php',
	// 2.2
	'wp-admin/cat-js.php',
	'wp-includes/js/autosave-js.php',
	'wp-includes/js/list-manipulation-js.php',
	'wp-includes/js/wp-ajax-js.php',
	// 2.3
	'wp-admin/admin-db.php',
	'wp-admin/cat.js',
	'wp-admin/categories.js',
	'wp-admin/custom-fields.js',
	'wp-admin/dbx-admin-key.js',
	'wp-admin/edit-comments.js',
	'wp-admin/install-rtl.css',
	'wp-admin/install.css',
	'wp-admin/upgrade-schema.php',
	'wp-admin/upload-functions.php',
	'wp-admin/upload-rtl.css',
	'wp-admin/upload.css',
	'wp-admin/upload.js',
	'wp-admin/users.js',
	'wp-admin/widgets-rtl.css',
	'wp-admin/widgets.css',
	'wp-admin/xfn.js',
	'wp-includes/js/tinymce/license.html',
	// 2.5
	'wp-admin/css/upload.css',
	'wp-admin/images/box-bg-left.gif',
	'wp-admin/images/box-bg-right.gif',
	'wp-admin/images/box-bg.gif',
	'wp-admin/images/box-butt-left.gif',
	'wp-admin/images/box-butt-right.gif',
	'wp-admin/images/box-butt.gif',
	'wp-admin/images/box-head-left.gif',
	'wp-admin/images/box-head-right.gif',
	'wp-admin/images/box-head.gif',
	'wp-admin/images/heading-bg.gif',
	'wp-admin/images/login-bkg-bottom.gif',
	'wp-admin/images/login-bkg-tile.gif',
	'wp-admin/images/notice.gif',
	'wp-admin/images/toggle.gif',
	'wp-admin/includes/upload.php',
	'wp-admin/js/dbx-admin-key.js',
	'wp-admin/js/link-cat.js',
	'wp-admin/profile-update.php',
	'wp-admin/templates.php',
	'wp-includes/js/dbx.js',
	'wp-includes/js/fat.js',
	'wp-includes/js/list-manipulation.js',
	'wp-includes/js/tinymce/langs/en.js',
	'wp-includes/js/tinymce/plugins/directionality/images',
	'wp-includes/js/tinymce/plugins/directionality/langs',
	'wp-includes/js/tinymce/plugins/paste/images',
	'wp-includes/js/tinymce/plugins/paste/jscripts',
	'wp-includes/js/tinymce/plugins/paste/langs',
	'wp-includes/js/tinymce/plugins/wordpress/images',
	'wp-includes/js/tinymce/plugins/wordpress/langs',
	'wp-includes/js/tinymce/plugins/wordpress/wordpress.css',
	'wp-includes/js/tinymce/plugins/wphelp',
	// 2.5.1
	'wp-includes/js/tinymce/tiny_mce_gzip.php',
	// 2.6
	'wp-admin/bookmarklet.php',
	'wp-includes/js/jquery/jquery.dimensions.min.js',
	'wp-includes/js/tinymce/plugins/wordpress/popups.css',
	'wp-includes/js/wp-ajax.js',
	// 2.7
	'wp-admin/css/press-this-ie-rtl.css',
	'wp-admin/css/press-this-ie.css',
	'wp-admin/css/upload-rtl.css',
	'wp-admin/edit-form.php',
	'wp-admin/images/comment-pill.gif',
	'wp-admin/images/comment-stalk-classic.gif',
	'wp-admin/images/comment-stalk-fresh.gif',
	'wp-admin/images/comment-stalk-rtl.gif',
	'wp-admin/images/del.png',
	'wp-admin/images/gear.png',
	'wp-admin/images/media-button-gallery.gif',
	'wp-admin/images/media-buttons.gif',
	'wp-admin/images/postbox-bg.gif',
	'wp-admin/images/tab.png',
	'wp-admin/images/tail.gif',
	'wp-admin/js/forms.js',
	'wp-admin/js/upload.js',
	'wp-admin/link-import.php',
	'wp-includes/images/audio.png',
	'wp-includes/images/css.png',
	'wp-includes/images/default.png',
	'wp-includes/images/doc.png',
	'wp-includes/images/exe.png',
	'wp-includes/images/html.png',
	'wp-includes/images/js.png',
	'wp-includes/images/pdf.png',
	'wp-includes/images/swf.png',
	'wp-includes/images/tar.png',
	'wp-includes/images/text.png',
	'wp-includes/images/video.png',
	'wp-includes/images/zip.png',
	'wp-includes/js/tinymce/tiny_mce_config.php',
	'wp-includes/js/tinymce/tiny_mce_ext.js',
	// 2.8
	'wp-admin/js/users.js',
	'wp-includes/js/swfupload/swfupload_f9.swf',
	'wp-includes/js/tinymce/plugins/autosave',
	'wp-includes/js/tinymce/plugins/paste/css',
	'wp-includes/js/tinymce/utils/mclayer.js',
	'wp-includes/js/tinymce/wordpress.css',
	// 2.9
	'wp-admin/js/page.dev.js',
	'wp-admin/js/page.js',
	'wp-admin/js/set-post-thumbnail-handler.dev.js',
	'wp-admin/js/set-post-thumbnail-handler.js',
	'wp-admin/js/slug.dev.js',
	'wp-admin/js/slug.js',
	'wp-includes/gettext.php',
	'wp-includes/js/tinymce/plugins/wordpress/js',
	'wp-includes/streams.php',
	// MU
	'README.txt',
	'htaccess.dist',
	'index-install.php',
	'wp-admin/css/mu-rtl.css',
	'wp-admin/css/mu.css',
	'wp-admin/images/site-admin.png',
	'wp-admin/includes/mu.php',
	'wp-admin/wpmu-admin.php',
	'wp-admin/wpmu-blogs.php',
	'wp-admin/wpmu-edit.php',
	'wp-admin/wpmu-options.php',
	'wp-admin/wpmu-themes.php',
	'wp-admin/wpmu-upgrade-site.php',
	'wp-admin/wpmu-users.php',
	'wp-includes/images/wordpress-mu.png',
	'wp-includes/wpmu-default-filters.php',
	'wp-includes/wpmu-functions.php',
	'wpmu-settings.php',
	// 3.0
	'wp-admin/categories.php',
	'wp-admin/edit-category-form.php',
	'wp-admin/edit-page-form.php',
	'wp-admin/edit-pages.php',
	'wp-admin/images/admin-header-footer.png',
	'wp-admin/images/browse-happy.gif',
	'wp-admin/images/ico-add.png',
	'wp-admin/images/ico-close.png',
	'wp-admin/images/ico-edit.png',
	'wp-admin/images/ico-viewpage.png',
	'wp-admin/images/fav-top.png',
	'wp-admin/images/screen-options-left.gif',
	'wp-admin/images/wp-logo-vs.gif',
	'wp-admin/images/wp-logo.gif',
	'wp-admin/import',
	'wp-admin/js/wp-gears.dev.js',
	'wp-admin/js/wp-gears.js',
	'wp-admin/options-misc.php',
	'wp-admin/page-new.php',
	'wp-admin/page.php',
	'wp-admin/rtl.css',
	'wp-admin/rtl.dev.css',
	'wp-admin/update-links.php',
	'wp-admin/wp-admin.css',
	'wp-admin/wp-admin.dev.css',
	'wp-includes/js/codepress',
	'wp-includes/js/jquery/autocomplete.dev.js',
	'wp-includes/js/jquery/autocomplete.js',
	'wp-includes/js/jquery/interface.js',
	// Following file added back in 5.1, see #45645.
	//'wp-includes/js/tinymce/wp-tinymce.js',
	// 3.1
	'wp-admin/edit-attachment-rows.php',
	'wp-admin/edit-link-categories.php',
	'wp-admin/edit-link-category-form.php',
	'wp-admin/edit-post-rows.php',
	'wp-admin/images/button-grad-active-vs.png',
	'wp-admin/images/button-grad-vs.png',
	'wp-admin/images/fav-arrow-vs-rtl.gif',
	'wp-admin/images/fav-arrow-vs.gif',
	'wp-admin/images/fav-top-vs.gif',
	'wp-admin/images/list-vs.png',
	'wp-admin/images/screen-options-right-up.gif',
	'wp-admin/images/screen-options-right.gif',
	'wp-admin/images/visit-site-button-grad-vs.gif',
	'wp-admin/images/visit-site-button-grad.gif',
	'wp-admin/link-category.php',
	'wp-admin/sidebar.php',
	'wp-includes/classes.php',
	'wp-includes/js/tinymce/blank.htm',
	'wp-includes/js/tinymce/plugins/media/img',
	'wp-includes/js/tinymce/plugins/safari',
	// 3.2
	'wp-admin/images/logo-login.gif',
	'wp-admin/images/star.gif',
	'wp-admin/js/list-table.dev.js',
	'wp-admin/js/list-table.js',
	'wp-includes/default-embeds.php',
	// 3.3
	'wp-admin/css/colors-classic-rtl.css',
	'wp-admin/css/colors-classic-rtl.dev.css',
	'wp-admin/css/colors-fresh-rtl.css',
	'wp-admin/css/colors-fresh-rtl.dev.css',
	'wp-admin/css/dashboard-rtl.dev.css',
	'wp-admin/css/dashboard.dev.css',
	'wp-admin/css/global-rtl.css',
	'wp-admin/css/global-rtl.dev.css',
	'wp-admin/css/global.css',
	'wp-admin/css/global.dev.css',
	'wp-admin/css/install-rtl.dev.css',
	'wp-admin/css/login-rtl.dev.css',
	'wp-admin/css/login.dev.css',
	'wp-admin/css/ms.css',
	'wp-admin/css/ms.dev.css',
	'wp-admin/css/nav-menu-rtl.css',
	'wp-admin/css/nav-menu-rtl.dev.css',
	'wp-admin/css/nav-menu.css',
	'wp-admin/css/nav-menu.dev.css',
	'wp-admin/css/plugin-install-rtl.css',
	'wp-admin/css/plugin-install-rtl.dev.css',
	'wp-admin/css/plugin-install.css',
	'wp-admin/css/plugin-install.dev.css',
	'wp-admin/css/press-this-rtl.dev.css',
	'wp-admin/css/press-this.dev.css',
	'wp-admin/css/theme-editor-rtl.css',
	'wp-admin/css/theme-editor-rtl.dev.css',
	'wp-admin/css/theme-editor.css',
	'wp-admin/css/theme-editor.dev.css',
	'wp-admin/css/theme-install-rtl.css',
	'wp-admin/css/theme-install-rtl.dev.css',
	'wp-admin/css/theme-install.css',
	'wp-admin/css/theme-install.dev.css',
	'wp-admin/css/widgets-rtl.dev.css',
	'wp-admin/css/widgets.dev.css',
	'wp-admin/includes/internal-linking.php',
	'wp-includes/images/admin-bar-sprite-rtl.png',
	'wp-includes/js/jquery/ui.button.js',
	'wp-includes/js/jquery/ui.core.js',
	'wp-includes/js/jquery/ui.dialog.js',
	'wp-includes/js/jquery/ui.draggable.js',
	'wp-includes/js/jquery/ui.droppable.js',
	'wp-includes/js/jquery/ui.mouse.js',
	'wp-includes/js/jquery/ui.position.js',
	'wp-includes/js/jquery/ui.resizable.js',
	'wp-includes/js/jquery/ui.selectable.js',
	'wp-includes/js/jquery/ui.sortable.js',
	'wp-includes/js/jquery/ui.tabs.js',
	'wp-includes/js/jquery/ui.widget.js',
	'wp-includes/js/l10n.dev.js',
	'wp-includes/js/l10n.js',
	'wp-includes/js/tinymce/plugins/wplink/css',
	'wp-includes/js/tinymce/plugins/wplink/img',
	'wp-includes/js/tinymce/plugins/wplink/js',
	// Don't delete, yet: 'wp-rss.php',
	// Don't delete, yet: 'wp-rdf.php',
	// Don't delete, yet: 'wp-rss2.php',
	// Don't delete, yet: 'wp-commentsrss2.php',
	// Don't delete, yet: 'wp-atom.php',
	// Don't delete, yet: 'wp-feed.php',
	// 3.4
	'wp-admin/images/gray-star.png',
	'wp-admin/images/logo-login.png',
	'wp-admin/images/star.png',
	'wp-admin/index-extra.php',
	'wp-admin/network/index-extra.php',
	'wp-admin/user/index-extra.php',
	'wp-includes/css/editor-buttons.css',
	'wp-includes/css/editor-buttons.dev.css',
	'wp-includes/js/tinymce/plugins/paste/blank.htm',
	'wp-includes/js/tinymce/plugins/wordpress/css',
	'wp-includes/js/tinymce/plugins/wordpress/editor_plugin.dev.js',
	'wp-includes/js/tinymce/plugins/wpdialogs/editor_plugin.dev.js',
	'wp-includes/js/tinymce/plugins/wpeditimage/editor_plugin.dev.js',
	'wp-includes/js/tinymce/plugins/wpgallery/editor_plugin.dev.js',
	'wp-includes/js/tinymce/plugins/wplink/editor_plugin.dev.js',
	// Don't delete, yet: 'wp-pass.php',
	// Don't delete, yet: 'wp-register.php',
	// 3.5
	'wp-admin/gears-manifest.php',
	'wp-admin/includes/manifest.php',
	'wp-admin/images/archive-link.png',
	'wp-admin/images/blue-grad.png',
	'wp-admin/images/button-grad-active.png',
	'wp-admin/images/button-grad.png',
	'wp-admin/images/ed-bg-vs.gif',
	'wp-admin/images/ed-bg.gif',
	'wp-admin/images/fade-butt.png',
	'wp-admin/images/fav-arrow-rtl.gif',
	'wp-admin/images/fav-arrow.gif',
	'wp-admin/images/fav-vs.png',
	'wp-admin/images/fav.png',
	'wp-admin/images/gray-grad.png',
	'wp-admin/images/loading-publish.gif',
	'wp-admin/images/logo-ghost.png',
	'wp-admin/images/logo.gif',
	'wp-admin/images/menu-arrow-frame-rtl.png',
	'wp-admin/images/menu-arrow-frame.png',
	'wp-admin/images/menu-arrows.gif',
	'wp-admin/images/menu-bits-rtl-vs.gif',
	'wp-admin/images/menu-bits-rtl.gif',
	'wp-admin/images/menu-bits-vs.gif',
	'wp-admin/images/menu-bits.gif',
	'wp-admin/images/menu-dark-rtl-vs.gif',
	'wp-admin/images/menu-dark-rtl.gif',
	'wp-admin/images/menu-dark-vs.gif',
	'wp-admin/images/menu-dark.gif',
	'wp-admin/images/required.gif',
	'wp-admin/images/screen-options-toggle-vs.gif',
	'wp-admin/images/screen-options-toggle.gif',
	'wp-admin/images/toggle-arrow-rtl.gif',
	'wp-admin/images/toggle-arrow.gif',
	'wp-admin/images/upload-classic.png',
	'wp-admin/images/upload-fresh.png',
	'wp-admin/images/white-grad-active.png',
	'wp-admin/images/white-grad.png',
	'wp-admin/images/widgets-arrow-vs.gif',
	'wp-admin/images/widgets-arrow.gif',
	'wp-admin/images/wpspin_dark.gif',
	'wp-includes/images/upload.png',
	'wp-includes/js/prototype.js',
	'wp-includes/js/scriptaculous',
	'wp-admin/css/wp-admin-rtl.dev.css',
	'wp-admin/css/wp-admin.dev.css',
	'wp-admin/css/media-rtl.dev.css',
	'wp-admin/css/media.dev.css',
	'wp-admin/css/colors-classic.dev.css',
	'wp-admin/css/customize-controls-rtl.dev.css',
	'wp-admin/css/customize-controls.dev.css',
	'wp-admin/css/ie-rtl.dev.css',
	'wp-admin/css/ie.dev.css',
	'wp-admin/css/install.dev.css',
	'wp-admin/css/colors-fresh.dev.css',
	'wp-includes/js/customize-base.dev.js',
	'wp-includes/js/json2.dev.js',
	'wp-includes/js/comment-reply.dev.js',
	'wp-includes/js/customize-preview.dev.js',
	'wp-includes/js/wplink.dev.js',
	'wp-includes/js/tw-sack.dev.js',
	'wp-includes/js/wp-list-revisions.dev.js',
	'wp-includes/js/autosave.dev.js',
	'wp-includes/js/admin-bar.dev.js',
	'wp-includes/js/quicktags.dev.js',
	'wp-includes/js/wp-ajax-response.dev.js',
	'wp-includes/js/wp-pointer.dev.js',
	'wp-includes/js/hoverIntent.dev.js',
	'wp-includes/js/colorpicker.dev.js',
	'wp-includes/js/wp-lists.dev.js',
	'wp-includes/js/customize-loader.dev.js',
	'wp-includes/js/jquery/jquery.table-hotkeys.dev.js',
	'wp-includes/js/jquery/jquery.color.dev.js',
	'wp-includes/js/jquery/jquery.color.js',
	'wp-includes/js/jquery/jquery.hotkeys.dev.js',
	'wp-includes/js/jquery/jquery.form.dev.js',
	'wp-includes/js/jquery/suggest.dev.js',
	'wp-admin/js/xfn.dev.js',
	'wp-admin/js/set-post-thumbnail.dev.js',
	'wp-admin/js/comment.dev.js',
	'wp-admin/js/theme.dev.js',
	'wp-admin/js/cat.dev.js',
	'wp-admin/js/password-strength-meter.dev.js',
	'wp-admin/js/user-profile.dev.js',
	'wp-admin/js/theme-preview.dev.js',
	'wp-admin/js/post.dev.js',
	'wp-admin/js/media-upload.dev.js',
	'wp-admin/js/word-count.dev.js',
	'wp-admin/js/plugin-install.dev.js',
	'wp-admin/js/edit-comments.dev.js',
	'wp-admin/js/media-gallery.dev.js',
	'wp-admin/js/custom-fields.dev.js',
	'wp-admin/js/custom-background.dev.js',
	'wp-admin/js/common.dev.js',
	'wp-admin/js/inline-edit-tax.dev.js',
	'wp-admin/js/gallery.dev.js',
	'wp-admin/js/utils.dev.js',
	'wp-admin/js/widgets.dev.js',
	'wp-admin/js/wp-fullscreen.dev.js',
	'wp-admin/js/nav-menu.dev.js',
	'wp-admin/js/dashboard.dev.js',
	'wp-admin/js/link.dev.js',
	'wp-admin/js/user-suggest.dev.js',
	'wp-admin/js/postbox.dev.js',
	'wp-admin/js/tags.dev.js',
	'wp-admin/js/image-edit.dev.js',
	'wp-admin/js/media.dev.js',
	'wp-admin/js/customize-controls.dev.js',
	'wp-admin/js/inline-edit-post.dev.js',
	'wp-admin/js/categories.dev.js',
	'wp-admin/js/editor.dev.js',
	'wp-includes/js/plupload/handlers.dev.js',
	'wp-includes/js/plupload/wp-plupload.dev.js',
	'wp-includes/js/swfupload/handlers.dev.js',
	'wp-includes/js/jcrop/jquery.Jcrop.dev.js',
	'wp-includes/js/jcrop/jquery.Jcrop.js',
	'wp-includes/js/jcrop/jquery.Jcrop.css',
	'wp-includes/js/imgareaselect/jquery.imgareaselect.dev.js',
	'wp-includes/css/wp-pointer.dev.css',
	'wp-includes/css/editor.dev.css',
	'wp-includes/css/jquery-ui-dialog.dev.css',
	'wp-includes/css/admin-bar-rtl.dev.css',
	'wp-includes/css/admin-bar.dev.css',
	'wp-includes/js/jquery/ui/jquery.effects.clip.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.scale.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.blind.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.core.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.shake.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.fade.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.explode.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.slide.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.drop.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.highlight.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.bounce.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.pulsate.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.transfer.min.js',
	'wp-includes/js/jquery/ui/jquery.effects.fold.min.js',
	'wp-admin/js/utils.js',
	// Added back in 5.3 [45448], see #43895.
	// 'wp-admin/options-privacy.php',
	'wp-app.php',
	'wp-includes/class-wp-atom-server.php',
	// 3.5.2
	'wp-includes/js/swfupload/swfupload-all.js',
	// 3.6
	'wp-admin/js/revisions-js.php',
	'wp-admin/images/screenshots',
	'wp-admin/js/categories.js',
	'wp-admin/js/categories.min.js',
	'wp-admin/js/custom-fields.js',
	'wp-admin/js/custom-fields.min.js',
	// 3.7
	'wp-admin/js/cat.js',
	'wp-admin/js/cat.min.js',
	// 3.8
	'wp-includes/js/thickbox/tb-close-2x.png',
	'wp-includes/js/thickbox/tb-close.png',
	'wp-includes/images/wpmini-blue-2x.png',
	'wp-includes/images/wpmini-blue.png',
	'wp-admin/css/colors-fresh.css',
	'wp-admin/css/colors-classic.css',
	'wp-admin/css/colors-fresh.min.css',
	'wp-admin/css/colors-classic.min.css',
	'wp-admin/js/about.min.js',
	'wp-admin/js/about.js',
	'wp-admin/images/arrows-dark-vs-2x.png',
	'wp-admin/images/wp-logo-vs.png',
	'wp-admin/images/arrows-dark-vs.png',
	'wp-admin/images/wp-logo.png',
	'wp-admin/images/arrows-pr.png',
	'wp-admin/images/arrows-dark.png',
	'wp-admin/images/press-this.png',
	'wp-admin/images/press-this-2x.png',
	'wp-admin/images/arrows-vs-2x.png',
	'wp-admin/images/welcome-icons.png',
	'wp-admin/images/wp-logo-2x.png',
	'wp-admin/images/stars-rtl-2x.png',
	'wp-admin/images/arrows-dark-2x.png',
	'wp-admin/images/arrows-pr-2x.png',
	'wp-admin/images/menu-shadow-rtl.png',
	'wp-admin/images/arrows-vs.png',
	'wp-admin/images/about-search-2x.png',
	'wp-admin/images/bubble_bg-rtl-2x.gif',
	'wp-admin/images/wp-badge-2x.png',
	'wp-admin/images/wordpress-logo-2x.png',
	'wp-admin/images/bubble_bg-rtl.gif',
	'wp-admin/images/wp-badge.png',
	'wp-admin/images/menu-shadow.png',
	'wp-admin/images/about-globe-2x.png',
	'wp-admin/images/welcome-icons-2x.png',
	'wp-admin/images/stars-rtl.png',
	'wp-admin/images/wp-logo-vs-2x.png',
	'wp-admin/images/about-updates-2x.png',
	// 3.9
	'wp-admin/css/colors.css',
	'wp-admin/css/colors.min.css',
	'wp-admin/css/colors-rtl.css',
	'wp-admin/css/colors-rtl.min.css',
	// Following files added back in 4.5, see #36083.
	// 'wp-admin/css/media-rtl.min.css',
	// 'wp-admin/css/media.min.css',
	// 'wp-admin/css/farbtastic-rtl.min.css',
	'wp-admin/images/lock-2x.png',
	'wp-admin/images/lock.png',
	'wp-admin/js/theme-preview.js',
	'wp-admin/js/theme-install.min.js',
	'wp-admin/js/theme-install.js',
	'wp-admin/js/theme-preview.min.js',
	'wp-includes/js/plupload/plupload.html4.js',
	'wp-includes/js/plupload/plupload.html5.js',
	'wp-includes/js/plupload/changelog.txt',
	'wp-includes/js/plupload/plupload.silverlight.js',
	'wp-includes/js/plupload/plupload.flash.js',
	// Added back in 4.9 [41328], see #41755.
	// 'wp-includes/js/plupload/plupload.js',
	'wp-includes/js/tinymce/plugins/spellchecker',
	'wp-includes/js/tinymce/plugins/inlinepopups',
	'wp-includes/js/tinymce/plugins/media/js',
	'wp-includes/js/tinymce/plugins/media/css',
	'wp-includes/js/tinymce/plugins/wordpress/img',
	'wp-includes/js/tinymce/plugins/wpdialogs/js',
	'wp-includes/js/tinymce/plugins/wpeditimage/img',
	'wp-includes/js/tinymce/plugins/wpeditimage/js',
	'wp-includes/js/tinymce/plugins/wpeditimage/css',
	'wp-includes/js/tinymce/plugins/wpgallery/img',
	'wp-includes/js/tinymce/plugins/paste/js',
	'wp-includes/js/tinymce/themes/advanced',
	'wp-includes/js/tinymce/tiny_mce.js',
	'wp-includes/js/tinymce/mark_loaded_src.js',
	'wp-includes/js/tinymce/wp-tinymce-schema.js',
	'wp-includes/js/tinymce/plugins/media/editor_plugin.js',
	'wp-includes/js/tinymce/plugins/media/editor_plugin_src.js',
	'wp-includes/js/tinymce/plugins/media/media.htm',
	'wp-includes/js/tinymce/plugins/wpview/editor_plugin_src.js',
	'wp-includes/js/tinymce/plugins/wpview/editor_plugin.js',
	'wp-includes/js/tinymce/plugins/directionality/editor_plugin.js',
	'wp-includes/js/tinymce/plugins/directionality/editor_plugin_src.js',
	'wp-includes/js/tinymce/plugins/wordpress/editor_plugin.js',
	'wp-includes/js/tinymce/plugins/wordpress/editor_plugin_src.js',
	'wp-includes/js/tinymce/plugins/wpdialogs/editor_plugin_src.js',
	'wp-includes/js/tinymce/plugins/wpdialogs/editor_plugin.js',
	'wp-includes/js/tinymce/plugins/wpeditimage/editimage.html',
	'wp-includes/js/tinymce/plugins/wpeditimage/editor_plugin.js',
	'wp-includes/js/tinymce/plugins/wpeditimage/editor_plugin_src.js',
	'wp-includes/js/tinymce/plugins/fullscreen/editor_plugin_src.js',
	'wp-includes/js/tinymce/plugins/fullscreen/fullscreen.htm',
	'wp-includes/js/tinymce/plugins/fullscreen/editor_plugin.js',
	'wp-includes/js/tinymce/plugins/wplink/editor_plugin_src.js',
	'wp-includes/js/tinymce/plugins/wplink/editor_plugin.js',
	'wp-includes/js/tinymce/plugins/wpgallery/editor_plugin_src.js',
	'wp-includes/js/tinymce/plugins/wpgallery/editor_plugin.js',
	'wp-includes/js/tinymce/plugins/tabfocus/editor_plugin.js',
	'wp-includes/js/tinymce/plugins/tabfocus/editor_plugin_src.js',
	'wp-includes/js/tinymce/plugins/paste/editor_plugin.js',
	'wp-includes/js/tinymce/plugins/paste/pasteword.htm',
	'wp-includes/js/tinymce/plugins/paste/editor_plugin_src.js',
	'wp-includes/js/tinymce/plugins/paste/pastetext.htm',
	'wp-includes/js/tinymce/langs/wp-langs.php',
	// 4.1
	'wp-includes/js/jquery/ui/jquery.ui.accordion.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.autocomplete.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.button.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.core.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.datepicker.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.dialog.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.draggable.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.droppable.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-blind.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-bounce.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-clip.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-drop.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-explode.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-fade.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-fold.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-highlight.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-pulsate.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-scale.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-shake.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-slide.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect-transfer.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.effect.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.menu.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.mouse.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.position.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.progressbar.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.resizable.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.selectable.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.slider.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.sortable.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.spinner.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.tabs.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.tooltip.min.js',
	'wp-includes/js/jquery/ui/jquery.ui.widget.min.js',
	'wp-includes/js/tinymce/skins/wordpress/images/dashicon-no-alt.png',
	// 4.3
	'wp-admin/js/wp-fullscreen.js',
	'wp-admin/js/wp-fullscreen.min.js',
	'wp-includes/js/tinymce/wp-mce-help.php',
	'wp-includes/js/tinymce/plugins/wpfullscreen',
	// 4.5
	'wp-includes/theme-compat/comments-popup.php',
	// 4.6
	'wp-admin/includes/class-wp-automatic-upgrader.php', // Wrong file name, see #37628.
	// 4.8
	'wp-includes/js/tinymce/plugins/wpembed',
	'wp-includes/js/tinymce/plugins/media/moxieplayer.swf',
	'wp-includes/js/tinymce/skins/lightgray/fonts/readme.md',
	'wp-includes/js/tinymce/skins/lightgray/fonts/tinymce-small.json',
	'wp-includes/js/tinymce/skins/lightgray/fonts/tinymce.json',
	'wp-includes/js/tinymce/skins/lightgray/skin.ie7.min.css',
	// 4.9
	'wp-admin/css/press-this-editor-rtl.css',
	'wp-admin/css/press-this-editor-rtl.min.css',
	'wp-admin/css/press-this-editor.css',
	'wp-admin/css/press-this-editor.min.css',
	'wp-admin/css/press-this-rtl.css',
	'wp-admin/css/press-this-rtl.min.css',
	'wp-admin/css/press-this.css',
	'wp-admin/css/press-this.min.css',
	'wp-admin/includes/class-wp-press-this.php',
	'wp-admin/js/bookmarklet.js',
	'wp-admin/js/bookmarklet.min.js',
	'wp-admin/js/press-this.js',
	'wp-admin/js/press-this.min.js',
	'wp-includes/js/mediaelement/background.png',
	'wp-includes/js/mediaelement/bigplay.png',
	'wp-includes/js/mediaelement/bigplay.svg',
	'wp-includes/js/mediaelement/controls.png',
	'wp-includes/js/mediaelement/controls.svg',
	'wp-includes/js/mediaelement/flashmediaelement.swf',
	'wp-includes/js/mediaelement/froogaloop.min.js',
	'wp-includes/js/mediaelement/jumpforward.png',
	'wp-includes/js/mediaelement/loading.gif',
	'wp-includes/js/mediaelement/silverlightmediaelement.xap',
	'wp-includes/js/mediaelement/skipback.png',
	'wp-includes/js/plupload/plupload.flash.swf',
	'wp-includes/js/plupload/plupload.full.min.js',
	'wp-includes/js/plupload/plupload.silverlight.xap',
	'wp-includes/js/swfupload/plugins',
	'wp-includes/js/swfupload/swfupload.swf',
	// 4.9.2
	'wp-includes/js/mediaelement/lang',
	'wp-includes/js/mediaelement/mediaelement-flash-audio-ogg.swf',
	'wp-includes/js/mediaelement/mediaelement-flash-audio.swf',
	'wp-includes/js/mediaelement/mediaelement-flash-video-hls.swf',
	'wp-includes/js/mediaelement/mediaelement-flash-video-mdash.swf',
	'wp-includes/js/mediaelement/mediaelement-flash-video.swf',
	'wp-includes/js/mediaelement/renderers/dailymotion.js',
	'wp-includes/js/mediaelement/renderers/dailymotion.min.js',
	'wp-includes/js/mediaelement/renderers/facebook.js',
	'wp-includes/js/mediaelement/renderers/facebook.min.js',
	'wp-includes/js/mediaelement/renderers/soundcloud.js',
	'wp-includes/js/mediaelement/renderers/soundcloud.min.js',
	'wp-includes/js/mediaelement/renderers/twitch.js',
	'wp-includes/js/mediaelement/renderers/twitch.min.js',
	// 5.0
	'wp-includes/js/codemirror/jshint.js',
	// 5.1
	'wp-includes/js/tinymce/wp-tinymce.js.gz',
	// 5.3
	'wp-includes/js/wp-a11y.js',     // Moved to: wp-includes/js/dist/a11y.js
	'wp-includes/js/wp-a11y.min.js', // Moved to: wp-includes/js/dist/a11y.min.js
	// 5.4
	'wp-admin/js/wp-fullscreen-stub.js',
	'wp-admin/js/wp-fullscreen-stub.min.js',
	// 5.5
	'wp-admin/css/ie.css',
	'wp-admin/css/ie.min.css',
	'wp-admin/css/ie-rtl.css',
	'wp-admin/css/ie-rtl.min.css',
	// 5.6
	'wp-includes/js/jquery/ui/position.min.js',
	'wp-includes/js/jquery/ui/widget.min.js',
	// 5.7
	'wp-includes/blocks/classic/block.json',
	// 5.8
	'wp-admin/images/freedoms.png',
	'wp-admin/images/privacy.png',
	'wp-admin/images/about-badge.svg',
	'wp-admin/images/about-color-palette.svg',
	'wp-admin/images/about-color-palette-vert.svg',
	'wp-admin/images/about-header-brushes.svg',
	'wp-includes/block-patterns/large-header.php',
	'wp-includes/block-patterns/heading-paragraph.php',
	'wp-includes/block-patterns/quote.php',
	'wp-includes/block-patterns/text-three-columns-buttons.php',
	'wp-includes/block-patterns/two-buttons.php',
	'wp-includes/block-patterns/two-images.php',
	'wp-includes/block-patterns/three-buttons.php',
	'wp-includes/block-patterns/text-two-columns-with-images.php',
	'wp-includes/block-patterns/text-two-columns.php',
	'wp-includes/block-patterns/large-header-button.php',
	'wp-includes/blocks/subhead',
	'wp-includes/css/dist/editor/editor-styles.css',
	'wp-includes/css/dist/editor/editor-styles.min.css',
	'wp-includes/css/dist/editor/editor-styles-rtl.css',
	'wp-includes/css/dist/editor/editor-styles-rtl.min.css',
	// 5.9
	'wp-includes/blocks/heading/editor.css',
	'wp-includes/blocks/heading/editor.min.css',
	'wp-includes/blocks/heading/editor-rtl.css',
	'wp-includes/blocks/heading/editor-rtl.min.css',
	'wp-includes/blocks/query-title/editor.css',
	'wp-includes/blocks/query-title/editor.min.css',
	'wp-includes/blocks/query-title/editor-rtl.css',
	'wp-includes/blocks/query-title/editor-rtl.min.css',
	/*
	 * Restored in WordPress 6.7
	 *
	 * 'wp-includes/blocks/tag-cloud/editor.css',
	 * 'wp-includes/blocks/tag-cloud/editor.min.css',
	 * 'wp-includes/blocks/tag-cloud/editor-rtl.css',
	 * 'wp-includes/blocks/tag-cloud/editor-rtl.min.css',
	 */
	// 6.1
	'wp-includes/blocks/post-comments.php',
	'wp-includes/blocks/post-comments',
	'wp-includes/blocks/comments-query-loop',
	// 6.3
	'wp-includes/images/wlw',
	'wp-includes/wlwmanifest.xml',
	'wp-includes/random_compat',
	// 6.4
	'wp-includes/navigation-fallback.php',
	'wp-includes/blocks/navigation/view-modal.min.js',
	'wp-includes/blocks/navigation/view-modal.js',
	// 6.5
	'wp-includes/ID3/license.commercial.txt',
	'wp-includes/blocks/query/style-rtl.min.css',
	'wp-includes/blocks/query/style.min.css',
	'wp-includes/blocks/query/style-rtl.css',
	'wp-includes/blocks/query/style.css',
	'wp-admin/images/about-header-privacy.svg',
	'wp-admin/images/about-header-about.svg',
	'wp-admin/images/about-header-credits.svg',
	'wp-admin/images/about-header-freedoms.svg',
	'wp-admin/images/about-header-contribute.svg',
	'wp-admin/images/about-header-background.svg',
	// 6.6
	'wp-includes/blocks/block/editor.css',
	'wp-includes/blocks/block/editor.min.css',
	'wp-includes/blocks/block/editor-rtl.css',
	'wp-includes/blocks/block/editor-rtl.min.css',
	/*
	 * 6.7
	 *
	 * WordPress 6.7 included a SimplePie upgrade that included a major
	 * refactoring of the file structure and library. The old files are
	 * split in to two sections to account for this: files and directories.
	 *
	 * See https://core.trac.wordpress.org/changeset/59141
	 */
	// 6.7 - files
	'wp-includes/js/dist/interactivity-router.asset.php',
	'wp-includes/js/dist/interactivity-router.js',
	'wp-includes/js/dist/interactivity-router.min.js',
	'wp-includes/js/dist/interactivity-router.min.asset.php',
	'wp-includes/js/dist/interactivity.js',
	'wp-includes/js/dist/interactivity.min.js',
	'wp-includes/js/dist/vendor/react-dom.min.js.LICENSE.txt',
	'wp-includes/js/dist/vendor/react.min.js.LICENSE.txt',
	'wp-includes/js/dist/vendor/wp-polyfill-importmap.js',
	'wp-includes/js/dist/vendor/wp-polyfill-importmap.min.js',
	'wp-includes/sodium_compat/src/Core/Base64/Common.php',
	'wp-includes/SimplePie/Author.php',
	'wp-includes/SimplePie/Cache.php',
	'wp-includes/SimplePie/Caption.php',
	'wp-includes/SimplePie/Category.php',
	'wp-includes/SimplePie/Copyright.php',
	'wp-includes/SimplePie/Core.php',
	'wp-includes/SimplePie/Credit.php',
	'wp-includes/SimplePie/Enclosure.php',
	'wp-includes/SimplePie/Exception.php',
	'wp-includes/SimplePie/File.php',
	'wp-includes/SimplePie/gzdecode.php',
	'wp-includes/SimplePie/IRI.php',
	'wp-includes/SimplePie/Item.php',
	'wp-includes/SimplePie/Locator.php',
	'wp-includes/SimplePie/Misc.php',
	'wp-includes/SimplePie/Parser.php',
	'wp-includes/SimplePie/Rating.php',
	'wp-includes/SimplePie/Registry.php',
	'wp-includes/SimplePie/Restriction.php',
	'wp-includes/SimplePie/Sanitize.php',
	'wp-includes/SimplePie/Source.php',
	// 6.7 - directories
	'wp-includes/SimplePie/Cache/',
	'wp-includes/SimplePie/Content/',
	'wp-includes/SimplePie/Decode/',
	'wp-includes/SimplePie/HTTP/',
	'wp-includes/SimplePie/Net/',
	'wp-includes/SimplePie/Parse/',
	'wp-includes/SimplePie/XML/',
	// 6.8
	'wp-includes/blocks/post-content/editor.css',
	'wp-includes/blocks/post-content/editor.min.css',
	'wp-includes/blocks/post-content/editor-rtl.css',
	'wp-includes/blocks/post-content/editor-rtl.min.css',
	'wp-includes/blocks/post-template/editor.css',
	'wp-includes/blocks/post-template/editor.min.css',
	'wp-includes/blocks/post-template/editor-rtl.css',
	'wp-includes/blocks/post-template/editor-rtl.min.css',
	'wp-includes/js/dist/undo-manager.js',
	'wp-includes/js/dist/undo-manager.min.js',
	'wp-includes/js/dist/fields.min.js',
	'wp-includes/js/dist/fields.js',
);

/**
 * Stores Requests files to be preloaded and deleted.
 *
 * For classes/interfaces, use the class/interface name
 * as the array key.
 *
 * All other files/directories should not have a key.
 *
 * @since 6.2.0
 *
 * @global string[] $_old_requests_files
 * @var string[]
 * @name $_old_requests_files
 */
global $_old_requests_files;

$_old_requests_files = array(
	// Interfaces.
	'Requests_Auth'                              => 'wp-includes/Requests/Auth.php',
	'Requests_Hooker'                            => 'wp-includes/Requests/Hooker.php',
	'Requests_Proxy'                             => 'wp-includes/Requests/Proxy.php',
	'Requests_Transport'                         => 'wp-includes/Requests/Transport.php',

// Classes.
	'Requests_Auth_Basic'                        => 'wp-includes/Requests/Auth/Basic.php',
	'Requests_Cookie_Jar'                        => 'wp-includes/Requests/Cookie/Jar.php',
	'Requests_Exception_HTTP'                    => 'wp-includes/Requests/Exception/HTTP.php',
	'Requests_Exception_Transport'               => 'wp-includes/Requests/Exception/Transport.php',
	'Requests_Exception_HTTP_304'                => 'wp-includes/Requests/Exception/HTTP/304.php',
	'Requests_Exception_HTTP_305'                => 'wp-includes/Requests/Exception/HTTP/305.php',
	'Requests_Exception_HTTP_306'                => 'wp-includes/Requests/Exception/HTTP/306.php',
	'Requests_Exception_HTTP_400'                => 'wp-includes/Requests/Exception/HTTP/400.php',
	'Requests_Exception_HTTP_401'                => 'wp-includes/Requests/Exception/HTTP/401.php',
	'Requests_Exception_HTTP_402'                => 'wp-includes/Requests/Exception/HTTP/402.php',
	'Requests_Exception_HTTP_403'                => 'wp-includes/Requests/Exception/HTTP/403.php',
	'Requests_Exception_HTTP_404'                => 'wp-includes/Requests/Exception/HTTP/404.php',
	'Requests_Exception_HTTP_405'                => 'wp-includes/Requests/Exception/HTTP/405.php',
	'Requests_Exception_HTTP_406'                => 'wp-includes/Requests/Exception/HTTP/406.php',
	'Requests_Exception_HTTP_407'                => 'wp-includes/Requests/Exception/HTTP/407.php',
	'Requests_Exception_HTTP_408'                => 'wp-includes/Requests/Exception/HTTP/408.php',
	'Requests_Exception_HTTP_409'                => 'wp-includes/Requests/Exception/HTTP/409.php',
	'Requests_Exception_HTTP_410'                => 'wp-includes/Requests/Exception/HTTP/410.php',
	'Requests_Exception_HTTP_411'                => 'wp-includes/Requests/Exception/HTTP/411.php',
	'Requests_Exception_HTTP_412'                => 'wp-includes/Requests/Exception/HTTP/412.php',
	'Requests_Exception_HTTP_413'                => 'wp-includes/Requests/Exception/HTTP/413.php',
	'Requests_Exception_HTTP_414'                => 'wp-includes/Requests/Exception/HTTP/414.php',
	'Requests_Exception_HTTP_415'                => 'wp-includes/Requests/Exception/HTTP/415.php',
	'Requests_Exception_HTTP_416'                => 'wp-includes/Requests/Exception/HTTP/416.php',
	'Requests_Exception_HTTP_417'                => 'wp-includes/Requests/Exception/HTTP/417.php',
	'Requests_Exception_HTTP_418'                => 'wp-includes/Requests/Exception/HTTP/418.php',
	'Requests_Exception_HTTP_428'                => 'wp-includes/Requests/Exception/HTTP/428.php',
	'Requests_Exception_HTTP_429'                => 'wp-includes/Requests/Exception/HTTP/429.php',
	'Requests_Exception_HTTP_431'                => 'wp-includes/Requests/Exception/HTTP/431.php',
	'Requests_Exception_HTTP_500'                => 'wp-includes/Requests/Exception/HTTP/500.php',
	'Requests_Exception_HTTP_501'                => 'wp-includes/Requests/Exception/HTTP/501.php',
	'Requests_Exception_HTTP_502'                => 'wp-includes/Requests/Exception/HTTP/502.php',
	'Requests_Exception_HTTP_503'                => 'wp-includes/Requests/Exception/HTTP/503.php',
	'Requests_Exception_HTTP_504'                => 'wp-includes/Requests/Exception/HTTP/504.php',
	'Requests_Exception_HTTP_505'                => 'wp-includes/Requests/Exception/HTTP/505.php',
	'Requests_Exception_HTTP_511'                => 'wp-includes/Requests/Exception/HTTP/511.php',
	'Requests_Exception_HTTP_Unknown'            => 'wp-includes/Requests/Exception/HTTP/Unknown.php',
	'Requests_Exception_Transport_cURL'          => 'wp-includes/Requests/Exception/Transport/cURL.php',
	'Requests_Proxy_HTTP'                        => 'wp-includes/Requests/Proxy/HTTP.php',
	'Requests_Response_Headers'                  => 'wp-includes/Requests/Response/Headers.php',
	'Requests_Transport_cURL'                    => 'wp-includes/Requests/Transport/cURL.php',
	'Requests_Transport_fsockopen'               => 'wp-includes/Requests/Transport/fsockopen.php',
	'Requests_Utility_CaseInsensitiveDictionary' => 'wp-includes/Requests/Utility/CaseInsensitiveDictionary.php',
	'Requests_Utility_FilteredIterator'          => 'wp-includes/Requests/Utility/FilteredIterator.php',
	'Requests_Cookie'                            => 'wp-includes/Requests/Cookie.php',
	'Requests_Exception'                         => 'wp-includes/Requests/Exception.php',
	'Requests_Hooks'                             => 'wp-includes/Requests/Hooks.php',
	'Requests_IDNAEncoder'                       => 'wp-includes/Requests/IDNAEncoder.php',
	'Requests_IPv6'                              => 'wp-includes/Requests/IPv6.php',
	'Requests_IRI'                               => 'wp-includes/Requests/IRI.php',
	'Requests_Response'                          => 'wp-includes/Requests/Response.php',
	'Requests_SSL'                               => 'wp-includes/Requests/SSL.php',
	'Requests_Session'                           => 'wp-includes/Requests/Session.php',

// Directories.
	'wp-includes/Requests/Auth/',
	'wp-includes/Requests/Cookie/',
	'wp-includes/Requests/Exception/HTTP/',
	'wp-includes/Requests/Exception/Transport/',
	'wp-includes/Requests/Exception/',
	'wp-includes/Requests/Proxy/',
	'wp-includes/Requests/Response/',
	'wp-includes/Requests/Transport/',
	'wp-includes/Requests/Utility/',
);

/**
 * Stores new files in wp-content to copy
 *
 * The contents of this array indicate any new bundled plugins/themes which
 * should be installed with the WordPress Upgrade. These items will not be
 * re-installed in future upgrades, this behavior is controlled by the
 * introduced version present here being older than the current installed version.
 *
 * The content of this array should follow the following format:
 * Filename (relative to wp-content) => Introduced version
 * Directories should be noted by suffixing it with a trailing slash (/)
 *
 * @since 3.2.0
 * @since 4.7.0 New themes were not automatically installed for 4.4-4.6 on
 *              upgrade. New themes are now installed again. To disable new
 *              themes from being installed on upgrade, explicitly define
 *              CORE_UPGRADE_SKIP_NEW_BUNDLED as true.
 * @global string[] $_new_bundled_files
 * @var string[]
 * @name $_new_bundled_files
 */
global $_new_bundled_files;

$_new_bundled_files = array(
	'plugins/akismet/'          => '2.0',
	'themes/twentyten/'         => '3.0',
	'themes/twentyeleven/'      => '3.2',
	'themes/twentytwelve/'      => '3.5',
	'themes/twentythirteen/'    => '3.6',
	'themes/twentyfourteen/'    => '3.8',
	'themes/twentyfifteen/'     => '4.1',
	'themes/twentysixteen/'     => '4.4',
	'themes/twentyseventeen/'   => '4.7',
	'themes/twentynineteen/'    => '5.0',
	'themes/twentytwenty/'      => '5.3',
	'themes/twentytwentyone/'   => '5.6',
	'themes/twentytwentytwo/'   => '5.9',
	'themes/twentytwentythree/' => '6.1',
	'themes/twentytwentyfour/'  => '6.4',
	'themes/twentytwentyfive/'  => '6.7',
);

/**
 * Upgrades the core of WordPress.
 *
 * This will create a .maintenance file at the base of the WordPress directory
 * to ensure that people can not access the website, when the files are being
 * copied to their locations.
 *
 * The files in the `$_old_files` list will be removed and the new files
 * copied from the zip file after the database is upgraded.
 *
 * The files in the `$_new_bundled_files` list will be added to the installation
 * if the version is greater than or equal to the old version being upgraded.
 *
 * The steps for the upgrader for after the new release is downloaded and
 * unzipped is:
 *
 *   1. Test unzipped location for select files to ensure that unzipped worked.
 *   2. Create the .maintenance file in current WordPress base.
 *   3. Copy new WordPress directory over old WordPress files.
 *   4. Upgrade WordPress to new version.
 *      1. Copy all files/folders other than wp-content
 *      2. Copy any language files to `WP_LANG_DIR` (which may differ from `WP_CONTENT_DIR`
 *      3. Copy any new bundled themes/plugins to their respective locations
 *   5. Delete new WordPress directory path.
 *   6. Delete .maintenance file.
 *   7. Remove old files.
 *   8. Delete 'update_core' option.
 *
 * There are several areas of failure. For instance if PHP times out before step
 * 6, then you will not be able to access any portion of your site. Also, since
 * the upgrade will not continue where it left off, you will not be able to
 * automatically remove old files and remove the 'update_core' option. This
 * isn't that bad.
 *
 * If the copy of the new WordPress over the old fails, then the worse is that
 * the new WordPress directory will remain.
 *
 * If it is assumed that every file will be copied over, including plugins and
 * themes, then if you edit the default theme, you should rename it, so that
 * your changes remain.
 *
 * @since 2.7.0
 *
 * @global WP_Filesystem_Base $wp_filesystem          WordPress filesystem subclass.
 * @global string[]           $_old_files
 * @global string[]           $_old_requests_files
 * @global string[]           $_new_bundled_files
 * @global wpdb               $wpdb                   WordPress database abstraction object.
 *
 * @param string $from New release unzipped path.
 * @param string $to   Path to old WordPress installation.
 * @return string|WP_Error New WordPress version on success, WP_Error on failure.
 */
function update_core( $from, $to ) {
	global $wp_filesystem, $_old_files, $_old_requests_files, $_new_bundled_files, $wpdb;

/*
	 * Give core update script an additional 300 seconds (5 minutes)
	 * to finish updating large files when running on slower servers.
	 */
	if ( function_exists( 'set_time_limit' ) ) {
		set_time_limit( 300 );
	}

/*
	 * Merge the old Requests files and directories into the `$_old_files`.
	 * Then preload these Requests files first, before the files are deleted
	 * and replaced to ensure the code is in memory if needed.
	 */
	$_old_files = array_merge( $_old_files, array_values( $_old_requests_files ) );
	_preload_old_requests_classes_and_interfaces( $to );

/**
	 * Filters feedback messages displayed during the core update process.
	 *
	 * The filter is first evaluated after the zip file for the latest version
	 * has been downloaded and unzipped. It is evaluated five more times during
	 * the process:
	 *
	 * 1. Before WordPress begins the core upgrade process.
	 * 2. Before Maintenance Mode is enabled.
	 * 3. Before WordPress begins copying over the necessary files.
	 * 4. Before Maintenance Mode is disabled.
	 * 5. Before the database is upgraded.
	 *
	 * @since 2.5.0
	 *
	 * @param string $feedback The core update feedback messages.
	 */
	apply_filters( 'update_feedback', __( 'Verifying the unpacked files&#8230;' ) );

// Confidence check the unzipped distribution.
	$distro = '';
	$roots  = array( '/wordpress/', '/wordpress-mu/' );

foreach ( $roots as $root ) {
		if ( $wp_filesystem->exists( $from . $root . 'readme.html' )
			&& $wp_filesystem->exists( $from . $root . 'wp-includes/version.php' )
		) {
			$distro = $root;
			break;
		}
	}

if ( ! $distro ) {
		$wp_filesystem->delete( $from, true );

return new WP_Error( 'insane_distro', __( 'The update could not be unpacked' ) );
	}

/*
	 * Import $wp_version, $required_php_version, $required_php_extensions, and $required_mysql_version from the new version.
	 * DO NOT globalize any variables imported from `version-current.php` in this function.
	 *
	 * BC Note: $wp_filesystem->wp_content_dir() returned unslashed pre-2.8.
	 */
	$versions_file = trailingslashit( $wp_filesystem->wp_content_dir() ) . 'upgrade/version-current.php';

if ( ! $wp_filesystem->copy( $from . $distro . 'wp-includes/version.php', $versions_file ) ) {
		$wp_filesystem->delete( $from, true );

return new WP_Error(
			'copy_failed_for_version_file',
			__( 'The update cannot be installed because some files could not be copied. This is usually due to inconsistent file permissions.' ),
			'wp-includes/version.php'
		);
	}

$wp_filesystem->chmod( $versions_file, FS_CHMOD_FILE );

/*
	 * `wp_opcache_invalidate()` only exists in WordPress 5.5 or later,
	 * so don't run it when upgrading from older versions.
	 */
	if ( function_exists( 'wp_opcache_invalidate' ) ) {
		wp_opcache_invalidate( $versions_file );
	}

require WP_CONTENT_DIR . '/upgrade/version-current.php';
	$wp_filesystem->delete( $versions_file );

$php_version    = PHP_VERSION;
	$mysql_version  = $wpdb->db_version();
	$old_wp_version = $GLOBALS['wp_version']; // The version of WordPress we're updating from.
	/*
	 * Note: str_contains() is not used here, as this file is included
	 * when updating from older WordPress versions, in which case
	 * the polyfills from wp-includes/compat.php may not be available.
	 */
	$development_build = ( false !== strpos( $old_wp_version . $wp_version, '-' ) ); // A dash in the version indicates a development release.
	$php_compat        = version_compare( $php_version, $required_php_version, '>=' );

if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) ) {
		$mysql_compat = true;
	} else {
		$mysql_compat = version_compare( $mysql_version, $required_mysql_version, '>=' );
	}

if ( ! $mysql_compat || ! $php_compat ) {
		$wp_filesystem->delete( $from, true );
	}

$php_update_message = '';

if ( function_exists( 'wp_get_update_php_url' ) ) {
		$php_update_message = '</p><p>' . sprintf(
			/* translators: %s: URL to Update PHP page. */
			__( '<a href="%s">Learn more about updating PHP</a>.' ),
			esc_url( wp_get_update_php_url() )
		);

if ( function_exists( 'wp_get_update_php_annotation' ) ) {
			$annotation = wp_get_update_php_annotation();

if ( $annotation ) {
				$php_update_message .= '</p><p><em>' . $annotation . '</em>';
			}
		}
	}

if ( ! $mysql_compat && ! $php_compat ) {
		return new WP_Error(
			'php_mysql_not_compatible',
			sprintf(
				/* translators: 1: WordPress version number, 2: Minimum required PHP version number, 3: Minimum required MySQL version number, 4: Current PHP version number, 5: Current MySQL version number. */
				__( 'The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher and MySQL version %3$s or higher. You are running PHP version %4$s and MySQL version %5$s.' ),
				$wp_version,
				$required_php_version,
				$required_mysql_version,
				$php_version,
				$mysql_version
			) . $php_update_message
		);
	} elseif ( ! $php_compat ) {
		return new WP_Error(
			'php_not_compatible',
			sprintf(
				/* translators: 1: WordPress version number, 2: Minimum required PHP version number, 3: Current PHP version number. */
				__( 'The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher. You are running version %3$s.' ),
				$wp_version,
				$required_php_version,
				$php_version
			) . $php_update_message
		);
	} elseif ( ! $mysql_compat ) {
		return new WP_Error(
			'mysql_not_compatible',
			sprintf(
				/* translators: 1: WordPress version number, 2: Minimum required MySQL version number, 3: Current MySQL version number. */
				__( 'The update cannot be installed because WordPress %1$s requires MySQL version %2$s or higher. You are running version %3$s.' ),
				$wp_version,
				$required_mysql_version,
				$mysql_version
			)
		);
	}

if ( isset( $required_php_extensions ) && is_array( $required_php_extensions ) ) {
		$missing_extensions = new WP_Error();

foreach ( $required_php_extensions as $extension ) {
			if ( extension_loaded( $extension ) ) {
				continue;
			}

$missing_extensions->add(
				"php_not_compatible_{$extension}",
				sprintf(
					/* translators: 1: WordPress version number, 2: The PHP extension name needed. */
					__( 'The update cannot be installed because WordPress %1$s requires the %2$s PHP extension.' ),
					$wp_version,
					$extension
				)
			);
		}

// Add a warning when required PHP extensions are missing.
		if ( ! empty( $missing_extensions->errors ) ) {
			return $missing_extensions;
		}
	}

/** This filter is documented in wp-admin/includes/update-core.php */
	apply_filters( 'update_feedback', __( 'Preparing to install the latest version&#8230;' ) );

/*
	 * Don't copy wp-content, we'll deal with that below.
	 * We also copy version.php last so failed updates report their old version.
	 */
	$skip              = array( 'wp-content', 'wp-includes/version.php' );
	$check_is_writable = array();

// Check to see which files don't really need updating - only available for 3.7 and higher.
	if ( function_exists( 'get_core_checksums' ) ) {
		// Find the local version of the working directory.
		$working_dir_local = WP_CONTENT_DIR . '/upgrade/' . basename( $from ) . $distro;

$checksums = get_core_checksums( $wp_version, isset( $wp_local_package ) ? $wp_local_package : 'en_US' );

if ( is_array( $checksums ) && isset( $checksums[ $wp_version ] ) ) {
			$checksums = $checksums[ $wp_version ]; // Compat code for 3.7-beta2.
		}

if ( is_array( $checksums ) ) {
			foreach ( $checksums as $file => $checksum ) {
				/*
				 * Note: str_starts_with() is not used here, as this file is included
				 * when updating from older WordPress versions, in which case
				 * the polyfills from wp-includes/compat.php may not be available.
				 */
				if ( 'wp-content' === substr( $file, 0, 10 ) ) {
					continue;
				}

if ( ! file_exists( ABSPATH . $file ) ) {
					continue;
				}

if ( ! file_exists( $working_dir_local . $file ) ) {
					continue;
				}

if ( '.' === dirname( $file )
					&& in_array( pathinfo( $file, PATHINFO_EXTENSION ), array( 'html', 'txt' ), true )
				) {
					continue;
				}

if ( md5_file( ABSPATH . $file ) === $checksum ) {
					$skip[] = $file;
				} else {
					$check_is_writable[ $file ] = ABSPATH . $file;
				}
			}
		}
	}

// If we're using the direct method, we can predict write failures that are due to permissions.
	if ( $check_is_writable && 'direct' === $wp_filesystem->method ) {
		$files_writable = array_filter( $check_is_writable, array( $wp_filesystem, 'is_writable' ) );

if ( $files_writable !== $check_is_writable ) {
			$files_not_writable = array_diff_key( $check_is_writable, $files_writable );

foreach ( $files_not_writable as $relative_file_not_writable => $file_not_writable ) {
				// If the writable check failed, chmod file to 0644 and try again, same as copy_dir().
				$wp_filesystem->chmod( $file_not_writable, FS_CHMOD_FILE );

if ( $wp_filesystem->is_writable( $file_not_writable ) ) {
					unset( $files_not_writable[ $relative_file_not_writable ] );
				}
			}

// Store package-relative paths (the key) of non-writable files in the WP_Error object.
			$error_data = version_compare( $old_wp_version, '3.7-beta2', '>' ) ? array_keys( $files_not_writable ) : '';

if ( $files_not_writable ) {
				return new WP_Error(
					'files_not_writable',
					__( 'The update cannot be installed because your site is unable to copy some files. This is usually due to inconsistent file permissions.' ),
					implode( ', ', $error_data )
				);
			}
		}
	}

/** This filter is documented in wp-admin/includes/update-core.php */
	apply_filters( 'update_feedback', __( 'Enabling Maintenance mode&#8230;' ) );

// Create maintenance file to signal that we are upgrading.
	$maintenance_string = '<?php $upgrading = ' . time() . '; ?>';
	$maintenance_file   = $to . '.maintenance';
	$wp_filesystem->delete( $maintenance_file );
	$wp_filesystem->put_contents( $maintenance_file, $maintenance_string, FS_CHMOD_FILE );

/** This filter is documented in wp-admin/includes/update-core.php */
	apply_filters( 'update_feedback', __( 'Copying the required files&#8230;' ) );

// Copy new versions of WP files into place.
	$result = copy_dir( $from . $distro, $to, $skip );

if ( is_wp_error( $result ) ) {
		$result = new WP_Error(
			$result->get_error_code(),
			$result->get_error_message(),
			substr( $result->get_error_data(), strlen( $to ) )
		);
	}

// Since we know the core files have copied over, we can now copy the version file.
	if ( ! is_wp_error( $result ) ) {
		if ( ! $wp_filesystem->copy( $from . $distro . 'wp-includes/version.php', $to . 'wp-includes/version.php', true /* overwrite */ ) ) {
			$wp_filesystem->delete( $from, true );
			$result = new WP_Error(
				'copy_failed_for_version_file',
				__( 'The update cannot be installed because your site is unable to copy some files. This is usually due to inconsistent file permissions.' ),
				'wp-includes/version.php'
			);
		}

$wp_filesystem->chmod( $to . 'wp-includes/version.php', FS_CHMOD_FILE );

/*
		 * `wp_opcache_invalidate()` only exists in WordPress 5.5 or later,
		 * so don't run it when upgrading from older versions.
		 */
		if ( function_exists( 'wp_opcache_invalidate' ) ) {
			wp_opcache_invalidate( $to . 'wp-includes/version.php' );
		}
	}

// Check to make sure everything copied correctly, ignoring the contents of wp-content.
	$skip   = array( 'wp-content' );
	$failed = array();

if ( isset( $checksums ) && is_array( $checksums ) ) {
		foreach ( $checksums as $file => $checksum ) {
			/*
			 * Note: str_starts_with() is not used here, as this file is included
			 * when updating from older WordPress versions, in which case
			 * the polyfills from wp-includes/compat.php may not be available.
			 */
			if ( 'wp-content' === substr( $file, 0, 10 ) ) {
				continue;
			}

if ( ! file_exists( $working_dir_local . $file ) ) {
				continue;
			}

if ( '.' === dirname( $file )
				&& in_array( pathinfo( $file, PATHINFO_EXTENSION ), array( 'html', 'txt' ), true )
			) {
				$skip[] = $file;
				continue;
			}

if ( file_exists( ABSPATH . $file ) && md5_file( ABSPATH . $file ) === $checksum ) {
				$skip[] = $file;
			} else {
				$failed[] = $file;
			}
		}
	}

// Some files didn't copy properly.
	if ( ! empty( $failed ) ) {
		$total_size = 0;

foreach ( $failed as $file ) {
			if ( file_exists( $working_dir_local . $file ) ) {
				$total_size += filesize( $working_dir_local . $file );
			}
		}

/*
		 * If we don't have enough free space, it isn't worth trying again.
		 * Unlikely to be hit due to the check in unzip_file().
		 */
		$available_space = function_exists( 'disk_free_space' ) ? @disk_free_space( ABSPATH ) : false;

if ( $available_space && $total_size >= $available_space ) {
			$result = new WP_Error( 'disk_full', __( 'There is not enough free disk space to complete the update.' ) );
		} else {
			$result = copy_dir( $from . $distro, $to, $skip );

if ( is_wp_error( $result ) ) {
				$result = new WP_Error(
					$result->get_error_code() . '_retry',
					$result->get_error_message(),
					substr( $result->get_error_data(), strlen( $to ) )
				);
			}
		}
	}

/*
	 * Custom content directory needs updating now.
	 * Copy languages.
	 */
	if ( ! is_wp_error( $result ) && $wp_filesystem->is_dir( $from . $distro . 'wp-content/languages' ) ) {
		if ( WP_LANG_DIR !== ABSPATH . WPINC . '/languages' || @is_dir( WP_LANG_DIR ) ) {
			$lang_dir = WP_LANG_DIR;
		} else {
			$lang_dir = WP_CONTENT_DIR . '/languages';
		}
		/*
		 * Note: str_starts_with() is not used here, as this file is included
		 * when updating from older WordPress versions, in which case
		 * the polyfills from wp-includes/compat.php may not be available.
		 */
		// Check if the language directory exists first.
		if ( ! @is_dir( $lang_dir ) && 0 === strpos( $lang_dir, ABSPATH ) ) {
			// If it's within the ABSPATH we can handle it here, otherwise they're out of luck.
			$wp_filesystem->mkdir( $to . str_replace( ABSPATH, '', $lang_dir ), FS_CHMOD_DIR );
			clearstatcache(); // For FTP, need to clear the stat cache.
		}

if ( @is_dir( $lang_dir ) ) {
			$wp_lang_dir = $wp_filesystem->find_folder( $lang_dir );

if ( $wp_lang_dir ) {
				$result = copy_dir( $from . $distro . 'wp-content/languages/', $wp_lang_dir );

if ( is_wp_error( $result ) ) {
					$result = new WP_Error(
						$result->get_error_code() . '_languages',
						$result->get_error_message(),
						substr( $result->get_error_data(), strlen( $wp_lang_dir ) )
					);
				}
			}
		}
	}

/** This filter is documented in wp-admin/includes/update-core.php */
	apply_filters( 'update_feedback', __( 'Disabling Maintenance mode&#8230;' ) );

// Remove maintenance file, we're done with potential site-breaking changes.
	$wp_filesystem->delete( $maintenance_file );

/*
	 * 3.5 -> 3.5+ - an empty twentytwelve directory was created upon upgrade to 3.5 for some users,
	 * preventing installation of Twenty Twelve.
	 */
	if ( '3.5' === $old_wp_version ) {
		if ( is_dir( WP_CONTENT_DIR . '/themes/twentytwelve' )
			&& ! file_exists( WP_CONTENT_DIR . '/themes/twentytwelve/style.css' )
		) {
			$wp_filesystem->delete( $wp_filesystem->wp_themes_dir() . 'twentytwelve/' );
		}
	}

/*
	 * Copy new bundled plugins & themes.
	 * This gives us the ability to install new plugins & themes bundled with
	 * future versions of WordPress whilst avoiding the re-install upon upgrade issue.
	 * $development_build controls us overwriting bundled themes and plugins when a non-stable release is being updated.
	 */
	if ( ! is_wp_error( $result )
		&& ( ! defined( 'CORE_UPGRADE_SKIP_NEW_BUNDLED' ) || ! CORE_UPGRADE_SKIP_NEW_BUNDLED )
	) {
		foreach ( (array) $_new_bundled_files as $file => $introduced_version ) {
			// If a $development_build or if $introduced version is greater than what the site was previously running.
			if ( $development_build || version_compare( $introduced_version, $old_wp_version, '>' ) ) {
				$directory = ( '/' === $file[ strlen( $file ) - 1 ] );

list( $type, $filename ) = explode( '/', $file, 2 );

// Check to see if the bundled items exist before attempting to copy them.
				if ( ! $wp_filesystem->exists( $from . $distro . 'wp-content/' . $file ) ) {
					continue;
				}

if ( 'plugins' === $type ) {
					$dest = $wp_filesystem->wp_plugins_dir();
				} elseif ( 'themes' === $type ) {
					// Back-compat, ::wp_themes_dir() did not return trailingslash'd pre-3.2.
					$dest = trailingslashit( $wp_filesystem->wp_themes_dir() );
				} else {
					continue;
				}

if ( ! $directory ) {
					if ( ! $development_build && $wp_filesystem->exists( $dest . $filename ) ) {
						continue;
					}

if ( ! $wp_filesystem->copy( $from . $distro . 'wp-content/' . $file, $dest . $filename, FS_CHMOD_FILE ) ) {
						$result = new WP_Error( "copy_failed_for_new_bundled_$type", __( 'Could not copy file.' ), $dest . $filename );
					}
				} else {
					if ( ! $development_build && $wp_filesystem->is_dir( $dest . $filename ) ) {
						continue;
					}

$wp_filesystem->mkdir( $dest . $filename, FS_CHMOD_DIR );
					$_result = copy_dir( $from . $distro . 'wp-content/' . $file, $dest . $filename );

/*
					 * If an error occurs partway through this final step,
					 * keep the error flowing through, but keep the process going.
					 */
					if ( is_wp_error( $_result ) ) {
						if ( ! is_wp_error( $result ) ) {
							$result = new WP_Error();
						}

$result->add(
							$_result->get_error_code() . "_$type",
							$_result->get_error_message(),
							substr( $_result->get_error_data(), strlen( $dest ) )
						);
					}
				}
			}
		} // End foreach.
	}

// Handle $result error from the above blocks.
	if ( is_wp_error( $result ) ) {
		$wp_filesystem->delete( $from, true );

return $result;
	}

// Remove old files.
	foreach ( $_old_files as $old_file ) {
		$old_file = $to . $old_file;

if ( ! $wp_filesystem->exists( $old_file ) ) {
			continue;
		}

// If the file isn't deleted, try writing an empty string to the file instead.
		if ( ! $wp_filesystem->delete( $old_file, true ) && $wp_filesystem->is_file( $old_file ) ) {
			$wp_filesystem->put_contents( $old_file, '' );
		}
	}

// Remove any Genericons example.html's from the filesystem.
	_upgrade_422_remove_genericons();

// Deactivate the REST API plugin if its version is 2.0 Beta 4 or lower.
	_upgrade_440_force_deactivate_incompatible_plugins();

// Deactivate incompatible plugins.
	_upgrade_core_deactivate_incompatible_plugins();

// Upgrade DB with separate request.
	/** This filter is documented in wp-admin/includes/update-core.php */
	apply_filters( 'update_feedback', __( 'Upgrading database&#8230;' ) );

$db_upgrade_url = admin_url( 'upgrade.php?step=upgrade_db' );
	wp_remote_post( $db_upgrade_url, array( 'timeout' => 60 ) );

// Clear the cache to prevent an update_option() from saving a stale db_version to the cache.
	wp_cache_flush();
	// Not all cache back ends listen to 'flush'.
	wp_cache_delete( 'alloptions', 'options' );

// Remove working directory.
	$wp_filesystem->delete( $from, true );

// Force refresh of update information.
	if ( function_exists( 'delete_site_transient' ) ) {
		delete_site_transient( 'update_core' );
	} else {
		delete_option( 'update_core' );
	}

/**
	 * Fires after WordPress core has been successfully updated.
	 *
	 * @since 3.3.0
	 *
	 * @param string $wp_version The current WordPress version.
	 */
	do_action( '_core_updated_successfully', $wp_version );

// Clear the option that blocks auto-updates after failures, now that we've been successful.
	if ( function_exists( 'delete_site_option' ) ) {
		delete_site_option( 'auto_core_update_failed' );
	}

return $wp_version;
}

/**
 * Preloads old Requests classes and interfaces.
 *
 * This function preloads the old Requests code into memory before the
 * upgrade process deletes the files. Why? Requests code is loaded into
 * memory via an autoloader, meaning when a class or interface is needed
 * If a request is in process, Requests could attempt to access code. If
 * the file is not there, a fatal error could occur. If the file was
 * replaced, the new code is not compatible with the old, resulting in
 * a fatal error. Preloading ensures the code is in memory before the
 * code is updated.
 *
 * @since 6.2.0
 *
 * @global string[]           $_old_requests_files Requests files to be preloaded.
 * @global WP_Filesystem_Base $wp_filesystem       WordPress filesystem subclass.
 * @global string             $wp_version          The WordPress version string.
 *
 * @param string $to Path to old WordPress installation.
 */
function _preload_old_requests_classes_and_interfaces( $to ) {
	global $_old_requests_files, $wp_filesystem, $wp_version;

/*
	 * Requests was introduced in WordPress 4.6.
	 *
	 * Skip preloading if the website was previously using
	 * an earlier version of WordPress.
	 */
	if ( version_compare( $wp_version, '4.6', '<' ) ) {
		return;
	}

if ( ! defined( 'REQUESTS_SILENCE_PSR0_DEPRECATIONS' ) ) {
		define( 'REQUESTS_SILENCE_PSR0_DEPRECATIONS', true );
	}

foreach ( $_old_requests_files as $name => $file ) {
		// Skip files that aren't interfaces or classes.
		if ( is_int( $name ) ) {
			continue;
		}

// Skip if it's already loaded.
		if ( class_exists( $name ) || interface_exists( $name ) ) {
			continue;
		}

// Skip if the file is missing.
		if ( ! $wp_filesystem->is_file( $to . $file ) ) {
			continue;
		}

require_once $to . $file;
	}
}

/**
 * Redirect to the About WordPress page after a successful upgrade.
 *
 * This function is only needed when the existing installation is older than 3.4.0.
 *
 * @since 3.3.0
 *
 * @global string $wp_version The WordPress version string.
 * @global string $pagenow    The filename of the current screen.
 * @global string $action
 *
 * @param string $new_version
 */
function _redirect_to_about_wordpress( $new_version ) {
	global $wp_version, $pagenow, $action;

if ( version_compare( $wp_version, '3.4-RC1', '>=' ) ) {
		return;
	}

// Ensure we only run this on the update-core.php page. The Core_Upgrader may be used in other contexts.
	if ( 'update-core.php' !== $pagenow ) {
		return;
	}

if ( 'do-core-upgrade' !== $action && 'do-core-reinstall' !== $action ) {
		return;
	}

// Load the updated default text localization domain for new strings.
	load_default_textdomain();

// See do_core_upgrade().
	show_message( __( 'WordPress updated successfully.' ) );

// self_admin_url() won't exist when upgrading from <= 3.0, so relative URLs are intentional.
	show_message(
		'<span class="hide-if-no-js">' . sprintf(
			/* translators: 1: WordPress version, 2: URL to About screen. */
			__( 'Welcome to WordPress %1$s. You will be redirected to the About WordPress screen. If not, click <a href="%2$s">here</a>.' ),
			$new_version,
			'about.php?updated'
		) . '</span>'
	);
	show_message(
		'<span class="hide-if-js">' . sprintf(
			/* translators: 1: WordPress version, 2: URL to About screen. */
			__( 'Welcome to WordPress %1$s. <a href="%2$s">Learn more</a>.' ),
			$new_version,
			'about.php?updated'
		) . '</span>'
	);
	echo '</div>';
	?>
<script type="text/javascript">
window.location = 'about.php?updated';
</script>
	<?php

// Include admin-footer.php and exit.
	require_once ABSPATH . 'wp-admin/admin-footer.php';
	exit;
}

/**
 * Cleans up Genericons example files.
 *
 * @since 4.2.2
 *
 * @global string[]           $wp_theme_directories
 * @global WP_Filesystem_Base $wp_filesystem
 */
function _upgrade_422_remove_genericons() {
	global $wp_theme_directories, $wp_filesystem;

// A list of the affected files using the filesystem absolute paths.
	$affected_files = array();

// Themes.
	foreach ( $wp_theme_directories as $directory ) {
		$affected_theme_files = _upgrade_422_find_genericons_files_in_folder( $directory );
		$affected_files       = array_merge( $affected_files, $affected_theme_files );
	}

// Plugins.
	$affected_plugin_files = _upgrade_422_find_genericons_files_in_folder( WP_PLUGIN_DIR );
	$affected_files        = array_merge( $affected_files, $affected_plugin_files );

foreach ( $affected_files as $file ) {
		$gen_dir = $wp_filesystem->find_folder( trailingslashit( dirname( $file ) ) );

if ( empty( $gen_dir ) ) {
			continue;
		}

// The path when the file is accessed via WP_Filesystem may differ in the case of FTP.
		$remote_file = $gen_dir . basename( $file );

if ( ! $wp_filesystem->exists( $remote_file ) ) {
			continue;
		}

if ( ! $wp_filesystem->delete( $remote_file, false, 'f' ) ) {
			$wp_filesystem->put_contents( $remote_file, '' );
		}
	}
}

/**
 * Recursively find Genericons example files in a given folder.
 *
 * @ignore
 * @since 4.2.2
 *
 * @param string $directory Directory path. Expects trailingslashed.
 * @return string[]
 */
function _upgrade_422_find_genericons_files_in_folder( $directory ) {
	$directory = trailingslashit( $directory );
	$files     = array();

if ( file_exists( "{$directory}example.html" )
		/*
		 * Note: str_contains() is not used here, as this file is included
		 * when updating from older WordPress versions, in which case
		 * the polyfills from wp-includes/compat.php may not be available.
		 */
		&& false !== strpos( file_get_contents( "{$directory}example.html" ), '<title>Genericons</title>' )
	) {
		$files[] = "{$directory}example.html";
	}

$dirs = glob( $directory . '*', GLOB_ONLYDIR );
	$dirs = array_filter(
		$dirs,
		static function ( $dir ) {
			/*
			 * Skip any node_modules directories.
			 *
			 * Note: str_contains() is not used here, as this file is included
			 * when updating from older WordPress versions, in which case
			 * the polyfills from wp-includes/compat.php may not be available.
			 */
			return false === strpos( $dir, 'node_modules' );
		}
	);

if ( $dirs ) {
		foreach ( $dirs as $dir ) {
			$files = array_merge( $files, _upgrade_422_find_genericons_files_in_folder( $dir ) );
		}
	}

return $files;
}

/**
 * @ignore
 * @since 4.4.0
 */
function _upgrade_440_force_deactivate_incompatible_plugins() {
	if ( defined( 'REST_API_VERSION' ) && version_compare( REST_API_VERSION, '2.0-beta4', '<=' ) ) {
		deactivate_plugins( array( 'rest-api/plugin.php' ), true );
	}
}

/**
 * @access private
 * @ignore
 * @since 5.8.0
 * @since 5.9.0 The minimum compatible version of Gutenberg is 11.9.
 * @since 6.1.1 The minimum compatible version of Gutenberg is 14.1.
 * @since 6.4.0 The minimum compatible version of Gutenberg is 16.5.
 * @since 6.5.0 The minimum compatible version of Gutenberg is 17.6.
 */
function _upgrade_core_deactivate_incompatible_plugins() {
	if ( defined( 'GUTENBERG_VERSION' ) && version_compare( GUTENBERG_VERSION, '17.6', '<' ) ) {
		$deactivated_gutenberg['gutenberg'] = array(
			'plugin_name'         => 'Gutenberg',
			'version_deactivated' => GUTENBERG_VERSION,
			'version_compatible'  => '17.6',
		);
		if ( is_plugin_active_for_network( 'gutenberg/gutenberg.php' ) ) {
			$deactivated_plugins = get_site_option( 'wp_force_deactivated_plugins', array() );
			$deactivated_plugins = array_merge( $deactivated_plugins, $deactivated_gutenberg );
			update_site_option( 'wp_force_deactivated_plugins', $deactivated_plugins );
		} else {
			$deactivated_plugins = get_option( 'wp_force_deactivated_plugins', array() );
			$deactivated_plugins = array_merge( $deactivated_plugins, $deactivated_gutenberg );
			update_option( 'wp_force_deactivated_plugins', $deactivated_plugins, false );
		}
		deactivate_plugins( array( 'gutenberg/gutenberg.php' ), true );
	}
}

Nama File / Folder	Size	Action
962678	--	NONE
.htaccess	0.231KB	Edit File Delete File Rename
admin-filters.php	7.846KB	Edit File Delete File Rename
admin.php	3.543KB	Edit File Delete File Rename
class-automatic-upgrader-skin.php	3.577KB	Edit File Delete File Rename
class-bulk-plugin-upgrader-skin.php	2.529KB	Edit File Delete File Rename
class-bulk-theme-upgrader-skin.php	2.598KB	Edit File Delete File Rename
class-bulk-upgrader-skin.php	6.595KB	Edit File Delete File Rename
class-core-upgrader.php	14.835KB	Edit File Delete File Rename
class-custom-background.php	21.143KB	Edit File Delete File Rename
class-file-upload-upgrader.php	4.065KB	Edit File Delete File Rename
class-ftp-pure.php	5.299KB	Edit File Delete File Rename
class-ftp-sockets.php	8.28KB	Edit File Delete File Rename
class-ftp.php	26.729KB	Edit File Delete File Rename
class-language-pack-upgrader-skin.php	2.803KB	Edit File Delete File Rename
class-language-pack-upgrader.php	15.196KB	Edit File Delete File Rename
class-pclzip.php	192.085KB	Edit File Delete File Rename
class-plugin-installer-skin.php	11.771KB	Edit File Delete File Rename
class-plugin-upgrader-skin.php	3.201KB	Edit File Delete File Rename
class-plugin-upgrader.php	22.698KB	Edit File Delete File Rename
class-theme-upgrader-skin.php	4.078KB	Edit File Delete File Rename
class-theme-upgrader.php	26.076KB	Edit File Delete File Rename
class-walker-category-checklist.php	4.972KB	Edit File Delete File Rename
class-walker-nav-menu-checklist.php	5.496KB	Edit File Delete File Rename
class-walker-nav-menu-edit.php	13.848KB	Edit File Delete File Rename
class-wp-ajax-upgrader-skin.php	4.095KB	Edit File Delete File Rename
class-wp-application-passwords-list-table.php	6.786KB	Edit File Delete File Rename
class-wp-automatic-updater.php	60.451KB	Edit File Delete File Rename
class-wp-comments-list-table.php	32.281KB	Edit File Delete File Rename
class-wp-community-events.php	18.329KB	Edit File Delete File Rename
class-wp-debug-data.php	65.058KB	Edit File Delete File Rename
class-wp-filesystem-base.php	23.838KB	Edit File Delete File Rename
class-wp-filesystem-direct.php	17.718KB	Edit File Delete File Rename
class-wp-filesystem-ftpext.php	22.56KB	Edit File Delete File Rename
class-wp-filesystem-ftpsockets.php	18.046KB	Edit File Delete File Rename
class-wp-filesystem-ssh2.php	22.764KB	Edit File Delete File Rename
class-wp-importer.php	7.323KB	Edit File Delete File Rename
class-wp-internal-pointers.php	4.47KB	Edit File Delete File Rename
class-wp-links-list-table.php	9.024KB	Edit File Delete File Rename
class-wp-list-table-compat.php	1.462KB	Edit File Delete File Rename
class-wp-list-table.php	51.666KB	Edit File Delete File Rename
class-wp-media-list-table.php	25.292KB	Edit File Delete File Rename
class-wp-ms-sites-list-table.php	21.503KB	Edit File Delete File Rename
class-wp-ms-themes-list-table.php	27.771KB	Edit File Delete File Rename
class-wp-ms-users-list-table.php	15.351KB	Edit File Delete File Rename
class-wp-plugin-install-list-table.php	24.205KB	Edit File Delete File Rename
class-wp-plugins-list-table.php	56.432KB	Edit File Delete File Rename
class-wp-post-comments-list-table.php	1.419KB	Edit File Delete File Rename
class-wp-posts-list-table.php	62.711KB	Edit File Delete File Rename
class-wp-privacy-data-export-requests-list-table.php	5.433KB	Edit File Delete File Rename
class-wp-privacy-data-removal-requests-list-table.php	5.581KB	Edit File Delete File Rename
class-wp-privacy-requests-table.php	14.058KB	Edit File Delete File Rename
class-wp-screen.php	36.452KB	Edit File Delete File Rename
class-wp-site-health-auto-updates.php	14.001KB	Edit File Delete File Rename
class-wp-site-icon.php	6.264KB	Edit File Delete File Rename
class-wp-terms-list-table.php	20.686KB	Edit File Delete File Rename
class-wp-theme-install-list-table.php	15.233KB	Edit File Delete File Rename
class-wp-themes-list-table.php	10.106KB	Edit File Delete File Rename
class-wp-upgrader-skin.php	6.943KB	Edit File Delete File Rename
class-wp-upgrader-skins.php	1.442KB	Edit File Delete File Rename
class-wp-upgrader.php	46.884KB	Edit File Delete File Rename
class-wp-users-list-table.php	18.611KB	Edit File Delete File Rename
comment.php	5.978KB	Edit File Delete File Rename
credits.php	5.732KB	Edit File Delete File Rename
dashboard.php	68.076KB	Edit File Delete File Rename
deprecated.php	40.797KB	Edit File Delete File Rename
edit-tag-messages.php	1.443KB	Edit File Delete File Rename
error_log	39.507KB	Edit File Delete File Rename
export.php	24.966KB	Edit File Delete File Rename
file.php	95.868KB	Edit File Delete File Rename
image-edit.php	42.854KB	Edit File Delete File Rename
image.php	41.664KB	Edit File Delete File Rename
import.php	6.462KB	Edit File Delete File Rename
index.php	0KB	Edit File Delete File Rename
list-table.php	3.713KB	Edit File Delete File Rename
media.php	116.317KB	Edit File Delete File Rename
menu.php	9.393KB	Edit File Delete File Rename
meta-boxes.php	64.527KB	Edit File Delete File Rename
misc.php	44.71KB	Edit File Delete File Rename
ms-admin-filters.php	1.266KB	Edit File Delete File Rename
ms-deprecated.php	3.682KB	Edit File Delete File Rename
ms.php	33.514KB	Edit File Delete File Rename
nav-menu.php	47.892KB	Edit File Delete File Rename
network.php	26.363KB	Edit File Delete File Rename
noop.php	1.121KB	Edit File Delete File Rename
options.php	4.151KB	Edit File Delete File Rename
plugin-install.php	38.549KB	Edit File Delete File Rename
plugin.php	90.747KB	Edit File Delete File Rename
post.php	80.276KB	Edit File Delete File Rename
privacy-tools.php	32.678KB	Edit File Delete File Rename
revision.php	16.179KB	Edit File Delete File Rename
schema.php	41.862KB	Edit File Delete File Rename
screen.php	6.229KB	Edit File Delete File Rename
taxonomy.php	8.227KB	Edit File Delete File Rename
template.php	96.22KB	Edit File Delete File Rename
theme-install.php	6.826KB	Edit File Delete File Rename
theme.php	46.623KB	Edit File Delete File Rename
translation-install.php	10.815KB	Edit File Delete File Rename
update-core.php	68.502KB	Edit File Delete File Rename
update.php	33.63KB	Edit File Delete File Rename
upgrade.php	112.091KB	Edit File Delete File Rename
user.php	22.98KB	Edit File Delete File Rename
widgets.php	10.656KB	Edit File Delete File Rename