1<?php
2/**
3 * WordPress core upgrade functionality.
4 *
5 * Note: Newly introduced functions and methods cannot be used here.
6 * All functions must be present in the previous version being upgraded from
7 * as this file is used there too.
8 *
9 * @package WordPress
10 * @subpackage Administration
11 * @since 2.7.0
12 */
13
14/**
15 * Stores files to be deleted.
16 *
17 * Bundled theme files should not be included in this list.
18 *
19 * @since 2.7.0
20 *
21 * @global string[] $_old_files
22 * @var string[]
23 * @name $_old_files
24 */
25global $_old_files;
26
27$_old_files = array(
28 // 2.0
29 'wp-admin/import-b2.php',
30 'wp-admin/import-blogger.php',
31 'wp-admin/import-greymatter.php',
32 'wp-admin/import-livejournal.php',
33 'wp-admin/import-mt.php',
34 'wp-admin/import-rss.php',
35 'wp-admin/import-textpattern.php',
36 'wp-admin/quicktags.js',
37 'wp-images/fade-butt.png',
38 'wp-images/get-firefox.png',
39 'wp-images/header-shadow.png',
40 'wp-images/smilies',
41 'wp-images/wp-small.png',
42 'wp-images/wpminilogo.png',
43 'wp.php',
44 // 2.1
45 'wp-admin/edit-form-ajax-cat.php',
46 'wp-admin/execute-pings.php',
47 'wp-admin/inline-uploading.php',
48 'wp-admin/link-categories.php',
49 'wp-admin/list-manipulation.js',
50 'wp-admin/list-manipulation.php',
51 'wp-includes/comment-functions.php',
52 'wp-includes/feed-functions.php',
53 'wp-includes/functions-compat.php',
54 'wp-includes/functions-formatting.php',
55 'wp-includes/functions-post.php',
56 'wp-includes/js/dbx-key.js',
57 'wp-includes/links.php',
58 'wp-includes/pluggable-functions.php',
59 'wp-includes/template-functions-author.php',
60 'wp-includes/template-functions-category.php',
61 'wp-includes/template-functions-general.php',
62 'wp-includes/template-functions-links.php',
63 'wp-includes/template-functions-post.php',
64 'wp-includes/wp-l10n.php',
65 // 2.2
66 'wp-admin/cat-js.php',
67 'wp-includes/js/autosave-js.php',
68 'wp-includes/js/list-manipulation-js.php',
69 'wp-includes/js/wp-ajax-js.php',
70 // 2.3
71 'wp-admin/admin-db.php',
72 'wp-admin/cat.js',
73 'wp-admin/categories.js',
74 'wp-admin/custom-fields.js',
75 'wp-admin/dbx-admin-key.js',
76 'wp-admin/edit-comments.js',
77 'wp-admin/install-rtl.css',
78 'wp-admin/install.css',
79 'wp-admin/upgrade-schema.php',
80 'wp-admin/upload-functions.php',
81 'wp-admin/upload-rtl.css',
82 'wp-admin/upload.css',
83 'wp-admin/upload.js',
84 'wp-admin/users.js',
85 'wp-admin/widgets-rtl.css',
86 'wp-admin/widgets.css',
87 'wp-admin/xfn.js',
88 'wp-includes/js/tinymce/license.html',
89 // 2.5
90 'wp-admin/css/upload.css',
91 'wp-admin/images/box-bg-left.gif',
92 'wp-admin/images/box-bg-right.gif',
93 'wp-admin/images/box-bg.gif',
94 'wp-admin/images/box-butt-left.gif',
95 'wp-admin/images/box-butt-right.gif',
96 'wp-admin/images/box-butt.gif',
97 'wp-admin/images/box-head-left.gif',
98 'wp-admin/images/box-head-right.gif',
99 'wp-admin/images/box-head.gif',
100 'wp-admin/images/heading-bg.gif',
101 'wp-admin/images/login-bkg-bottom.gif',
102 'wp-admin/images/login-bkg-tile.gif',
103 'wp-admin/images/notice.gif',
104 'wp-admin/images/toggle.gif',
105 'wp-admin/includes/upload.php',
106 'wp-admin/js/dbx-admin-key.js',
107 'wp-admin/js/link-cat.js',
108 'wp-admin/profile-update.php',
109 'wp-admin/templates.php',
110 'wp-includes/js/dbx.js',
111 'wp-includes/js/fat.js',
112 'wp-includes/js/list-manipulation.js',
113 'wp-includes/js/tinymce/langs/en.js',
114 'wp-includes/js/tinymce/plugins/directionality/images',
115 'wp-includes/js/tinymce/plugins/directionality/langs',
116 'wp-includes/js/tinymce/plugins/paste/images',
117 'wp-includes/js/tinymce/plugins/paste/jscripts',
118 'wp-includes/js/tinymce/plugins/paste/langs',
119 'wp-includes/js/tinymce/plugins/wordpress/images',
120 'wp-includes/js/tinymce/plugins/wordpress/langs',
121 'wp-includes/js/tinymce/plugins/wordpress/wordpress.css',
122 'wp-includes/js/tinymce/plugins/wphelp',
123 // 2.5.1
124 'wp-includes/js/tinymce/tiny_mce_gzip.php',
125 // 2.6
126 'wp-admin/bookmarklet.php',
127 'wp-includes/js/jquery/jquery.dimensions.min.js',
128 'wp-includes/js/tinymce/plugins/wordpress/popups.css',
129 'wp-includes/js/wp-ajax.js',
130 // 2.7
131 'wp-admin/css/press-this-ie-rtl.css',
132 'wp-admin/css/press-this-ie.css',
133 'wp-admin/css/upload-rtl.css',
134 'wp-admin/edit-form.php',
135 'wp-admin/images/comment-pill.gif',
136 'wp-admin/images/comment-stalk-classic.gif',
137 'wp-admin/images/comment-stalk-fresh.gif',
138 'wp-admin/images/comment-stalk-rtl.gif',
139 'wp-admin/images/del.png',
140 'wp-admin/images/gear.png',
141 'wp-admin/images/media-button-gallery.gif',
142 'wp-admin/images/media-buttons.gif',
143 'wp-admin/images/postbox-bg.gif',
144 'wp-admin/images/tab.png',
145 'wp-admin/images/tail.gif',
146 'wp-admin/js/forms.js',
147 'wp-admin/js/upload.js',
148 'wp-admin/link-import.php',
149 'wp-includes/images/audio.png',
150 'wp-includes/images/css.png',
151 'wp-includes/images/default.png',
152 'wp-includes/images/doc.png',
153 'wp-includes/images/exe.png',
154 'wp-includes/images/html.png',
155 'wp-includes/images/js.png',
156 'wp-includes/images/pdf.png',
157 'wp-includes/images/swf.png',
158 'wp-includes/images/tar.png',
159 'wp-includes/images/text.png',
160 'wp-includes/images/video.png',
161 'wp-includes/images/zip.png',
162 'wp-includes/js/tinymce/tiny_mce_config.php',
163 'wp-includes/js/tinymce/tiny_mce_ext.js',
164 // 2.8
165 'wp-admin/js/users.js',
166 'wp-includes/js/swfupload/swfupload_f9.swf',
167 'wp-includes/js/tinymce/plugins/autosave',
168 'wp-includes/js/tinymce/plugins/paste/css',
169 'wp-includes/js/tinymce/utils/mclayer.js',
170 'wp-includes/js/tinymce/wordpress.css',
171 // 2.9
172 'wp-admin/js/page.dev.js',
173 'wp-admin/js/page.js',
174 'wp-admin/js/set-post-thumbnail-handler.dev.js',
175 'wp-admin/js/set-post-thumbnail-handler.js',
176 'wp-admin/js/slug.dev.js',
177 'wp-admin/js/slug.js',
178 'wp-includes/gettext.php',
179 'wp-includes/js/tinymce/plugins/wordpress/js',
180 'wp-includes/streams.php',
181 // MU
182 'README.txt',
183 'htaccess.dist',
184 'index-install.php',
185 'wp-admin/css/mu-rtl.css',
186 'wp-admin/css/mu.css',
187 'wp-admin/images/site-admin.png',
188 'wp-admin/includes/mu.php',
189 'wp-admin/wpmu-admin.php',
190 'wp-admin/wpmu-blogs.php',
191 'wp-admin/wpmu-edit.php',
192 'wp-admin/wpmu-options.php',
193 'wp-admin/wpmu-themes.php',
194 'wp-admin/wpmu-upgrade-site.php',
195 'wp-admin/wpmu-users.php',
196 'wp-includes/images/wordpress-mu.png',
197 'wp-includes/wpmu-default-filters.php',
198 'wp-includes/wpmu-functions.php',
199 'wpmu-settings.php',
200 // 3.0
201 'wp-admin/categories.php',
202 'wp-admin/edit-category-form.php',
203 'wp-admin/edit-page-form.php',
204 'wp-admin/edit-pages.php',
205 'wp-admin/images/admin-header-footer.png',
206 'wp-admin/images/browse-happy.gif',
207 'wp-admin/images/ico-add.png',
208 'wp-admin/images/ico-close.png',
209 'wp-admin/images/ico-edit.png',
210 'wp-admin/images/ico-viewpage.png',
211 'wp-admin/images/fav-top.png',
212 'wp-admin/images/screen-options-left.gif',
213 'wp-admin/images/wp-logo-vs.gif',
214 'wp-admin/images/wp-logo.gif',
215 'wp-admin/import',
216 'wp-admin/js/wp-gears.dev.js',
217 'wp-admin/js/wp-gears.js',
218 'wp-admin/options-misc.php',
219 'wp-admin/page-new.php',
220 'wp-admin/page.php',
221 'wp-admin/rtl.css',
222 'wp-admin/rtl.dev.css',
223 'wp-admin/update-links.php',
224 'wp-admin/wp-admin.css',
225 'wp-admin/wp-admin.dev.css',
226 'wp-includes/js/codepress',
227 'wp-includes/js/jquery/autocomplete.dev.js',
228 'wp-includes/js/jquery/autocomplete.js',
229 'wp-includes/js/jquery/interface.js',
230 // Following file added back in 5.1, see #45645.
231 //'wp-includes/js/tinymce/wp-tinymce.js',
232 // 3.1
233 'wp-admin/edit-attachment-rows.php',
234 'wp-admin/edit-link-categories.php',
235 'wp-admin/edit-link-category-form.php',
236 'wp-admin/edit-post-rows.php',
237 'wp-admin/images/button-grad-active-vs.png',
238 'wp-admin/images/button-grad-vs.png',
239 'wp-admin/images/fav-arrow-vs-rtl.gif',
240 'wp-admin/images/fav-arrow-vs.gif',
241 'wp-admin/images/fav-top-vs.gif',
242 'wp-admin/images/list-vs.png',
243 'wp-admin/images/screen-options-right-up.gif',
244 'wp-admin/images/screen-options-right.gif',
245 'wp-admin/images/visit-site-button-grad-vs.gif',
246 'wp-admin/images/visit-site-button-grad.gif',
247 'wp-admin/link-category.php',
248 'wp-admin/sidebar.php',
249 'wp-includes/classes.php',
250 'wp-includes/js/tinymce/blank.htm',
251 'wp-includes/js/tinymce/plugins/media/img',
252 'wp-includes/js/tinymce/plugins/safari',
253 // 3.2
254 'wp-admin/images/logo-login.gif',
255 'wp-admin/images/star.gif',
256 'wp-admin/js/list-table.dev.js',
257 'wp-admin/js/list-table.js',
258 'wp-includes/default-embeds.php',
259 // 3.3
260 'wp-admin/css/colors-classic-rtl.css',
261 'wp-admin/css/colors-classic-rtl.dev.css',
262 'wp-admin/css/colors-fresh-rtl.css',
263 'wp-admin/css/colors-fresh-rtl.dev.css',
264 'wp-admin/css/dashboard-rtl.dev.css',
265 'wp-admin/css/dashboard.dev.css',
266 'wp-admin/css/global-rtl.css',
267 'wp-admin/css/global-rtl.dev.css',
268 'wp-admin/css/global.css',
269 'wp-admin/css/global.dev.css',
270 'wp-admin/css/install-rtl.dev.css',
271 'wp-admin/css/login-rtl.dev.css',
272 'wp-admin/css/login.dev.css',
273 'wp-admin/css/ms.css',
274 'wp-admin/css/ms.dev.css',
275 'wp-admin/css/nav-menu-rtl.css',
276 'wp-admin/css/nav-menu-rtl.dev.css',
277 'wp-admin/css/nav-menu.css',
278 'wp-admin/css/nav-menu.dev.css',
279 'wp-admin/css/plugin-install-rtl.css',
280 'wp-admin/css/plugin-install-rtl.dev.css',
281 'wp-admin/css/plugin-install.css',
282 'wp-admin/css/plugin-install.dev.css',
283 'wp-admin/css/press-this-rtl.dev.css',
284 'wp-admin/css/press-this.dev.css',
285 'wp-admin/css/theme-editor-rtl.css',
286 'wp-admin/css/theme-editor-rtl.dev.css',
287 'wp-admin/css/theme-editor.css',
288 'wp-admin/css/theme-editor.dev.css',
289 'wp-admin/css/theme-install-rtl.css',
290 'wp-admin/css/theme-install-rtl.dev.css',
291 'wp-admin/css/theme-install.css',
292 'wp-admin/css/theme-install.dev.css',
293 'wp-admin/css/widgets-rtl.dev.css',
294 'wp-admin/css/widgets.dev.css',
295 'wp-admin/includes/internal-linking.php',
296 'wp-includes/images/admin-bar-sprite-rtl.png',
297 'wp-includes/js/jquery/ui.button.js',
298 'wp-includes/js/jquery/ui.core.js',
299 'wp-includes/js/jquery/ui.dialog.js',
300 'wp-includes/js/jquery/ui.draggable.js',
301 'wp-includes/js/jquery/ui.droppable.js',
302 'wp-includes/js/jquery/ui.mouse.js',
303 'wp-includes/js/jquery/ui.position.js',
304 'wp-includes/js/jquery/ui.resizable.js',
305 'wp-includes/js/jquery/ui.selectable.js',
306 'wp-includes/js/jquery/ui.sortable.js',
307 'wp-includes/js/jquery/ui.tabs.js',
308 'wp-includes/js/jquery/ui.widget.js',
309 'wp-includes/js/l10n.dev.js',
310 'wp-includes/js/l10n.js',
311 'wp-includes/js/tinymce/plugins/wplink/css',
312 'wp-includes/js/tinymce/plugins/wplink/img',
313 'wp-includes/js/tinymce/plugins/wplink/js',
314 // Don't delete, yet: 'wp-rss.php',
315 // Don't delete, yet: 'wp-rdf.php',
316 // Don't delete, yet: 'wp-rss2.php',
317 // Don't delete, yet: 'wp-commentsrss2.php',
318 // Don't delete, yet: 'wp-atom.php',
319 // Don't delete, yet: 'wp-feed.php',
320 // 3.4
321 'wp-admin/images/gray-star.png',
322 'wp-admin/images/logo-login.png',
323 'wp-admin/images/star.png',
324 'wp-admin/index-extra.php',
325 'wp-admin/network/index-extra.php',
326 'wp-admin/user/index-extra.php',
327 'wp-includes/css/editor-buttons.css',
328 'wp-includes/css/editor-buttons.dev.css',
329 'wp-includes/js/tinymce/plugins/paste/blank.htm',
330 'wp-includes/js/tinymce/plugins/wordpress/css',
331 'wp-includes/js/tinymce/plugins/wordpress/editor_plugin.dev.js',
332 'wp-includes/js/tinymce/plugins/wpdialogs/editor_plugin.dev.js',
333 'wp-includes/js/tinymce/plugins/wpeditimage/editor_plugin.dev.js',
334 'wp-includes/js/tinymce/plugins/wpgallery/editor_plugin.dev.js',
335 'wp-includes/js/tinymce/plugins/wplink/editor_plugin.dev.js',
336 // Don't delete, yet: 'wp-pass.php',
337 // Don't delete, yet: 'wp-register.php',
338 // 3.5
339 'wp-admin/gears-manifest.php',
340 'wp-admin/includes/manifest.php',
341 'wp-admin/images/archive-link.png',
342 'wp-admin/images/blue-grad.png',
343 'wp-admin/images/button-grad-active.png',
344 'wp-admin/images/button-grad.png',
345 'wp-admin/images/ed-bg-vs.gif',
346 'wp-admin/images/ed-bg.gif',
347 'wp-admin/images/fade-butt.png',
348 'wp-admin/images/fav-arrow-rtl.gif',
349 'wp-admin/images/fav-arrow.gif',
350 'wp-admin/images/fav-vs.png',
351 'wp-admin/images/fav.png',
352 'wp-admin/images/gray-grad.png',
353 'wp-admin/images/loading-publish.gif',
354 'wp-admin/images/logo-ghost.png',
355 'wp-admin/images/logo.gif',
356 'wp-admin/images/menu-arrow-frame-rtl.png',
357 'wp-admin/images/menu-arrow-frame.png',
358 'wp-admin/images/menu-arrows.gif',
359 'wp-admin/images/menu-bits-rtl-vs.gif',
360 'wp-admin/images/menu-bits-rtl.gif',
361 'wp-admin/images/menu-bits-vs.gif',
362 'wp-admin/images/menu-bits.gif',
363 'wp-admin/images/menu-dark-rtl-vs.gif',
364 'wp-admin/images/menu-dark-rtl.gif',
365 'wp-admin/images/menu-dark-vs.gif',
366 'wp-admin/images/menu-dark.gif',
367 'wp-admin/images/required.gif',
368 'wp-admin/images/screen-options-toggle-vs.gif',
369 'wp-admin/images/screen-options-toggle.gif',
370 'wp-admin/images/toggle-arrow-rtl.gif',
371 'wp-admin/images/toggle-arrow.gif',
372 'wp-admin/images/upload-classic.png',
373 'wp-admin/images/upload-fresh.png',
374 'wp-admin/images/white-grad-active.png',
375 'wp-admin/images/white-grad.png',
376 'wp-admin/images/widgets-arrow-vs.gif',
377 'wp-admin/images/widgets-arrow.gif',
378 'wp-admin/images/wpspin_dark.gif',
379 'wp-includes/images/upload.png',
380 'wp-includes/js/prototype.js',
381 'wp-includes/js/scriptaculous',
382 'wp-admin/css/wp-admin-rtl.dev.css',
383 'wp-admin/css/wp-admin.dev.css',
384 'wp-admin/css/media-rtl.dev.css',
385 'wp-admin/css/media.dev.css',
386 'wp-admin/css/colors-classic.dev.css',
387 'wp-admin/css/customize-controls-rtl.dev.css',
388 'wp-admin/css/customize-controls.dev.css',
389 'wp-admin/css/ie-rtl.dev.css',
390 'wp-admin/css/ie.dev.css',
391 'wp-admin/css/install.dev.css',
392 'wp-admin/css/colors-fresh.dev.css',
393 'wp-includes/js/customize-base.dev.js',
394 'wp-includes/js/json2.dev.js',
395 'wp-includes/js/comment-reply.dev.js',
396 'wp-includes/js/customize-preview.dev.js',
397 'wp-includes/js/wplink.dev.js',
398 'wp-includes/js/tw-sack.dev.js',
399 'wp-includes/js/wp-list-revisions.dev.js',
400 'wp-includes/js/autosave.dev.js',
401 'wp-includes/js/admin-bar.dev.js',
402 'wp-includes/js/quicktags.dev.js',
403 'wp-includes/js/wp-ajax-response.dev.js',
404 'wp-includes/js/wp-pointer.dev.js',
405 'wp-includes/js/hoverIntent.dev.js',
406 'wp-includes/js/colorpicker.dev.js',
407 'wp-includes/js/wp-lists.dev.js',
408 'wp-includes/js/customize-loader.dev.js',
409 'wp-includes/js/jquery/jquery.table-hotkeys.dev.js',
410 'wp-includes/js/jquery/jquery.color.dev.js',
411 'wp-includes/js/jquery/jquery.color.js',
412 'wp-includes/js/jquery/jquery.hotkeys.dev.js',
413 'wp-includes/js/jquery/jquery.form.dev.js',
414 'wp-includes/js/jquery/suggest.dev.js',
415 'wp-admin/js/xfn.dev.js',
416 'wp-admin/js/set-post-thumbnail.dev.js',
417 'wp-admin/js/comment.dev.js',
418 'wp-admin/js/theme.dev.js',
419 'wp-admin/js/cat.dev.js',
420 'wp-admin/js/password-strength-meter.dev.js',
421 'wp-admin/js/user-profile.dev.js',
422 'wp-admin/js/theme-preview.dev.js',
423 'wp-admin/js/post.dev.js',
424 'wp-admin/js/media-upload.dev.js',
425 'wp-admin/js/word-count.dev.js',
426 'wp-admin/js/plugin-install.dev.js',
427 'wp-admin/js/edit-comments.dev.js',
428 'wp-admin/js/media-gallery.dev.js',
429 'wp-admin/js/custom-fields.dev.js',
430 'wp-admin/js/custom-background.dev.js',
431 'wp-admin/js/common.dev.js',
432 'wp-admin/js/inline-edit-tax.dev.js',
433 'wp-admin/js/gallery.dev.js',
434 'wp-admin/js/utils.dev.js',
435 'wp-admin/js/widgets.dev.js',
436 'wp-admin/js/wp-fullscreen.dev.js',
437 'wp-admin/js/nav-menu.dev.js',
438 'wp-admin/js/dashboard.dev.js',
439 'wp-admin/js/link.dev.js',
440 'wp-admin/js/user-suggest.dev.js',
441 'wp-admin/js/postbox.dev.js',
442 'wp-admin/js/tags.dev.js',
443 'wp-admin/js/image-edit.dev.js',
444 'wp-admin/js/media.dev.js',
445 'wp-admin/js/customize-controls.dev.js',
446 'wp-admin/js/inline-edit-post.dev.js',
447 'wp-admin/js/categories.dev.js',
448 'wp-admin/js/editor.dev.js',
449 'wp-includes/js/plupload/handlers.dev.js',
450 'wp-includes/js/plupload/wp-plupload.dev.js',
451 'wp-includes/js/swfupload/handlers.dev.js',
452 'wp-includes/js/jcrop/jquery.Jcrop.dev.js',
453 'wp-includes/js/jcrop/jquery.Jcrop.js',
454 'wp-includes/js/jcrop/jquery.Jcrop.css',
455 'wp-includes/js/imgareaselect/jquery.imgareaselect.dev.js',
456 'wp-includes/css/wp-pointer.dev.css',
457 'wp-includes/css/editor.dev.css',
458 'wp-includes/css/jquery-ui-dialog.dev.css',
459 'wp-includes/css/admin-bar-rtl.dev.css',
460 'wp-includes/css/admin-bar.dev.css',
461 'wp-includes/js/jquery/ui/jquery.effects.clip.min.js',
462 'wp-includes/js/jquery/ui/jquery.effects.scale.min.js',
463 'wp-includes/js/jquery/ui/jquery.effects.blind.min.js',
464 'wp-includes/js/jquery/ui/jquery.effects.core.min.js',
465 'wp-includes/js/jquery/ui/jquery.effects.shake.min.js',
466 'wp-includes/js/jquery/ui/jquery.effects.fade.min.js',
467 'wp-includes/js/jquery/ui/jquery.effects.explode.min.js',
468 'wp-includes/js/jquery/ui/jquery.effects.slide.min.js',
469 'wp-includes/js/jquery/ui/jquery.effects.drop.min.js',
470 'wp-includes/js/jquery/ui/jquery.effects.highlight.min.js',
471 'wp-includes/js/jquery/ui/jquery.effects.bounce.min.js',
472 'wp-includes/js/jquery/ui/jquery.effects.pulsate.min.js',
473 'wp-includes/js/jquery/ui/jquery.effects.transfer.min.js',
474 'wp-includes/js/jquery/ui/jquery.effects.fold.min.js',
475 'wp-admin/js/utils.js',
476 // Added back in 5.3 [45448], see #43895.
477 // 'wp-admin/options-privacy.php',
478 'wp-app.php',
479 'wp-includes/class-wp-atom-server.php',
480 // 3.5.2
481 'wp-includes/js/swfupload/swfupload-all.js',
482 // 3.6
483 'wp-admin/js/revisions-js.php',
484 'wp-admin/images/screenshots',
485 'wp-admin/js/categories.js',
486 'wp-admin/js/categories.min.js',
487 'wp-admin/js/custom-fields.js',
488 'wp-admin/js/custom-fields.min.js',
489 // 3.7
490 'wp-admin/js/cat.js',
491 'wp-admin/js/cat.min.js',
492 // 3.8
493 'wp-includes/js/thickbox/tb-close-2x.png',
494 'wp-includes/js/thickbox/tb-close.png',
495 'wp-includes/images/wpmini-blue-2x.png',
496 'wp-includes/images/wpmini-blue.png',
497 'wp-admin/css/colors-fresh.css',
498 'wp-admin/css/colors-classic.css',
499 'wp-admin/css/colors-fresh.min.css',
500 'wp-admin/css/colors-classic.min.css',
501 'wp-admin/js/about.min.js',
502 'wp-admin/js/about.js',
503 'wp-admin/images/arrows-dark-vs-2x.png',
504 'wp-admin/images/wp-logo-vs.png',
505 'wp-admin/images/arrows-dark-vs.png',
506 'wp-admin/images/wp-logo.png',
507 'wp-admin/images/arrows-pr.png',
508 'wp-admin/images/arrows-dark.png',
509 'wp-admin/images/press-this.png',
510 'wp-admin/images/press-this-2x.png',
511 'wp-admin/images/arrows-vs-2x.png',
512 'wp-admin/images/welcome-icons.png',
513 'wp-admin/images/wp-logo-2x.png',
514 'wp-admin/images/stars-rtl-2x.png',
515 'wp-admin/images/arrows-dark-2x.png',
516 'wp-admin/images/arrows-pr-2x.png',
517 'wp-admin/images/menu-shadow-rtl.png',
518 'wp-admin/images/arrows-vs.png',
519 'wp-admin/images/about-search-2x.png',
520 'wp-admin/images/bubble_bg-rtl-2x.gif',
521 'wp-admin/images/wp-badge-2x.png',
522 'wp-admin/images/wordpress-logo-2x.png',
523 'wp-admin/images/bubble_bg-rtl.gif',
524 'wp-admin/images/wp-badge.png',
525 'wp-admin/images/menu-shadow.png',
526 'wp-admin/images/about-globe-2x.png',
527 'wp-admin/images/welcome-icons-2x.png',
528 'wp-admin/images/stars-rtl.png',
529 'wp-admin/images/wp-logo-vs-2x.png',
530 'wp-admin/images/about-updates-2x.png',
531 // 3.9
532 'wp-admin/css/colors.css',
533 'wp-admin/css/colors.min.css',
534 'wp-admin/css/colors-rtl.css',
535 'wp-admin/css/colors-rtl.min.css',
536 // Following files added back in 4.5, see #36083.
537 // 'wp-admin/css/media-rtl.min.css',
538 // 'wp-admin/css/media.min.css',
539 // 'wp-admin/css/farbtastic-rtl.min.css',
540 'wp-admin/images/lock-2x.png',
541 'wp-admin/images/lock.png',
542 'wp-admin/js/theme-preview.js',
543 'wp-admin/js/theme-install.min.js',
544 'wp-admin/js/theme-install.js',
545 'wp-admin/js/theme-preview.min.js',
546 'wp-includes/js/plupload/plupload.html4.js',
547 'wp-includes/js/plupload/plupload.html5.js',
548 'wp-includes/js/plupload/changelog.txt',
549 'wp-includes/js/plupload/plupload.silverlight.js',
550 'wp-includes/js/plupload/plupload.flash.js',
551 // Added back in 4.9 [41328], see #41755.
552 // 'wp-includes/js/plupload/plupload.js',
553 'wp-includes/js/tinymce/plugins/spellchecker',
554 'wp-includes/js/tinymce/plugins/inlinepopups',
555 'wp-includes/js/tinymce/plugins/media/js',
556 'wp-includes/js/tinymce/plugins/media/css',
557 'wp-includes/js/tinymce/plugins/wordpress/img',
558 'wp-includes/js/tinymce/plugins/wpdialogs/js',
559 'wp-includes/js/tinymce/plugins/wpeditimage/img',
560 'wp-includes/js/tinymce/plugins/wpeditimage/js',
561 'wp-includes/js/tinymce/plugins/wpeditimage/css',
562 'wp-includes/js/tinymce/plugins/wpgallery/img',
563 'wp-includes/js/tinymce/plugins/paste/js',
564 'wp-includes/js/tinymce/themes/advanced',
565 'wp-includes/js/tinymce/tiny_mce.js',
566 'wp-includes/js/tinymce/mark_loaded_src.js',
567 'wp-includes/js/tinymce/wp-tinymce-schema.js',
568 'wp-includes/js/tinymce/plugins/media/editor_plugin.js',
569 'wp-includes/js/tinymce/plugins/media/editor_plugin_src.js',
570 'wp-includes/js/tinymce/plugins/media/media.htm',
571 'wp-includes/js/tinymce/plugins/wpview/editor_plugin_src.js',
572 'wp-includes/js/tinymce/plugins/wpview/editor_plugin.js',
573 'wp-includes/js/tinymce/plugins/directionality/editor_plugin.js',
574 'wp-includes/js/tinymce/plugins/directionality/editor_plugin_src.js',
575 'wp-includes/js/tinymce/plugins/wordpress/editor_plugin.js',
576 'wp-includes/js/tinymce/plugins/wordpress/editor_plugin_src.js',
577 'wp-includes/js/tinymce/plugins/wpdialogs/editor_plugin_src.js',
578 'wp-includes/js/tinymce/plugins/wpdialogs/editor_plugin.js',
579 'wp-includes/js/tinymce/plugins/wpeditimage/editimage.html',
580 'wp-includes/js/tinymce/plugins/wpeditimage/editor_plugin.js',
581 'wp-includes/js/tinymce/plugins/wpeditimage/editor_plugin_src.js',
582 'wp-includes/js/tinymce/plugins/fullscreen/editor_plugin_src.js',
583 'wp-includes/js/tinymce/plugins/fullscreen/fullscreen.htm',
584 'wp-includes/js/tinymce/plugins/fullscreen/editor_plugin.js',
585 'wp-includes/js/tinymce/plugins/wplink/editor_plugin_src.js',
586 'wp-includes/js/tinymce/plugins/wplink/editor_plugin.js',
587 'wp-includes/js/tinymce/plugins/wpgallery/editor_plugin_src.js',
588 'wp-includes/js/tinymce/plugins/wpgallery/editor_plugin.js',
589 'wp-includes/js/tinymce/plugins/tabfocus/editor_plugin.js',
590 'wp-includes/js/tinymce/plugins/tabfocus/editor_plugin_src.js',
591 'wp-includes/js/tinymce/plugins/paste/editor_plugin.js',
592 'wp-includes/js/tinymce/plugins/paste/pasteword.htm',
593 'wp-includes/js/tinymce/plugins/paste/editor_plugin_src.js',
594 'wp-includes/js/tinymce/plugins/paste/pastetext.htm',
595 'wp-includes/js/tinymce/langs/wp-langs.php',
596 // 4.1
597 'wp-includes/js/jquery/ui/jquery.ui.accordion.min.js',
598 'wp-includes/js/jquery/ui/jquery.ui.autocomplete.min.js',
599 'wp-includes/js/jquery/ui/jquery.ui.button.min.js',
600 'wp-includes/js/jquery/ui/jquery.ui.core.min.js',
601 'wp-includes/js/jquery/ui/jquery.ui.datepicker.min.js',
602 'wp-includes/js/jquery/ui/jquery.ui.dialog.min.js',
603 'wp-includes/js/jquery/ui/jquery.ui.draggable.min.js',
604 'wp-includes/js/jquery/ui/jquery.ui.droppable.min.js',
605 'wp-includes/js/jquery/ui/jquery.ui.effect-blind.min.js',
606 'wp-includes/js/jquery/ui/jquery.ui.effect-bounce.min.js',
607 'wp-includes/js/jquery/ui/jquery.ui.effect-clip.min.js',
608 'wp-includes/js/jquery/ui/jquery.ui.effect-drop.min.js',
609 'wp-includes/js/jquery/ui/jquery.ui.effect-explode.min.js',
610 'wp-includes/js/jquery/ui/jquery.ui.effect-fade.min.js',
611 'wp-includes/js/jquery/ui/jquery.ui.effect-fold.min.js',
612 'wp-includes/js/jquery/ui/jquery.ui.effect-highlight.min.js',
613 'wp-includes/js/jquery/ui/jquery.ui.effect-pulsate.min.js',
614 'wp-includes/js/jquery/ui/jquery.ui.effect-scale.min.js',
615 'wp-includes/js/jquery/ui/jquery.ui.effect-shake.min.js',
616 'wp-includes/js/jquery/ui/jquery.ui.effect-slide.min.js',
617 'wp-includes/js/jquery/ui/jquery.ui.effect-transfer.min.js',
618 'wp-includes/js/jquery/ui/jquery.ui.effect.min.js',
619 'wp-includes/js/jquery/ui/jquery.ui.menu.min.js',
620 'wp-includes/js/jquery/ui/jquery.ui.mouse.min.js',
621 'wp-includes/js/jquery/ui/jquery.ui.position.min.js',
622 'wp-includes/js/jquery/ui/jquery.ui.progressbar.min.js',
623 'wp-includes/js/jquery/ui/jquery.ui.resizable.min.js',
624 'wp-includes/js/jquery/ui/jquery.ui.selectable.min.js',
625 'wp-includes/js/jquery/ui/jquery.ui.slider.min.js',
626 'wp-includes/js/jquery/ui/jquery.ui.sortable.min.js',
627 'wp-includes/js/jquery/ui/jquery.ui.spinner.min.js',
628 'wp-includes/js/jquery/ui/jquery.ui.tabs.min.js',
629 'wp-includes/js/jquery/ui/jquery.ui.tooltip.min.js',
630 'wp-includes/js/jquery/ui/jquery.ui.widget.min.js',
631 'wp-includes/js/tinymce/skins/wordpress/images/dashicon-no-alt.png',
632 // 4.3
633 'wp-admin/js/wp-fullscreen.js',
634 'wp-admin/js/wp-fullscreen.min.js',
635 'wp-includes/js/tinymce/wp-mce-help.php',
636 'wp-includes/js/tinymce/plugins/wpfullscreen',
637 // 4.5
638 'wp-includes/theme-compat/comments-popup.php',
639 // 4.6
640 'wp-admin/includes/class-wp-automatic-upgrader.php', // Wrong file name, see #37628.
641 // 4.8
642 'wp-includes/js/tinymce/plugins/wpembed',
643 'wp-includes/js/tinymce/plugins/media/moxieplayer.swf',
644 'wp-includes/js/tinymce/skins/lightgray/fonts/readme.md',
645 'wp-includes/js/tinymce/skins/lightgray/fonts/tinymce-small.json',
646 'wp-includes/js/tinymce/skins/lightgray/fonts/tinymce.json',
647 'wp-includes/js/tinymce/skins/lightgray/skin.ie7.min.css',
648 // 4.9
649 'wp-admin/css/press-this-editor-rtl.css',
650 'wp-admin/css/press-this-editor-rtl.min.css',
651 'wp-admin/css/press-this-editor.css',
652 'wp-admin/css/press-this-editor.min.css',
653 'wp-admin/css/press-this-rtl.css',
654 'wp-admin/css/press-this-rtl.min.css',
655 'wp-admin/css/press-this.css',
656 'wp-admin/css/press-this.min.css',
657 'wp-admin/includes/class-wp-press-this.php',
658 'wp-admin/js/bookmarklet.js',
659 'wp-admin/js/bookmarklet.min.js',
660 'wp-admin/js/press-this.js',
661 'wp-admin/js/press-this.min.js',
662 'wp-includes/js/mediaelement/background.png',
663 'wp-includes/js/mediaelement/bigplay.png',
664 'wp-includes/js/mediaelement/bigplay.svg',
665 'wp-includes/js/mediaelement/controls.png',
666 'wp-includes/js/mediaelement/controls.svg',
667 'wp-includes/js/mediaelement/flashmediaelement.swf',
668 'wp-includes/js/mediaelement/froogaloop.min.js',
669 'wp-includes/js/mediaelement/jumpforward.png',
670 'wp-includes/js/mediaelement/loading.gif',
671 'wp-includes/js/mediaelement/silverlightmediaelement.xap',
672 'wp-includes/js/mediaelement/skipback.png',
673 'wp-includes/js/plupload/plupload.flash.swf',
674 'wp-includes/js/plupload/plupload.full.min.js',
675 'wp-includes/js/plupload/plupload.silverlight.xap',
676 'wp-includes/js/swfupload/plugins',
677 'wp-includes/js/swfupload/swfupload.swf',
678 // 4.9.2
679 'wp-includes/js/mediaelement/lang',
680 'wp-includes/js/mediaelement/mediaelement-flash-audio-ogg.swf',
681 'wp-includes/js/mediaelement/mediaelement-flash-audio.swf',
682 'wp-includes/js/mediaelement/mediaelement-flash-video-hls.swf',
683 'wp-includes/js/mediaelement/mediaelement-flash-video-mdash.swf',
684 'wp-includes/js/mediaelement/mediaelement-flash-video.swf',
685 'wp-includes/js/mediaelement/renderers/dailymotion.js',
686 'wp-includes/js/mediaelement/renderers/dailymotion.min.js',
687 'wp-includes/js/mediaelement/renderers/facebook.js',
688 'wp-includes/js/mediaelement/renderers/facebook.min.js',
689 'wp-includes/js/mediaelement/renderers/soundcloud.js',
690 'wp-includes/js/mediaelement/renderers/soundcloud.min.js',
691 'wp-includes/js/mediaelement/renderers/twitch.js',
692 'wp-includes/js/mediaelement/renderers/twitch.min.js',
693 // 5.0
694 'wp-includes/js/codemirror/jshint.js',
695 // 5.1
696 'wp-includes/js/tinymce/wp-tinymce.js.gz',
697 // 5.3
698 'wp-includes/js/wp-a11y.js', // Moved to: wp-includes/js/dist/a11y.js
699 'wp-includes/js/wp-a11y.min.js', // Moved to: wp-includes/js/dist/a11y.min.js
700 // 5.4
701 'wp-admin/js/wp-fullscreen-stub.js',
702 'wp-admin/js/wp-fullscreen-stub.min.js',
703 // 5.5
704 'wp-admin/css/ie.css',
705 'wp-admin/css/ie.min.css',
706 'wp-admin/css/ie-rtl.css',
707 'wp-admin/css/ie-rtl.min.css',
708 // 5.6
709 'wp-includes/js/jquery/ui/position.min.js',
710 'wp-includes/js/jquery/ui/widget.min.js',
711 // 5.7
712 'wp-includes/blocks/classic/block.json',
713 // 5.8
714 'wp-admin/images/freedoms.png',
715 'wp-admin/images/privacy.png',
716 'wp-admin/images/about-badge.svg',
717 'wp-admin/images/about-color-palette.svg',
718 'wp-admin/images/about-color-palette-vert.svg',
719 'wp-admin/images/about-header-brushes.svg',
720 'wp-includes/block-patterns/large-header.php',
721 'wp-includes/block-patterns/heading-paragraph.php',
722 'wp-includes/block-patterns/quote.php',
723 'wp-includes/block-patterns/text-three-columns-buttons.php',
724 'wp-includes/block-patterns/two-buttons.php',
725 'wp-includes/block-patterns/two-images.php',
726 'wp-includes/block-patterns/three-buttons.php',
727 'wp-includes/block-patterns/text-two-columns-with-images.php',
728 'wp-includes/block-patterns/text-two-columns.php',
729 'wp-includes/block-patterns/large-header-button.php',
730 'wp-includes/blocks/subhead',
731 'wp-includes/css/dist/editor/editor-styles.css',
732 'wp-includes/css/dist/editor/editor-styles.min.css',
733 'wp-includes/css/dist/editor/editor-styles-rtl.css',
734 'wp-includes/css/dist/editor/editor-styles-rtl.min.css',
735 // 5.9
736 'wp-includes/blocks/heading/editor.css',
737 'wp-includes/blocks/heading/editor.min.css',
738 'wp-includes/blocks/heading/editor-rtl.css',
739 'wp-includes/blocks/heading/editor-rtl.min.css',
740 'wp-includes/blocks/query-title/editor.css',
741 'wp-includes/blocks/query-title/editor.min.css',
742 'wp-includes/blocks/query-title/editor-rtl.css',
743 'wp-includes/blocks/query-title/editor-rtl.min.css',
744 /*
745 * Restored in WordPress 6.7
746 *
747 * 'wp-includes/blocks/tag-cloud/editor.css',
748 * 'wp-includes/blocks/tag-cloud/editor.min.css',
749 * 'wp-includes/blocks/tag-cloud/editor-rtl.css',
750 * 'wp-includes/blocks/tag-cloud/editor-rtl.min.css',
751 */
752 // 6.1
753 'wp-includes/blocks/post-comments.php',
754 'wp-includes/blocks/post-comments',
755 'wp-includes/blocks/comments-query-loop',
756 // 6.3
757 'wp-includes/images/wlw',
758 'wp-includes/wlwmanifest.xml',
759 'wp-includes/random_compat',
760 // 6.4
761 'wp-includes/navigation-fallback.php',
762 'wp-includes/blocks/navigation/view-modal.min.js',
763 'wp-includes/blocks/navigation/view-modal.js',
764 // 6.5
765 'wp-includes/ID3/license.commercial.txt',
766 'wp-includes/blocks/query/style-rtl.min.css',
767 'wp-includes/blocks/query/style.min.css',
768 'wp-includes/blocks/query/style-rtl.css',
769 'wp-includes/blocks/query/style.css',
770 'wp-admin/images/about-header-privacy.svg',
771 'wp-admin/images/about-header-about.svg',
772 'wp-admin/images/about-header-credits.svg',
773 'wp-admin/images/about-header-freedoms.svg',
774 'wp-admin/images/about-header-contribute.svg',
775 'wp-admin/images/about-header-background.svg',
776 // 6.6
777 'wp-includes/blocks/block/editor.css',
778 'wp-includes/blocks/block/editor.min.css',
779 'wp-includes/blocks/block/editor-rtl.css',
780 'wp-includes/blocks/block/editor-rtl.min.css',
781 /*
782 * 6.7
783 *
784 * WordPress 6.7 included a SimplePie upgrade that included a major
785 * refactoring of the file structure and library. The old files are
786 * split in to two sections to account for this: files and directories.
787 *
788 * See https://core.trac.wordpress.org/changeset/59141
789 */
790 // 6.7 - files
791 'wp-includes/js/dist/interactivity-router.asset.php',
792 'wp-includes/js/dist/interactivity-router.js',
793 'wp-includes/js/dist/interactivity-router.min.js',
794 'wp-includes/js/dist/interactivity-router.min.asset.php',
795 'wp-includes/js/dist/interactivity.js',
796 'wp-includes/js/dist/interactivity.min.js',
797 'wp-includes/js/dist/vendor/react-dom.min.js.LICENSE.txt',
798 'wp-includes/js/dist/vendor/react.min.js.LICENSE.txt',
799 'wp-includes/js/dist/vendor/wp-polyfill-importmap.js',
800 'wp-includes/js/dist/vendor/wp-polyfill-importmap.min.js',
801 'wp-includes/sodium_compat/src/Core/Base64/Common.php',
802 'wp-includes/SimplePie/Author.php',
803 'wp-includes/SimplePie/Cache.php',
804 'wp-includes/SimplePie/Caption.php',
805 'wp-includes/SimplePie/Category.php',
806 'wp-includes/SimplePie/Copyright.php',
807 'wp-includes/SimplePie/Core.php',
808 'wp-includes/SimplePie/Credit.php',
809 'wp-includes/SimplePie/Enclosure.php',
810 'wp-includes/SimplePie/Exception.php',
811 'wp-includes/SimplePie/File.php',
812 'wp-includes/SimplePie/gzdecode.php',
813 'wp-includes/SimplePie/IRI.php',
814 'wp-includes/SimplePie/Item.php',
815 'wp-includes/SimplePie/Locator.php',
816 'wp-includes/SimplePie/Misc.php',
817 'wp-includes/SimplePie/Parser.php',
818 'wp-includes/SimplePie/Rating.php',
819 'wp-includes/SimplePie/Registry.php',
820 'wp-includes/SimplePie/Restriction.php',
821 'wp-includes/SimplePie/Sanitize.php',
822 'wp-includes/SimplePie/Source.php',
823 // 6.7 - directories
824 'wp-includes/SimplePie/Cache/',
825 'wp-includes/SimplePie/Content/',
826 'wp-includes/SimplePie/Decode/',
827 'wp-includes/SimplePie/HTTP/',
828 'wp-includes/SimplePie/Net/',
829 'wp-includes/SimplePie/Parse/',
830 'wp-includes/SimplePie/XML/',
831 // 6.8
832 'wp-includes/blocks/post-content/editor.css',
833 'wp-includes/blocks/post-content/editor.min.css',
834 'wp-includes/blocks/post-content/editor-rtl.css',
835 'wp-includes/blocks/post-content/editor-rtl.min.css',
836 'wp-includes/blocks/post-template/editor.css',
837 'wp-includes/blocks/post-template/editor.min.css',
838 'wp-includes/blocks/post-template/editor-rtl.css',
839 'wp-includes/blocks/post-template/editor-rtl.min.css',
840 'wp-includes/js/dist/undo-manager.js',
841 'wp-includes/js/dist/undo-manager.min.js',
842 'wp-includes/js/dist/fields.min.js',
843 'wp-includes/js/dist/fields.js',
844 // 6.9
845 'wp-includes/blocks/post-author/editor.css',
846 'wp-includes/blocks/post-author/editor.min.css',
847 'wp-includes/blocks/post-author/editor-rtl.css',
848 'wp-includes/blocks/post-author/editor-rtl.min.css',
849 'wp-includes/SimplePie/src/Decode',
850 'wp-includes/SimplePie/src/Core.php',
851);
852
853/**
854 * Stores Requests files to be preloaded and deleted.
855 *
856 * For classes/interfaces, use the class/interface name
857 * as the array key.
858 *
859 * All other files/directories should not have a key.
860 *
861 * @since 6.2.0
862 *
863 * @global string[] $_old_requests_files
864 * @var string[]
865 * @name $_old_requests_files
866 */
867global $_old_requests_files;
868
869$_old_requests_files = array(
870 // Interfaces.
871 'Requests_Auth' => 'wp-includes/Requests/Auth.php',
872 'Requests_Hooker' => 'wp-includes/Requests/Hooker.php',
873 'Requests_Proxy' => 'wp-includes/Requests/Proxy.php',
874 'Requests_Transport' => 'wp-includes/Requests/Transport.php',
875
876 // Classes.
877 'Requests_Auth_Basic' => 'wp-includes/Requests/Auth/Basic.php',
878 'Requests_Cookie_Jar' => 'wp-includes/Requests/Cookie/Jar.php',
879 'Requests_Exception_HTTP' => 'wp-includes/Requests/Exception/HTTP.php',
880 'Requests_Exception_Transport' => 'wp-includes/Requests/Exception/Transport.php',
881 'Requests_Exception_HTTP_304' => 'wp-includes/Requests/Exception/HTTP/304.php',
882 'Requests_Exception_HTTP_305' => 'wp-includes/Requests/Exception/HTTP/305.php',
883 'Requests_Exception_HTTP_306' => 'wp-includes/Requests/Exception/HTTP/306.php',
884 'Requests_Exception_HTTP_400' => 'wp-includes/Requests/Exception/HTTP/400.php',
885 'Requests_Exception_HTTP_401' => 'wp-includes/Requests/Exception/HTTP/401.php',
886 'Requests_Exception_HTTP_402' => 'wp-includes/Requests/Exception/HTTP/402.php',
887 'Requests_Exception_HTTP_403' => 'wp-includes/Requests/Exception/HTTP/403.php',
888 'Requests_Exception_HTTP_404' => 'wp-includes/Requests/Exception/HTTP/404.php',
889 'Requests_Exception_HTTP_405' => 'wp-includes/Requests/Exception/HTTP/405.php',
890 'Requests_Exception_HTTP_406' => 'wp-includes/Requests/Exception/HTTP/406.php',
891 'Requests_Exception_HTTP_407' => 'wp-includes/Requests/Exception/HTTP/407.php',
892 'Requests_Exception_HTTP_408' => 'wp-includes/Requests/Exception/HTTP/408.php',
893 'Requests_Exception_HTTP_409' => 'wp-includes/Requests/Exception/HTTP/409.php',
894 'Requests_Exception_HTTP_410' => 'wp-includes/Requests/Exception/HTTP/410.php',
895 'Requests_Exception_HTTP_411' => 'wp-includes/Requests/Exception/HTTP/411.php',
896 'Requests_Exception_HTTP_412' => 'wp-includes/Requests/Exception/HTTP/412.php',
897 'Requests_Exception_HTTP_413' => 'wp-includes/Requests/Exception/HTTP/413.php',
898 'Requests_Exception_HTTP_414' => 'wp-includes/Requests/Exception/HTTP/414.php',
899 'Requests_Exception_HTTP_415' => 'wp-includes/Requests/Exception/HTTP/415.php',
900 'Requests_Exception_HTTP_416' => 'wp-includes/Requests/Exception/HTTP/416.php',
901 'Requests_Exception_HTTP_417' => 'wp-includes/Requests/Exception/HTTP/417.php',
902 'Requests_Exception_HTTP_418' => 'wp-includes/Requests/Exception/HTTP/418.php',
903 'Requests_Exception_HTTP_428' => 'wp-includes/Requests/Exception/HTTP/428.php',
904 'Requests_Exception_HTTP_429' => 'wp-includes/Requests/Exception/HTTP/429.php',
905 'Requests_Exception_HTTP_431' => 'wp-includes/Requests/Exception/HTTP/431.php',
906 'Requests_Exception_HTTP_500' => 'wp-includes/Requests/Exception/HTTP/500.php',
907 'Requests_Exception_HTTP_501' => 'wp-includes/Requests/Exception/HTTP/501.php',
908 'Requests_Exception_HTTP_502' => 'wp-includes/Requests/Exception/HTTP/502.php',
909 'Requests_Exception_HTTP_503' => 'wp-includes/Requests/Exception/HTTP/503.php',
910 'Requests_Exception_HTTP_504' => 'wp-includes/Requests/Exception/HTTP/504.php',
911 'Requests_Exception_HTTP_505' => 'wp-includes/Requests/Exception/HTTP/505.php',
912 'Requests_Exception_HTTP_511' => 'wp-includes/Requests/Exception/HTTP/511.php',
913 'Requests_Exception_HTTP_Unknown' => 'wp-includes/Requests/Exception/HTTP/Unknown.php',
914 'Requests_Exception_Transport_cURL' => 'wp-includes/Requests/Exception/Transport/cURL.php',
915 'Requests_Proxy_HTTP' => 'wp-includes/Requests/Proxy/HTTP.php',
916 'Requests_Response_Headers' => 'wp-includes/Requests/Response/Headers.php',
917 'Requests_Transport_cURL' => 'wp-includes/Requests/Transport/cURL.php',
918 'Requests_Transport_fsockopen' => 'wp-includes/Requests/Transport/fsockopen.php',
919 'Requests_Utility_CaseInsensitiveDictionary' => 'wp-includes/Requests/Utility/CaseInsensitiveDictionary.php',
920 'Requests_Utility_FilteredIterator' => 'wp-includes/Requests/Utility/FilteredIterator.php',
921 'Requests_Cookie' => 'wp-includes/Requests/Cookie.php',
922 'Requests_Exception' => 'wp-includes/Requests/Exception.php',
923 'Requests_Hooks' => 'wp-includes/Requests/Hooks.php',
924 'Requests_IDNAEncoder' => 'wp-includes/Requests/IDNAEncoder.php',
925 'Requests_IPv6' => 'wp-includes/Requests/IPv6.php',
926 'Requests_IRI' => 'wp-includes/Requests/IRI.php',
927 'Requests_Response' => 'wp-includes/Requests/Response.php',
928 'Requests_SSL' => 'wp-includes/Requests/SSL.php',
929 'Requests_Session' => 'wp-includes/Requests/Session.php',
930
931 // Directories.
932 'wp-includes/Requests/Auth/',
933 'wp-includes/Requests/Cookie/',
934 'wp-includes/Requests/Exception/HTTP/',
935 'wp-includes/Requests/Exception/Transport/',
936 'wp-includes/Requests/Exception/',
937 'wp-includes/Requests/Proxy/',
938 'wp-includes/Requests/Response/',
939 'wp-includes/Requests/Transport/',
940 'wp-includes/Requests/Utility/',
941);
942
943/**
944 * Stores new files in wp-content to copy
945 *
946 * The contents of this array indicate any new bundled plugins/themes which
947 * should be installed with the WordPress Upgrade. These items will not be
948 * re-installed in future upgrades, this behavior is controlled by the
949 * introduced version present here being older than the current installed version.
950 *
951 * The content of this array should follow the following format:
952 * Filename (relative to wp-content) => Introduced version
953 * Directories should be noted by suffixing it with a trailing slash (/)
954 *
955 * @since 3.2.0
956 * @since 4.7.0 New themes were not automatically installed for 4.4-4.6 on
957 * upgrade. New themes are now installed again. To disable new
958 * themes from being installed on upgrade, explicitly define
959 * CORE_UPGRADE_SKIP_NEW_BUNDLED as true.
960 * @global string[] $_new_bundled_files
961 * @var string[]
962 * @name $_new_bundled_files
963 */
964global $_new_bundled_files;
965
966$_new_bundled_files = array(
967 'plugins/akismet/' => '2.0',
968 'themes/twentyten/' => '3.0',
969 'themes/twentyeleven/' => '3.2',
970 'themes/twentytwelve/' => '3.5',
971 'themes/twentythirteen/' => '3.6',
972 'themes/twentyfourteen/' => '3.8',
973 'themes/twentyfifteen/' => '4.1',
974 'themes/twentysixteen/' => '4.4',
975 'themes/twentyseventeen/' => '4.7',
976 'themes/twentynineteen/' => '5.0',
977 'themes/twentytwenty/' => '5.3',
978 'themes/twentytwentyone/' => '5.6',
979 'themes/twentytwentytwo/' => '5.9',
980 'themes/twentytwentythree/' => '6.1',
981 'themes/twentytwentyfour/' => '6.4',
982 'themes/twentytwentyfive/' => '6.7',
983);
984
985/**
986 * Upgrades the core of WordPress.
987 *
988 * This will create a .maintenance file at the base of the WordPress directory
989 * to ensure that people can not access the website, when the files are being
990 * copied to their locations.
991 *
992 * The files in the `$_old_files` list will be removed and the new files
993 * copied from the zip file after the database is upgraded.
994 *
995 * The files in the `$_new_bundled_files` list will be added to the installation
996 * if the version is greater than or equal to the old version being upgraded.
997 *
998 * The steps for the upgrader for after the new release is downloaded and
999 * unzipped is:
1000 *
1001 * 1. Test unzipped location for select files to ensure that unzipped worked.
1002 * 2. Create the .maintenance file in current WordPress base.
1003 * 3. Copy new WordPress directory over old WordPress files.
1004 * 4. Upgrade WordPress to new version.
1005 * 1. Copy all files/folders other than wp-content
1006 * 2. Copy any language files to `WP_LANG_DIR` (which may differ from `WP_CONTENT_DIR`
1007 * 3. Copy any new bundled themes/plugins to their respective locations
1008 * 5. Delete new WordPress directory path.
1009 * 6. Delete .maintenance file.
1010 * 7. Remove old files.
1011 * 8. Delete 'update_core' option.
1012 *
1013 * There are several areas of failure. For instance if PHP times out before step
1014 * 6, then you will not be able to access any portion of your site. Also, since
1015 * the upgrade will not continue where it left off, you will not be able to
1016 * automatically remove old files and remove the 'update_core' option. This
1017 * isn't that bad.
1018 *
1019 * If the copy of the new WordPress over the old fails, then the worse is that
1020 * the new WordPress directory will remain.
1021 *
1022 * If it is assumed that every file will be copied over, including plugins and
1023 * themes, then if you edit the default theme, you should rename it, so that
1024 * your changes remain.
1025 *
1026 * @since 2.7.0
1027 *
1028 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
1029 * @global string[] $_old_files
1030 * @global string[] $_old_requests_files
1031 * @global string[] $_new_bundled_files
1032 * @global wpdb $wpdb WordPress database abstraction object.
1033 * @global string $wp_version The WordPress version string.
1034 *
1035 * @param string $from New release unzipped path.
1036 * @param string $to Path to old WordPress installation.
1037 * @return string|WP_Error New WordPress version on success, WP_Error on failure.
1038 */
1039function update_core( $from, $to ) {
1040 global $wp_filesystem, $_old_files, $_old_requests_files, $_new_bundled_files, $wpdb;
1041
1042 /*
1043 * Give core update script an additional 300 seconds (5 minutes)
1044 * to finish updating large files when running on slower servers.
1045 */
1046 if ( function_exists( 'set_time_limit' ) ) {
1047 set_time_limit( 300 );
1048 }
1049
1050 /*
1051 * Merge the old Requests files and directories into the `$_old_files`.
1052 * Then preload these Requests files first, before the files are deleted
1053 * and replaced to ensure the code is in memory if needed.
1054 */
1055 $_old_files = array_merge( $_old_files, array_values( $_old_requests_files ) );
1056 _preload_old_requests_classes_and_interfaces( $to );
1057
1058 /**
1059 * Filters feedback messages displayed during the core update process.
1060 *
1061 * The filter is first evaluated after the zip file for the latest version
1062 * has been downloaded and unzipped. It is evaluated five more times during
1063 * the process:
1064 *
1065 * 1. Before WordPress begins the core upgrade process.
1066 * 2. Before Maintenance Mode is enabled.
1067 * 3. Before WordPress begins copying over the necessary files.
1068 * 4. Before Maintenance Mode is disabled.
1069 * 5. Before the database is upgraded.
1070 *
1071 * @since 2.5.0
1072 *
1073 * @param string $feedback The core update feedback messages.
1074 */
1075 apply_filters( 'update_feedback', __( 'Verifying the unpacked files…' ) );
1076
1077 // Confidence check the unzipped distribution.
1078 $distro = '';
1079 $roots = array( '/wordpress/', '/wordpress-mu/' );
1080
1081 foreach ( $roots as $root ) {
1082 if ( $wp_filesystem->exists( $from . $root . 'readme.html' )
1083 && $wp_filesystem->exists( $from . $root . 'wp-includes/version.php' )
1084 ) {
1085 $distro = $root;
1086 break;
1087 }
1088 }
1089
1090 if ( ! $distro ) {
1091 $wp_filesystem->delete( $from, true );
1092
1093 return new WP_Error( 'insane_distro', __( 'The update could not be unpacked' ) );
1094 }
1095
1096 /*
1097 * Import $wp_version, $required_php_version, $required_php_extensions, and $required_mysql_version from the new version.
1098 * DO NOT globalize any variables imported from `version-current.php` in this function.
1099 *
1100 * BC Note: $wp_filesystem->wp_content_dir() returned unslashed pre-2.8.
1101 */
1102 $versions_file = trailingslashit( $wp_filesystem->wp_content_dir() ) . 'upgrade/version-current.php';
1103
1104 if ( ! $wp_filesystem->copy( $from . $distro . 'wp-includes/version.php', $versions_file ) ) {
1105 $wp_filesystem->delete( $from, true );
1106
1107 return new WP_Error(
1108 'copy_failed_for_version_file',
1109 __( 'The update cannot be installed because some files could not be copied. This is usually due to inconsistent file permissions.' ),
1110 'wp-includes/version.php'
1111 );
1112 }
1113
1114 $wp_filesystem->chmod( $versions_file, FS_CHMOD_FILE );
1115
1116 /*
1117 * `wp_opcache_invalidate()` only exists in WordPress 5.5 or later,
1118 * so don't run it when upgrading from older versions.
1119 */
1120 if ( function_exists( 'wp_opcache_invalidate' ) ) {
1121 wp_opcache_invalidate( $versions_file );
1122 }
1123
1124 require WP_CONTENT_DIR . '/upgrade/version-current.php';
1125 $wp_filesystem->delete( $versions_file );
1126
1127 $php_version = PHP_VERSION;
1128 $mysql_version = $wpdb->db_version();
1129 $old_wp_version = $GLOBALS['wp_version']; // The version of WordPress we're updating from.
1130 /*
1131 * Note: str_contains() is not used here, as this file is included
1132 * when updating from older WordPress versions, in which case
1133 * the polyfills from wp-includes/compat.php may not be available.
1134 */
1135 $development_build = ( false !== strpos( $old_wp_version . $wp_version, '-' ) ); // A dash in the version indicates a development release.
1136 $php_compat = version_compare( $php_version, $required_php_version, '>=' );
1137
1138 if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) ) {
1139 $mysql_compat = true;
1140 } else {
1141 $mysql_compat = version_compare( $mysql_version, $required_mysql_version, '>=' );
1142 }
1143
1144 if ( ! $mysql_compat || ! $php_compat ) {
1145 $wp_filesystem->delete( $from, true );
1146 }
1147
1148 $php_update_message = '';
1149
1150 if ( function_exists( 'wp_get_update_php_url' ) ) {
1151 $php_update_message = '</p><p>' . sprintf(
1152 /* translators: %s: URL to Update PHP page. */
1153 __( '<a href="%s">Learn more about updating PHP</a>.' ),
1154 esc_url( wp_get_update_php_url() )
1155 );
1156
1157 if ( function_exists( 'wp_get_update_php_annotation' ) ) {
1158 $annotation = wp_get_update_php_annotation();
1159
1160 if ( $annotation ) {
1161 $php_update_message .= '</p><p><em>' . $annotation . '</em>';
1162 }
1163 }
1164 }
1165
1166 if ( ! $mysql_compat && ! $php_compat ) {
1167 return new WP_Error(
1168 'php_mysql_not_compatible',
1169 sprintf(
1170 /* translators: 1: WordPress version number, 2: Minimum required PHP version number, 3: Minimum required MySQL version number, 4: Current PHP version number, 5: Current MySQL version number. */
1171 __( 'The update cannot be installed because WordPress %1$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.' ),
1172 $wp_version,
1173 $required_php_version,
1174 $required_mysql_version,
1175 $php_version,
1176 $mysql_version
1177 ) . $php_update_message
1178 );
1179 } elseif ( ! $php_compat ) {
1180 return new WP_Error(
1181 'php_not_compatible',
1182 sprintf(
1183 /* translators: 1: WordPress version number, 2: Minimum required PHP version number, 3: Current PHP version number. */
1184 __( 'The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher. You are running version %3$s.' ),
1185 $wp_version,
1186 $required_php_version,
1187 $php_version
1188 ) . $php_update_message
1189 );
1190 } elseif ( ! $mysql_compat ) {
1191 return new WP_Error(
1192 'mysql_not_compatible',
1193 sprintf(
1194 /* translators: 1: WordPress version number, 2: Minimum required MySQL version number, 3: Current MySQL version number. */
1195 __( 'The update cannot be installed because WordPress %1$s requires MySQL version %2$s or higher. You are running version %3$s.' ),
1196 $wp_version,
1197 $required_mysql_version,
1198 $mysql_version
1199 )
1200 );
1201 }
1202
1203 if ( isset( $required_php_extensions ) && is_array( $required_php_extensions ) ) {
1204 $missing_extensions = new WP_Error();
1205
1206 foreach ( $required_php_extensions as $extension ) {
1207 if ( extension_loaded( $extension ) ) {
1208 continue;
1209 }
1210
1211 $missing_extensions->add(
1212 "php_not_compatible_{$extension}",
1213 sprintf(
1214 /* translators: 1: WordPress version number, 2: The PHP extension name needed. */
1215 __( 'The update cannot be installed because WordPress %1$s requires the %2$s PHP extension.' ),
1216 $wp_version,
1217 $extension
1218 )
1219 );
1220 }
1221
1222 // Add a warning when required PHP extensions are missing.
1223 if ( ! empty( $missing_extensions->errors ) ) {
1224 return $missing_extensions;
1225 }
1226 }
1227
1228 /** This filter is documented in wp-admin/includes/update-core.php */
1229 apply_filters( 'update_feedback', __( 'Preparing to install the latest version…' ) );
1230
1231 /*
1232 * Don't copy wp-content, we'll deal with that below.
1233 * We also copy version.php last so failed updates report their old version.
1234 */
1235 $skip = array( 'wp-content', 'wp-includes/version.php' );
1236 $check_is_writable = array();
1237
1238 // Check to see which files don't really need updating - only available for 3.7 and higher.
1239 if ( function_exists( 'get_core_checksums' ) ) {
1240 // Find the local version of the working directory.
1241 $working_dir_local = WP_CONTENT_DIR . '/upgrade/' . basename( $from ) . $distro;
1242
1243 $checksums = get_core_checksums( $wp_version, isset( $wp_local_package ) ? $wp_local_package : 'en_US' );
1244
1245 if ( is_array( $checksums ) && isset( $checksums[ $wp_version ] ) ) {
1246 $checksums = $checksums[ $wp_version ]; // Compat code for 3.7-beta2.
1247 }
1248
1249 if ( is_array( $checksums ) ) {
1250 foreach ( $checksums as $file => $checksum ) {
1251 /*
1252 * Note: str_starts_with() is not used here, as this file is included
1253 * when updating from older WordPress versions, in which case
1254 * the polyfills from wp-includes/compat.php may not be available.
1255 */
1256 if ( 'wp-content' === substr( $file, 0, 10 ) ) {
1257 continue;
1258 }
1259
1260 if ( ! file_exists( ABSPATH . $file ) ) {
1261 continue;
1262 }
1263
1264 if ( ! file_exists( $working_dir_local . $file ) ) {
1265 continue;
1266 }
1267
1268 if ( '.' === dirname( $file )
1269 && in_array( pathinfo( $file, PATHINFO_EXTENSION ), array( 'html', 'txt' ), true )
1270 ) {
1271 continue;
1272 }
1273
1274 if ( md5_file( ABSPATH . $file ) === $checksum ) {
1275 $skip[] = $file;
1276 } else {
1277 $check_is_writable[ $file ] = ABSPATH . $file;
1278 }
1279 }
1280 }
1281 }
1282
1283 // If we're using the direct method, we can predict write failures that are due to permissions.
1284 if ( $check_is_writable && 'direct' === $wp_filesystem->method ) {
1285 $files_writable = array_filter( $check_is_writable, array( $wp_filesystem, 'is_writable' ) );
1286
1287 if ( $files_writable !== $check_is_writable ) {
1288 $files_not_writable = array_diff_key( $check_is_writable, $files_writable );
1289
1290 foreach ( $files_not_writable as $relative_file_not_writable => $file_not_writable ) {
1291 // If the writable check failed, chmod file to 0644 and try again, same as copy_dir().
1292 $wp_filesystem->chmod( $file_not_writable, FS_CHMOD_FILE );
1293
1294 if ( $wp_filesystem->is_writable( $file_not_writable ) ) {
1295 unset( $files_not_writable[ $relative_file_not_writable ] );
1296 }
1297 }
1298
1299 // Store package-relative paths (the key) of non-writable files in the WP_Error object.
1300 $error_data = version_compare( $old_wp_version, '3.7-beta2', '>' ) ? array_keys( $files_not_writable ) : '';
1301
1302 if ( $files_not_writable ) {
1303 return new WP_Error(
1304 'files_not_writable',
1305 __( 'The update cannot be installed because your site is unable to copy some files. This is usually due to inconsistent file permissions.' ),
1306 implode( ', ', $error_data )
1307 );
1308 }
1309 }
1310 }
1311
1312 /** This filter is documented in wp-admin/includes/update-core.php */
1313 apply_filters( 'update_feedback', __( 'Enabling Maintenance mode…' ) );
1314
1315 // Create maintenance file to signal that we are upgrading.
1316 $maintenance_string = '<?php $upgrading = ' . time() . '; ?>';
1317 $maintenance_file = $to . '.maintenance';
1318 $wp_filesystem->delete( $maintenance_file );
1319 $wp_filesystem->put_contents( $maintenance_file, $maintenance_string, FS_CHMOD_FILE );
1320
1321 /** This filter is documented in wp-admin/includes/update-core.php */
1322 apply_filters( 'update_feedback', __( 'Copying the required files…' ) );
1323
1324 // Copy new versions of WP files into place.
1325 $result = copy_dir( $from . $distro, $to, $skip );
1326
1327 if ( is_wp_error( $result ) ) {
1328 $result = new WP_Error(
1329 $result->get_error_code(),
1330 $result->get_error_message(),
1331 substr( $result->get_error_data(), strlen( $to ) )
1332 );
1333 }
1334
1335 // Since we know the core files have copied over, we can now copy the version file.
1336 if ( ! is_wp_error( $result ) ) {
1337 if ( ! $wp_filesystem->copy( $from . $distro . 'wp-includes/version.php', $to . 'wp-includes/version.php', true /* overwrite */ ) ) {
1338 $wp_filesystem->delete( $from, true );
1339 $result = new WP_Error(
1340 'copy_failed_for_version_file',
1341 __( 'The update cannot be installed because your site is unable to copy some files. This is usually due to inconsistent file permissions.' ),
1342 'wp-includes/version.php'
1343 );
1344 }
1345
1346 $wp_filesystem->chmod( $to . 'wp-includes/version.php', FS_CHMOD_FILE );
1347
1348 /*
1349 * `wp_opcache_invalidate()` only exists in WordPress 5.5 or later,
1350 * so don't run it when upgrading from older versions.
1351 */
1352 if ( function_exists( 'wp_opcache_invalidate' ) ) {
1353 wp_opcache_invalidate( $to . 'wp-includes/version.php' );
1354 }
1355 }
1356
1357 // Check to make sure everything copied correctly, ignoring the contents of wp-content.
1358 $skip = array( 'wp-content' );
1359 $failed = array();
1360
1361 if ( isset( $checksums ) && is_array( $checksums ) ) {
1362 foreach ( $checksums as $file => $checksum ) {
1363 /*
1364 * Note: str_starts_with() is not used here, as this file is included
1365 * when updating from older WordPress versions, in which case
1366 * the polyfills from wp-includes/compat.php may not be available.
1367 */
1368 if ( 'wp-content' === substr( $file, 0, 10 ) ) {
1369 continue;
1370 }
1371
1372 if ( ! file_exists( $working_dir_local . $file ) ) {
1373 continue;
1374 }
1375
1376 if ( '.' === dirname( $file )
1377 && in_array( pathinfo( $file, PATHINFO_EXTENSION ), array( 'html', 'txt' ), true )
1378 ) {
1379 $skip[] = $file;
1380 continue;
1381 }
1382
1383 if ( file_exists( ABSPATH . $file ) && md5_file( ABSPATH . $file ) === $checksum ) {
1384 $skip[] = $file;
1385 } else {
1386 $failed[] = $file;
1387 }
1388 }
1389 }
1390
1391 // Some files didn't copy properly.
1392 if ( ! empty( $failed ) ) {
1393 $total_size = 0;
1394
1395 foreach ( $failed as $file ) {
1396 if ( file_exists( $working_dir_local . $file ) ) {
1397 $total_size += filesize( $working_dir_local . $file );
1398 }
1399 }
1400
1401 /*
1402 * If we don't have enough free space, it isn't worth trying again.
1403 * Unlikely to be hit due to the check in unzip_file().
1404 */
1405 $available_space = function_exists( 'disk_free_space' ) ? @disk_free_space( ABSPATH ) : false;
1406
1407 if ( $available_space && $total_size >= $available_space ) {
1408 $result = new WP_Error( 'disk_full', __( 'There is not enough free disk space to complete the update.' ) );
1409 } else {
1410 $result = copy_dir( $from . $distro, $to, $skip );
1411
1412 if ( is_wp_error( $result ) ) {
1413 $result = new WP_Error(
1414 $result->get_error_code() . '_retry',
1415 $result->get_error_message(),
1416 substr( $result->get_error_data(), strlen( $to ) )
1417 );
1418 }
1419 }
1420 }
1421
1422 /*
1423 * Custom content directory needs updating now.
1424 * Copy languages.
1425 */
1426 if ( ! is_wp_error( $result ) && $wp_filesystem->is_dir( $from . $distro . 'wp-content/languages' ) ) {
1427 if ( WP_LANG_DIR !== ABSPATH . WPINC . '/languages' || @is_dir( WP_LANG_DIR ) ) {
1428 $lang_dir = WP_LANG_DIR;
1429 } else {
1430 $lang_dir = WP_CONTENT_DIR . '/languages';
1431 }
1432 /*
1433 * Note: str_starts_with() is not used here, as this file is included
1434 * when updating from older WordPress versions, in which case
1435 * the polyfills from wp-includes/compat.php may not be available.
1436 */
1437 // Check if the language directory exists first.
1438 if ( ! @is_dir( $lang_dir ) && 0 === strpos( $lang_dir, ABSPATH ) ) {
1439 // If it's within the ABSPATH we can handle it here, otherwise they're out of luck.
1440 $wp_filesystem->mkdir( $to . str_replace( ABSPATH, '', $lang_dir ), FS_CHMOD_DIR );
1441 clearstatcache(); // For FTP, need to clear the stat cache.
1442 }
1443
1444 if ( @is_dir( $lang_dir ) ) {
1445 $wp_lang_dir = $wp_filesystem->find_folder( $lang_dir );
1446
1447 if ( $wp_lang_dir ) {
1448 $result = copy_dir( $from . $distro . 'wp-content/languages/', $wp_lang_dir );
1449
1450 if ( is_wp_error( $result ) ) {
1451 $result = new WP_Error(
1452 $result->get_error_code() . '_languages',
1453 $result->get_error_message(),
1454 substr( $result->get_error_data(), strlen( $wp_lang_dir ) )
1455 );
1456 }
1457 }
1458 }
1459 }
1460
1461 /** This filter is documented in wp-admin/includes/update-core.php */
1462 apply_filters( 'update_feedback', __( 'Disabling Maintenance mode…' ) );
1463
1464 // Remove maintenance file, we're done with potential site-breaking changes.
1465 $wp_filesystem->delete( $maintenance_file );
1466
1467 /*
1468 * 3.5 -> 3.5+ - an empty twentytwelve directory was created upon upgrade to 3.5 for some users,
1469 * preventing installation of Twenty Twelve.
1470 */
1471 if ( '3.5' === $old_wp_version ) {
1472 if ( is_dir( WP_CONTENT_DIR . '/themes/twentytwelve' )
1473 && ! file_exists( WP_CONTENT_DIR . '/themes/twentytwelve/style.css' )
1474 ) {
1475 $wp_filesystem->delete( $wp_filesystem->wp_themes_dir() . 'twentytwelve/' );
1476 }
1477 }
1478
1479 /*
1480 * Copy new bundled plugins & themes.
1481 * This gives us the ability to install new plugins & themes bundled with
1482 * future versions of WordPress whilst avoiding the re-install upon upgrade issue.
1483 * $development_build controls us overwriting bundled themes and plugins when a non-stable release is being updated.
1484 */
1485 if ( ! is_wp_error( $result )
1486 && ( ! defined( 'CORE_UPGRADE_SKIP_NEW_BUNDLED' ) || ! CORE_UPGRADE_SKIP_NEW_BUNDLED )
1487 ) {
1488 foreach ( (array) $_new_bundled_files as $file => $introduced_version ) {
1489 // If a $development_build or if $introduced version is greater than what the site was previously running.
1490 if ( $development_build || version_compare( $introduced_version, $old_wp_version, '>' ) ) {
1491 $directory = ( '/' === $file[ strlen( $file ) - 1 ] );
1492
1493 list( $type, $filename ) = explode( '/', $file, 2 );
1494
1495 // Check to see if the bundled items exist before attempting to copy them.
1496 if ( ! $wp_filesystem->exists( $from . $distro . 'wp-content/' . $file ) ) {
1497 continue;
1498 }
1499
1500 if ( 'plugins' === $type ) {
1501 $dest = $wp_filesystem->wp_plugins_dir();
1502 } elseif ( 'themes' === $type ) {
1503 // Back-compat, ::wp_themes_dir() did not return trailingslash'd pre-3.2.
1504 $dest = trailingslashit( $wp_filesystem->wp_themes_dir() );
1505 } else {
1506 continue;
1507 }
1508
1509 if ( ! $directory ) {
1510 if ( ! $development_build && $wp_filesystem->exists( $dest . $filename ) ) {
1511 continue;
1512 }
1513
1514 if ( ! $wp_filesystem->copy( $from . $distro . 'wp-content/' . $file, $dest . $filename, FS_CHMOD_FILE ) ) {
1515 $result = new WP_Error( "copy_failed_for_new_bundled_$type", __( 'Could not copy file.' ), $dest . $filename );
1516 }
1517 } else {
1518 if ( ! $development_build && $wp_filesystem->is_dir( $dest . $filename ) ) {
1519 continue;
1520 }
1521
1522 $wp_filesystem->mkdir( $dest . $filename, FS_CHMOD_DIR );
1523 $_result = copy_dir( $from . $distro . 'wp-content/' . $file, $dest . $filename );
1524
1525 /*
1526 * If an error occurs partway through this final step,
1527 * keep the error flowing through, but keep the process going.
1528 */
1529 if ( is_wp_error( $_result ) ) {
1530 if ( ! is_wp_error( $result ) ) {
1531 $result = new WP_Error();
1532 }
1533
1534 $result->add(
1535 $_result->get_error_code() . "_$type",
1536 $_result->get_error_message(),
1537 substr( $_result->get_error_data(), strlen( $dest ) )
1538 );
1539 }
1540 }
1541 }
1542 } // End foreach.
1543 }
1544
1545 // Handle $result error from the above blocks.
1546 if ( is_wp_error( $result ) ) {
1547 $wp_filesystem->delete( $from, true );
1548
1549 return $result;
1550 }
1551
1552 // Remove old files.
1553 foreach ( $_old_files as $old_file ) {
1554 $old_file = $to . $old_file;
1555
1556 if ( ! $wp_filesystem->exists( $old_file ) ) {
1557 continue;
1558 }
1559
1560 // If the file isn't deleted, try writing an empty string to the file instead.
1561 if ( ! $wp_filesystem->delete( $old_file, true ) && $wp_filesystem->is_file( $old_file ) ) {
1562 $wp_filesystem->put_contents( $old_file, '' );
1563 }
1564 }
1565
1566 // Remove any Genericons example.html's from the filesystem.
1567 _upgrade_422_remove_genericons();
1568
1569 // Deactivate the REST API plugin if its version is 2.0 Beta 4 or lower.
1570 _upgrade_440_force_deactivate_incompatible_plugins();
1571
1572 // Deactivate incompatible plugins.
1573 _upgrade_core_deactivate_incompatible_plugins();
1574
1575 // Upgrade DB with separate request.
1576 /** This filter is documented in wp-admin/includes/update-core.php */
1577 apply_filters( 'update_feedback', __( 'Upgrading database…' ) );
1578
1579 $db_upgrade_url = admin_url( 'upgrade.php?step=upgrade_db' );
1580 wp_remote_post( $db_upgrade_url, array( 'timeout' => 60 ) );
1581
1582 // Clear the cache to prevent an update_option() from saving a stale db_version to the cache.
1583 wp_cache_flush();
1584 // Not all cache back ends listen to 'flush'.
1585 wp_cache_delete( 'alloptions', 'options' );
1586
1587 // Remove working directory.
1588 $wp_filesystem->delete( $from, true );
1589
1590 // Force refresh of update information.
1591 if ( function_exists( 'delete_site_transient' ) ) {
1592 delete_site_transient( 'update_core' );
1593 } else {
1594 delete_option( 'update_core' );
1595 }
1596
1597 /**
1598 * Fires after WordPress core has been successfully updated.
1599 *
1600 * @since 3.3.0
1601 *
1602 * @param string $wp_version The current WordPress version.
1603 */
1604 do_action( '_core_updated_successfully', $wp_version );
1605
1606 // Clear the option that blocks auto-updates after failures, now that we've been successful.
1607 if ( function_exists( 'delete_site_option' ) ) {
1608 delete_site_option( 'auto_core_update_failed' );
1609 }
1610
1611 return $wp_version;
1612}
1613
1614/**
1615 * Preloads old Requests classes and interfaces.
1616 *
1617 * This function preloads the old Requests code into memory before the
1618 * upgrade process deletes the files. Why? Requests code is loaded into
1619 * memory via an autoloader, meaning when a class or interface is needed
1620 * If a request is in process, Requests could attempt to access code. If
1621 * the file is not there, a fatal error could occur. If the file was
1622 * replaced, the new code is not compatible with the old, resulting in
1623 * a fatal error. Preloading ensures the code is in memory before the
1624 * code is updated.
1625 *
1626 * @since 6.2.0
1627 *
1628 * @global string[] $_old_requests_files Requests files to be preloaded.
1629 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
1630 * @global string $wp_version The WordPress version string.
1631 *
1632 * @param string $to Path to old WordPress installation.
1633 */
1634function _preload_old_requests_classes_and_interfaces( $to ) {
1635 global $_old_requests_files, $wp_filesystem, $wp_version;
1636
1637 /*
1638 * Requests was introduced in WordPress 4.6.
1639 *
1640 * Skip preloading if the website was previously using
1641 * an earlier version of WordPress.
1642 */
1643 if ( version_compare( $wp_version, '4.6', '<' ) ) {
1644 return;
1645 }
1646
1647 if ( ! defined( 'REQUESTS_SILENCE_PSR0_DEPRECATIONS' ) ) {
1648 define( 'REQUESTS_SILENCE_PSR0_DEPRECATIONS', true );
1649 }
1650
1651 foreach ( $_old_requests_files as $name => $file ) {
1652 // Skip files that aren't interfaces or classes.
1653 if ( is_int( $name ) ) {
1654 continue;
1655 }
1656
1657 // Skip if it's already loaded.
1658 if ( class_exists( $name ) || interface_exists( $name ) ) {
1659 continue;
1660 }
1661
1662 // Skip if the file is missing.
1663 if ( ! $wp_filesystem->is_file( $to . $file ) ) {
1664 continue;
1665 }
1666
1667 require_once $to . $file;
1668 }
1669}
1670
1671/**
1672 * Redirect to the About WordPress page after a successful upgrade.
1673 *
1674 * This function is only needed when the existing installation is older than 3.4.0.
1675 *
1676 * @since 3.3.0
1677 *
1678 * @global string $wp_version The WordPress version string.
1679 * @global string $pagenow The filename of the current screen.
1680 * @global string $action
1681 *
1682 * @param string $new_version
1683 */
1684function _redirect_to_about_wordpress( $new_version ) {
1685 global $wp_version, $pagenow, $action;
1686
1687 if ( version_compare( $wp_version, '3.4-RC1', '>=' ) ) {
1688 return;
1689 }
1690
1691 // Ensure we only run this on the update-core.php page. The Core_Upgrader may be used in other contexts.
1692 if ( 'update-core.php' !== $pagenow ) {
1693 return;
1694 }
1695
1696 if ( 'do-core-upgrade' !== $action && 'do-core-reinstall' !== $action ) {
1697 return;
1698 }
1699
1700 // Load the updated default text localization domain for new strings.
1701 load_default_textdomain();
1702
1703 // See do_core_upgrade().
1704 show_message( __( 'WordPress updated successfully.' ) );
1705
1706 // self_admin_url() won't exist when upgrading from <= 3.0, so relative URLs are intentional.
1707 show_message(
1708 '<span class="hide-if-no-js">' . sprintf(
1709 /* translators: 1: WordPress version, 2: URL to About screen. */
1710 __( 'Welcome to WordPress %1$s. You will be redirected to the About WordPress screen. If not, click <a href="%2$s">here</a>.' ),
1711 $new_version,
1712 'about.php?updated'
1713 ) . '</span>'
1714 );
1715 show_message(
1716 '<span class="hide-if-js">' . sprintf(
1717 /* translators: 1: WordPress version, 2: URL to About screen. */
1718 __( 'Welcome to WordPress %1$s. <a href="%2$s">Learn more</a>.' ),
1719 $new_version,
1720 'about.php?updated'
1721 ) . '</span>'
1722 );
1723 echo '</div>';
1724 ?>
1725<script type="text/javascript">
1726window.location = 'about.php?updated';
1727</script>
1728 <?php
1729
1730 // Include admin-footer.php and exit.
1731 require_once ABSPATH . 'wp-admin/admin-footer.php';
1732 exit;
1733}
1734
1735/**
1736 * Cleans up Genericons example files.
1737 *
1738 * @since 4.2.2
1739 *
1740 * @global string[] $wp_theme_directories
1741 * @global WP_Filesystem_Base $wp_filesystem
1742 */
1743function _upgrade_422_remove_genericons() {
1744 global $wp_theme_directories, $wp_filesystem;
1745
1746 // A list of the affected files using the filesystem absolute paths.
1747 $affected_files = array();
1748
1749 // Themes.
1750 foreach ( $wp_theme_directories as $directory ) {
1751 $affected_theme_files = _upgrade_422_find_genericons_files_in_folder( $directory );
1752 $affected_files = array_merge( $affected_files, $affected_theme_files );
1753 }
1754
1755 // Plugins.
1756 $affected_plugin_files = _upgrade_422_find_genericons_files_in_folder( WP_PLUGIN_DIR );
1757 $affected_files = array_merge( $affected_files, $affected_plugin_files );
1758
1759 foreach ( $affected_files as $file ) {
1760 $gen_dir = $wp_filesystem->find_folder( trailingslashit( dirname( $file ) ) );
1761
1762 if ( empty( $gen_dir ) ) {
1763 continue;
1764 }
1765
1766 // The path when the file is accessed via WP_Filesystem may differ in the case of FTP.
1767 $remote_file = $gen_dir . basename( $file );
1768
1769 if ( ! $wp_filesystem->exists( $remote_file ) ) {
1770 continue;
1771 }
1772
1773 if ( ! $wp_filesystem->delete( $remote_file, false, 'f' ) ) {
1774 $wp_filesystem->put_contents( $remote_file, '' );
1775 }
1776 }
1777}
1778
1779/**
1780 * Recursively find Genericons example files in a given folder.
1781 *
1782 * @ignore
1783 * @since 4.2.2
1784 *
1785 * @param string $directory Directory path. Expects trailingslashed.
1786 * @return string[]
1787 */
1788function _upgrade_422_find_genericons_files_in_folder( $directory ) {
1789 $directory = trailingslashit( $directory );
1790 $files = array();
1791
1792 if ( file_exists( "{$directory}example.html" )
1793 /*
1794 * Note: str_contains() is not used here, as this file is included
1795 * when updating from older WordPress versions, in which case
1796 * the polyfills from wp-includes/compat.php may not be available.
1797 */
1798 && false !== strpos( file_get_contents( "{$directory}example.html" ), '<title>Genericons</title>' )
1799 ) {
1800 $files[] = "{$directory}example.html";
1801 }
1802
1803 $dirs = glob( $directory . '*', GLOB_ONLYDIR );
1804 $dirs = array_filter(
1805 $dirs,
1806 static function ( $dir ) {
1807 /*
1808 * Skip any node_modules directories.
1809 *
1810 * Note: str_contains() is not used here, as this file is included
1811 * when updating from older WordPress versions, in which case
1812 * the polyfills from wp-includes/compat.php may not be available.
1813 */
1814 return false === strpos( $dir, 'node_modules' );
1815 }
1816 );
1817
1818 if ( $dirs ) {
1819 foreach ( $dirs as $dir ) {
1820 $files = array_merge( $files, _upgrade_422_find_genericons_files_in_folder( $dir ) );
1821 }
1822 }
1823
1824 return $files;
1825}
1826
1827/**
1828 * @ignore
1829 * @since 4.4.0
1830 */
1831function _upgrade_440_force_deactivate_incompatible_plugins() {
1832 if ( defined( 'REST_API_VERSION' ) && version_compare( REST_API_VERSION, '2.0-beta4', '<=' ) ) {
1833 deactivate_plugins( array( 'rest-api/plugin.php' ), true );
1834 }
1835}
1836
1837/**
1838 * @access private
1839 * @ignore
1840 * @since 5.8.0
1841 * @since 5.9.0 The minimum compatible version of Gutenberg is 11.9.
1842 * @since 6.1.1 The minimum compatible version of Gutenberg is 14.1.
1843 * @since 6.4.0 The minimum compatible version of Gutenberg is 16.5.
1844 * @since 6.5.0 The minimum compatible version of Gutenberg is 17.6.
1845 */
1846function _upgrade_core_deactivate_incompatible_plugins() {
1847 if ( defined( 'GUTENBERG_VERSION' ) && version_compare( GUTENBERG_VERSION, '17.6', '<' ) ) {
1848 $deactivated_gutenberg['gutenberg'] = array(
1849 'plugin_name' => 'Gutenberg',
1850 'version_deactivated' => GUTENBERG_VERSION,
1851 'version_compatible' => '17.6',
1852 );
1853 if ( is_plugin_active_for_network( 'gutenberg/gutenberg.php' ) ) {
1854 $deactivated_plugins = get_site_option( 'wp_force_deactivated_plugins', array() );
1855 $deactivated_plugins = array_merge( $deactivated_plugins, $deactivated_gutenberg );
1856 update_site_option( 'wp_force_deactivated_plugins', $deactivated_plugins );
1857 } else {
1858 $deactivated_plugins = get_option( 'wp_force_deactivated_plugins', array() );
1859 $deactivated_plugins = array_merge( $deactivated_plugins, $deactivated_gutenberg );
1860 update_option( 'wp_force_deactivated_plugins', $deactivated_plugins, false );
1861 }
1862 deactivate_plugins( array( 'gutenberg/gutenberg.php' ), true );
1863 }
1864}
1865