Gecko [ actualbuzz.com ]

Name	Size	Permission	Date
ID3	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
IXR	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
PHPMailer	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
Requests	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
SimplePie	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
Text	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
assets	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
block-patterns	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
block-supports	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
blocks	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
certificates	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
css	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
customize	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
fonts	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
html-api	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
images	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
js	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
php-compat	[ DIR ]	drwxr-xr-x	2025-10-14 08:33
pomo	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
random_compat	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
rest-api	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
sitemaps	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
sodium_compat	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
style-engine	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
theme-compat	[ DIR ]	drwxr-xr-x	2025-10-17 03:27
widgets	[ DIR ]	drwxr-xr-x	2025-10-10 06:41
.htaccess	127 B	-r--r--r--	2025-10-10 06:41
admin-bar.php	33.55 KB	-rw-r--r--	2025-10-17 03:27
atomlib.php	11.67 KB	-rw-r--r--	2022-04-21 23:54
author-template.php	18.43 KB	-rw-r--r--	2023-03-02 05:09
block-editor.php	23.61 KB	-rw-r--r--	2023-03-02 01:13
block-i18n.json	316 B	-rw-r--r--	2021-08-11 21:38
block-patterns.php	15.07 KB	-rw-r--r--	2023-02-07 09:10
block-template-utils.php	44.99 KB	-rw-r--r--	2023-05-30 12:14
block-template.php	10.56 KB	-rw-r--r--	2023-05-30 12:14
blocks.php	52.09 KB	-rw-r--r--	2024-06-24 21:25
bookmark-template.php	12.6 KB	-rw-r--r--	2022-06-24 11:27
bookmark.php	15 KB	-rw-r--r--	2023-02-22 06:09
cache-compat.php	5.83 KB	-rw-r--r--	2022-10-11 06:52
cache.php	13.16 KB	-rw-r--r--	2022-10-11 06:52
canonical.php	32.55 KB	-rw-r--r--	2023-02-16 02:36
capabilities.php	39.06 KB	-rw-r--r--	2022-11-30 05:21
category-template.php	55.67 KB	-rw-r--r--	2023-02-05 04:48
category.php	12.4 KB	-rw-r--r--	2025-10-17 03:27
class-IXR.php	2.48 KB	-rw-r--r--	2020-02-06 20:03
class-feed.php	529 B	-rw-r--r--	2020-02-06 20:03
class-http.php	367 B	-rw-r--r--	2022-06-17 23:50
class-json.php	42.66 KB	-rw-r--r--	2023-02-04 03:05
class-oembed.php	401 B	-rw-r--r--	2022-06-17 23:50
class-phpass.php	6.55 KB	-rw-r--r--	2023-02-13 22:38
class-phpmailer.php	664 B	-rw-r--r--	2020-07-22 01:28
class-pop3.php	20.48 KB	-rw-r--r--	2023-02-12 02:13
class-requests.php	2.18 KB	-rw-r--r--	2022-12-16 11:02
class-simplepie.php	95.78 KB	-rw-r--r--	2023-02-04 03:05
class-smtp.php	457 B	-rw-r--r--	2021-01-27 03:15
class-snoopy.php	36.83 KB	-rw-r--r--	2023-02-04 03:05
class-walker-category-dropdown.php	2.42 KB	-rw-r--r--	2022-01-31 08:55
class-walker-category.php	8.27 KB	-rw-r--r--	2022-01-31 08:55
class-walker-comment.php	13.88 KB	-rw-r--r--	2022-01-31 08:55
class-walker-nav-menu.php	9.35 KB	-rw-r--r--	2023-02-08 03:35
class-walker-page-dropdown.php	2.64 KB	-rw-r--r--	2022-05-02 10:31
class-walker-page.php	7.42 KB	-rw-r--r--	2022-01-31 08:55
class-wp-admin-bar.php	17.08 KB	-rw-r--r--	2022-11-30 05:21
class-wp-ajax-response.php	5.14 KB	-rw-r--r--	2022-09-13 04:17
class-wp-application-passwords.php	11.97 KB	-rw-r--r--	2022-09-13 04:17
class-wp-block-editor-context.php	1.32 KB	-rw-r--r--	2022-09-13 04:17
class-wp-block-list.php	4.64 KB	-rw-r--r--	2022-09-13 04:17
class-wp-block-parser.php	14.89 KB	-rw-r--r--	2023-02-07 20:34
class-wp-block-pattern-categories-registry.php	5.25 KB	-rw-r--r--	2022-09-13 04:17
class-wp-block-patterns-registry.php	8.51 KB	-rw-r--r--	2023-10-17 05:25
class-wp-block-styles-registry.php	5.75 KB	-rw-r--r--	2022-09-13 04:17
class-wp-block-supports.php	5.37 KB	-rw-r--r--	2023-02-07 04:54
class-wp-block-template.php	1.8 KB	-rw-r--r--	2022-09-13 04:17
class-wp-block-type-registry.php	4.9 KB	-rw-r--r--	2023-10-17 05:25
class-wp-block-type.php	13.68 KB	-rw-r--r--	2022-11-30 10:30
class-wp-block.php	8.21 KB	-rw-r--r--	2022-11-24 11:00
class-wp-comment-query.php	46.55 KB	-rw-r--r--	2022-09-13 04:17
class-wp-comment.php	9.13 KB	-rw-r--r--	2022-09-13 04:17
class-wp-customize-control.php	25.22 KB	-rw-r--r--	2023-02-08 06:40
class-wp-customize-manager.php	197.39 KB	-rw-r--r--	2023-02-24 00:08
class-wp-customize-nav-menus.php	55.96 KB	-rw-r--r--	2023-02-08 06:40
class-wp-customize-panel.php	10.42 KB	-rw-r--r--	2023-02-08 06:40
class-wp-customize-section.php	10.98 KB	-rw-r--r--	2023-02-08 06:40
class-wp-customize-setting.php	29.19 KB	-rw-r--r--	2022-09-13 04:17
class-wp-customize-widgets.php	69.95 KB	-rw-r--r--	2023-02-08 06:40
class-wp-date-query.php	34.84 KB	-rw-r--r--	2022-11-09 02:59
class-wp-dependencies.php	13.73 KB	-rw-r--r--	2022-11-26 04:42
class-wp-dependency.php	2.57 KB	-rw-r--r--	2022-11-26 04:42
class-wp-editor.php	70.27 KB	-rw-r--r--	2023-02-22 06:09
class-wp-embed.php	15.61 KB	-rw-r--r--	2023-02-20 04:35
class-wp-error.php	7.33 KB	-rw-r--r--	2023-02-22 06:09
class-wp-fatal-error-handler.php	7.69 KB	-rw-r--r--	2023-02-24 00:08
class-wp-feed-cache-transient.php	2.53 KB	-rw-r--r--	2022-09-13 04:17
class-wp-feed-cache.php	996 B	-rw-r--r--	2022-09-13 04:17
class-wp-hook.php	15.35 KB	-rw-r--r--	2022-09-13 04:17
class-wp-http-cookie.php	7.24 KB	-rw-r--r--	2022-09-13 04:17
class-wp-http-curl.php	12.12 KB	-rw-r--r--	2022-09-13 04:17
class-wp-http-encoding.php	6.53 KB	-rw-r--r--	2022-09-13 04:17
class-wp-http-ixr-client.php	3.42 KB	-rw-r--r--	2022-09-13 04:17
class-wp-http-proxy.php	5.84 KB	-rw-r--r--	2022-10-22 09:42
class-wp-http-requests-hooks.php	1.97 KB	-rw-r--r--	2022-12-16 11:02
class-wp-http-requests-response.php	4.3 KB	-rw-r--r--	2022-12-16 11:02
class-wp-http-response.php	2.91 KB	-rw-r--r--	2022-09-13 04:17
class-wp-http-streams.php	16.31 KB	-rw-r--r--	2023-01-14 03:52
class-wp-http.php	39.41 KB	-rw-r--r--	2023-02-21 15:19
class-wp-image-editor-gd.php	16.18 KB	-rw-r--r--	2022-09-20 11:23
class-wp-image-editor-imagick.php	29.04 KB	-rw-r--r--	2023-02-23 03:55
class-wp-image-editor.php	16.66 KB	-rw-r--r--	2022-10-08 07:47
class-wp-list-util.php	7.27 KB	-rw-r--r--	2023-02-26 00:29
class-wp-locale-switcher.php	6.39 KB	-rw-r--r--	2023-02-09 06:38
class-wp-locale.php	15.73 KB	-rw-r--r--	2023-02-16 13:07
class-wp-matchesmapregex.php	1.78 KB	-rw-r--r--	2022-09-13 04:17
class-wp-meta-query.php	29.8 KB	-rw-r--r--	2023-02-22 06:09
class-wp-metadata-lazyloader.php	5.25 KB	-rw-r--r--	2022-09-13 04:17
class-wp-network-query.php	18.83 KB	-rw-r--r--	2022-10-19 06:46
class-wp-network.php	11.89 KB	-rw-r--r--	2022-09-21 02:56
class-wp-object-cache.php	17.18 KB	-rw-r--r--	2022-09-27 10:40
class-wp-oembed-controller.php	6.72 KB	-rw-r--r--	2022-11-14 03:21
class-wp-oembed.php	30.45 KB	-rw-r--r--	2023-02-24 00:08
class-wp-paused-extensions-storage.php	4.94 KB	-rw-r--r--	2022-09-13 04:17
class-wp-post-type.php	25.18 KB	-rw-r--r--	2022-09-27 10:40
class-wp-post.php	6.33 KB	-rw-r--r--	2022-09-13 04:17
class-wp-query.php	146.4 KB	-rw-r--r--	2023-05-30 12:14
class-wp-recovery-mode-cookie-service.php	6.72 KB	-rw-r--r--	2022-10-04 16:29
class-wp-recovery-mode-email-service.php	10.92 KB	-rw-r--r--	2023-01-30 23:57
class-wp-recovery-mode-key-service.php	4.4 KB	-rw-r--r--	2023-02-22 05:29
class-wp-recovery-mode-link-service.php	3.38 KB	-rw-r--r--	2022-09-13 04:17
class-wp-recovery-mode.php	11.16 KB	-rw-r--r--	2022-09-13 04:17
class-wp-rewrite.php	61.6 KB	-rw-r--r--	2022-10-05 11:31
class-wp-role.php	2.46 KB	-rw-r--r--	2022-09-13 04:17
class-wp-roles.php	8.38 KB	-rw-r--r--	2022-10-25 03:26
class-wp-scripts.php	18.86 KB	-rw-r--r--	2022-09-29 10:49
class-wp-session-tokens.php	7.28 KB	-rw-r--r--	2022-09-13 04:17
class-wp-simplepie-file.php	3.32 KB	-rw-r--r--	2022-09-13 04:17
class-wp-simplepie-sanitize-kses.php	1.76 KB	-rw-r--r--	2022-09-13 04:17
class-wp-site-query.php	30.22 KB	-rw-r--r--	2022-10-19 06:46
class-wp-site.php	7.28 KB	-rw-r--r--	2022-09-13 04:17
class-wp-styles.php	10.64 KB	-rw-r--r--	2022-09-29 03:29
class-wp-tax-query.php	19.06 KB	-rw-r--r--	2022-11-24 11:00
class-wp-taxonomy.php	18.03 KB	-rw-r--r--	2022-11-26 23:09
class-wp-term-query.php	39.48 KB	-rw-r--r--	2023-01-18 23:28
class-wp-term.php	5.17 KB	-rw-r--r--	2022-09-13 04:17
class-wp-text-diff-renderer-inline.php	830 B	-rw-r--r--	2023-01-31 04:54
class-wp-text-diff-renderer-table.php	16.76 KB	-rw-r--r--	2023-02-08 06:40
class-wp-textdomain-registry.php	5.83 KB	-rw-r--r--	2023-02-16 12:26
class-wp-theme-json-data.php	1.52 KB	-rw-r--r--	2022-10-12 03:30
class-wp-theme-json-resolver.php	23.41 KB	-rw-r--r--	2023-03-02 05:47
class-wp-theme-json-schema.php	4.22 KB	-rw-r--r--	2022-09-13 04:17
class-wp-theme-json.php	116.44 KB	-rw-r--r--	2023-05-30 12:14
class-wp-theme.php	54.98 KB	-rw-r--r--	2023-10-17 05:25
class-wp-user-meta-session-tokens.php	2.92 KB	-rw-r--r--	2019-01-09 18:34
class-wp-user-query.php	38.89 KB	-rw-r--r--	2022-11-09 07:01
class-wp-user-request.php	2.17 KB	-rw-r--r--	2022-09-13 04:17
class-wp-user.php	22.23 KB	-rw-r--r--	2022-11-30 05:21
class-wp-walker.php	12.86 KB	-rw-r--r--	2022-09-13 04:17
class-wp-widget-factory.php	3.27 KB	-rw-r--r--	2022-09-13 04:17
class-wp-widget.php	17.95 KB	-rw-r--r--	2023-02-22 06:09
class-wp-xmlrpc-server.php	208.55 KB	-rw-r--r--	2023-02-20 04:35
class-wp.php	25.39 KB	-rw-r--r--	2022-10-19 04:41
class-wpdb.php	116.29 KB	-rw-r--r--	2023-03-01 02:18
class.wp-dependencies.php	373 B	-rw-r--r--	2022-09-21 02:47
class.wp-scripts.php	343 B	-rw-r--r--	2022-09-21 02:47
class.wp-styles.php	338 B	-rw-r--r--	2022-09-21 02:47
comment-template.php	97.57 KB	-rw-r--r--	2023-05-30 12:14
comment.php	125.63 KB	-rw-r--r--	2025-10-17 03:27
compat.php	15 KB	-rw-r--r--	2025-10-17 03:27
cron.php	40.56 KB	-rw-r--r--	2026-02-14 18:33
date.php	400 B	-rw-r--r--	2022-06-17 23:50
default-constants.php	10.29 KB	-rw-r--r--	2022-09-20 14:06
default-filters.php	30.85 KB	-rw-r--r--	2023-02-03 13:45
default-widgets.php	2.17 KB	-rw-r--r--	2021-05-25 20:57
deprecated.php	133.95 KB	-rw-r--r--	2023-03-01 04:37
embed-template.php	338 B	-rw-r--r--	2022-06-17 23:50
embed.php	36.58 KB	-rw-r--r--	2022-08-20 10:36
error-protection.php	4.02 KB	-rw-r--r--	2022-04-30 07:47
feed-atom-comments.php	5.32 KB	-rw-r--r--	2022-11-27 10:31
feed-atom.php	2.98 KB	-rw-r--r--	2021-11-29 23:22
feed-rdf.php	2.61 KB	-rw-r--r--	2020-01-29 14:15
feed-rss.php	1.16 KB	-rw-r--r--	2020-01-29 14:15
feed-rss2-comments.php	3.98 KB	-rw-r--r--	2023-02-13 07:38
feed-rss2.php	3.71 KB	-rw-r--r--	2020-01-29 14:15
feed.php	22.46 KB	-rw-r--r--	2025-10-17 03:27
fonts.php	0 B	-rw-r--r--	2025-10-17 03:27
formatting.php	325.36 KB	-rw-r--r--	2025-10-17 03:27
functions.php	255.56 KB	-r--r--r--	2026-02-14 18:33
functions.wp-scripts.php	13.2 KB	-rw-r--r--	2023-01-16 04:27
functions.wp-styles.php	8.38 KB	-rw-r--r--	2023-01-16 04:27
general-template.php	163.92 KB	-rw-r--r--	2026-02-14 18:33
global-styles-and-settings.php	13.86 KB	-rw-r--r--	2023-02-03 08:22
http.php	22.62 KB	-rw-r--r--	2025-10-17 03:27
https-detection.php	6.7 KB	-rw-r--r--	2022-08-12 02:41
https-migration.php	4.62 KB	-rw-r--r--	2021-02-02 13:40
kses.php	69.6 KB	-rw-r--r--	2023-02-13 22:17
l10n.php	60.47 KB	-rw-r--r--	2025-10-17 03:27
link-template.php	150.32 KB	-rw-r--r--	2023-03-09 03:06
load.php	50.37 KB	-rw-r--r--	2025-10-17 03:27
locale.php	162 B	-rw-r--r--	2019-10-09 05:49
media-template.php	59.9 KB	-rw-r--r--	2023-03-07 18:17
media.php	188.81 KB	-rw-r--r--	2025-10-17 03:27
meta.php	61.72 KB	-rw-r--r--	2023-02-22 06:09
ms-blogs.php	24.93 KB	-rw-r--r--	2023-02-24 14:53
ms-default-constants.php	4.78 KB	-rw-r--r--	2022-07-15 02:05
ms-default-filters.php	6.48 KB	-rw-r--r--	2023-02-24 14:53
ms-deprecated.php	21.25 KB	-rw-r--r--	2022-12-10 01:24
ms-files.php	2.59 KB	-rw-r--r--	2021-07-07 08:51
ms-functions.php	89.14 KB	-rw-r--r--	2023-02-22 06:09
ms-load.php	19.38 KB	-rw-r--r--	2023-02-24 00:08
ms-network.php	3.71 KB	-rw-r--r--	2022-10-19 06:46
ms-settings.php	4.03 KB	-rw-r--r--	2020-05-17 07:12
ms-site.php	39.13 KB	-rw-r--r--	2022-12-08 10:49
nav-menu-template.php	25.18 KB	-rw-r--r--	2023-02-16 13:34
nav-menu.php	42.21 KB	-rw-r--r--	2025-10-17 03:27
option.php	77.86 KB	-rw-r--r--	2023-02-08 02:19
pluggable-deprecated.php	6.12 KB	-rw-r--r--	2020-01-12 08:02
pluggable.php	108.27 KB	-rw-r--r--	2025-10-17 03:27
plugin.php	35.15 KB	-r--r--r--	2026-02-14 18:33
post-formats.php	6.93 KB	-rw-r--r--	2023-02-22 06:09
post-template.php	65.28 KB	-rw-r--r--	2023-02-08 04:05
post-thumbnail-template.php	10.75 KB	-rw-r--r--	2023-01-19 21:04
post.php	268.82 KB	-rw-r--r--	2025-10-17 03:27
query.php	36.13 KB	-rw-r--r--	2025-10-17 03:27
registration-functions.php	200 B	-rw-r--r--	2020-11-13 00:47
registration.php	200 B	-rw-r--r--	2020-11-13 00:47
rest-api.php	94.47 KB	-rw-r--r--	2025-10-17 03:27
revision.php	24.82 KB	-rw-r--r--	2025-10-17 03:27
rewrite.php	19.04 KB	-rw-r--r--	2022-12-16 00:33
robots-template.php	5.06 KB	-rw-r--r--	2022-04-07 04:03
rss-functions.php	255 B	-rw-r--r--	2020-11-17 12:22
rss.php	22.46 KB	-rw-r--r--	2023-02-22 06:09
script-loader.php	133.74 KB	-rw-r--r--	2023-05-30 12:14
session.php	258 B	-rw-r--r--	2020-02-06 20:03
shortcodes.php	21.86 KB	-rw-r--r--	2023-10-17 05:25
sitemaps.php	3.16 KB	-rw-r--r--	2025-10-17 03:27
spl-autoload-compat.php	441 B	-rw-r--r--	2020-11-13 00:47
style-engine.php	6.25 KB	-rw-r--r--	2025-10-17 03:27
taxonomy.php	168.15 KB	-rw-r--r--	2025-10-17 03:27
template-canvas.php	592 B	-rw-r--r--	2021-12-11 10:00
template-loader.php	2.94 KB	-rw-r--r--	2026-02-14 18:33
template.php	22.77 KB	-rw-r--r--	2022-12-23 00:38
theme-i18n.json	1.12 KB	-rw-r--r--	2022-09-22 00:13
theme-templates.php	5.38 KB	-rw-r--r--	2023-02-20 04:35
theme.json	9.81 KB	-rw-r--r--	2023-02-23 05:30
theme.php	126.88 KB	-rw-r--r--	2025-10-17 03:27
update.php	33.86 KB	-rw-r--r--	2025-10-17 03:27
user.php	165.74 KB	-rw-r--r--	2025-10-17 03:27
vars.php	5.74 KB	-rw-r--r--	2025-10-17 03:27
version.php	929 B	-rw-r--r--	2025-10-17 03:27
widgets.php	68.22 KB	-rw-r--r--	2025-10-17 03:27
wlwmanifest.xml	1.02 KB	-rw-r--r--	2013-12-12 09:19
wp-db.php	445 B	-rw-r--r--	2022-07-22 11:15
wp-diff.php	647 B	-rw-r--r--	2020-02-06 20:03

Rename

<?php
/**
 * WordPress implementation for PHP functions either missing from older PHP versions or not included by default.
 *
 * @package PHP
 * @access private
 */

// If gettext isn't available.
if ( ! function_exists( '_' ) ) {
	function _( $message ) {
		return $message;
	}
}

/**
 * Returns whether PCRE/u (PCRE_UTF8 modifier) is available for use.
 *
 * @ignore
 * @since 4.2.2
 * @access private
 *
 * @param bool $set - Used for testing only
 *             null   : default - get PCRE/u capability
 *             false  : Used for testing - return false for future calls to this function
 *             'reset': Used for testing - restore default behavior of this function
 */
function _wp_can_use_pcre_u( $set = null ) {
	static $utf8_pcre = 'reset';

if ( null !== $set ) {
		$utf8_pcre = $set;
	}

if ( 'reset' === $utf8_pcre ) {
		// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged -- intentional error generated to detect PCRE/u support.
		$utf8_pcre = @preg_match( '/^./u', 'a' );
	}

return $utf8_pcre;
}

if ( ! function_exists( 'mb_substr' ) ) :
	/**
	 * Compat function to mimic mb_substr().
	 *
	 * @ignore
	 * @since 3.2.0
	 *
	 * @see _mb_substr()
	 *
	 * @param string      $string   The string to extract the substring from.
	 * @param int         $start    Position to being extraction from in `$string`.
	 * @param int|null    $length   Optional. Maximum number of characters to extract from `$string`.
	 *                              Default null.
	 * @param string|null $encoding Optional. Character encoding to use. Default null.
	 * @return string Extracted substring.
	 */
	function mb_substr( $string, $start, $length = null, $encoding = null ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.stringFound
		return _mb_substr( $string, $start, $length, $encoding );
	}
endif;

/**
 * Internal compat function to mimic mb_substr().
 *
 * Only understands UTF-8 and 8bit. All other character sets will be treated as 8bit.
 * For `$encoding === UTF-8`, the `$str` input is expected to be a valid UTF-8 byte
 * sequence. The behavior of this function for invalid inputs is undefined.
 *
 * @ignore
 * @since 3.2.0
 *
 * @param string      $str      The string to extract the substring from.
 * @param int         $start    Position to being extraction from in `$str`.
 * @param int|null    $length   Optional. Maximum number of characters to extract from `$str`.
 *                              Default null.
 * @param string|null $encoding Optional. Character encoding to use. Default null.
 * @return string Extracted substring.
 */
function _mb_substr( $str, $start, $length = null, $encoding = null ) {
	if ( null === $str ) {
		return '';
	}

if ( null === $encoding ) {
		$encoding = get_option( 'blog_charset' );
	}

/*
	 * The solution below works only for UTF-8, so in case of a different
	 * charset just use built-in substr().
	 */
	if ( ! in_array( $encoding, array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ), true ) ) {
		return is_null( $length ) ? substr( $str, $start ) : substr( $str, $start, $length );
	}

if ( _wp_can_use_pcre_u() ) {
		// Use the regex unicode support to separate the UTF-8 characters into an array.
		preg_match_all( '/./us', $str, $match );
		$chars = is_null( $length ) ? array_slice( $match[0], $start ) : array_slice( $match[0], $start, $length );
		return implode( '', $chars );
	}

$regex = '/(
		[\x00-\x7F]                  # single-byte sequences   0xxxxxxx
		| [\xC2-\xDF][\x80-\xBF]       # double-byte sequences   110xxxxx 10xxxxxx
		| \xE0[\xA0-\xBF][\x80-\xBF]   # triple-byte sequences   1110xxxx 10xxxxxx * 2
		| [\xE1-\xEC][\x80-\xBF]{2}
		| \xED[\x80-\x9F][\x80-\xBF]
		| [\xEE-\xEF][\x80-\xBF]{2}
		| \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences   11110xxx 10xxxxxx * 3
		| [\xF1-\xF3][\x80-\xBF]{3}
		| \xF4[\x80-\x8F][\x80-\xBF]{2}
	)/x';

// Start with 1 element instead of 0 since the first thing we do is pop.
	$chars = array( '' );

do {
		// We had some string left over from the last round, but we counted it in that last round.
		array_pop( $chars );

/*
		 * Split by UTF-8 character, limit to 1000 characters (last array element will contain
		 * the rest of the string).
		 */
		$pieces = preg_split( $regex, $str, 1000, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY );

$chars = array_merge( $chars, $pieces );

// If there's anything left over, repeat the loop.
	} while ( count( $pieces ) > 1 && $str = array_pop( $pieces ) );

return implode( '', array_slice( $chars, $start, $length ) );
}

if ( ! function_exists( 'mb_strlen' ) ) :
	/**
	 * Compat function to mimic mb_strlen().
	 *
	 * @ignore
	 * @since 4.2.0
	 *
	 * @see _mb_strlen()
	 *
	 * @param string      $string   The string to retrieve the character length from.
	 * @param string|null $encoding Optional. Character encoding to use. Default null.
	 * @return int String length of `$string`.
	 */
	function mb_strlen( $string, $encoding = null ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.stringFound
		return _mb_strlen( $string, $encoding );
	}
endif;

/**
 * Internal compat function to mimic mb_strlen().
 *
 * Only understands UTF-8 and 8bit. All other character sets will be treated as 8bit.
 * For `$encoding === UTF-8`, the `$str` input is expected to be a valid UTF-8 byte
 * sequence. The behavior of this function for invalid inputs is undefined.
 *
 * @ignore
 * @since 4.2.0
 *
 * @param string      $str      The string to retrieve the character length from.
 * @param string|null $encoding Optional. Character encoding to use. Default null.
 * @return int String length of `$str`.
 */
function _mb_strlen( $str, $encoding = null ) {
	if ( null === $encoding ) {
		$encoding = get_option( 'blog_charset' );
	}

/*
	 * The solution below works only for UTF-8, so in case of a different charset
	 * just use built-in strlen().
	 */
	if ( ! in_array( $encoding, array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ), true ) ) {
		return strlen( $str );
	}

if ( _wp_can_use_pcre_u() ) {
		// Use the regex unicode support to separate the UTF-8 characters into an array.
		preg_match_all( '/./us', $str, $match );
		return count( $match[0] );
	}

$regex = '/(?:
		[\x00-\x7F]                  # single-byte sequences   0xxxxxxx
		| [\xC2-\xDF][\x80-\xBF]       # double-byte sequences   110xxxxx 10xxxxxx
		| \xE0[\xA0-\xBF][\x80-\xBF]   # triple-byte sequences   1110xxxx 10xxxxxx * 2
		| [\xE1-\xEC][\x80-\xBF]{2}
		| \xED[\x80-\x9F][\x80-\xBF]
		| [\xEE-\xEF][\x80-\xBF]{2}
		| \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences   11110xxx 10xxxxxx * 3
		| [\xF1-\xF3][\x80-\xBF]{3}
		| \xF4[\x80-\x8F][\x80-\xBF]{2}
	)/x';

// Start at 1 instead of 0 since the first thing we do is decrement.
	$count = 1;

do {
		// We had some string left over from the last round, but we counted it in that last round.
		$count--;

/*
		 * Split by UTF-8 character, limit to 1000 characters (last array element will contain
		 * the rest of the string).
		 */
		$pieces = preg_split( $regex, $str, 1000 );

// Increment.
		$count += count( $pieces );

// If there's anything left over, repeat the loop.
	} while ( $str = array_pop( $pieces ) );

// Fencepost: preg_split() always returns one extra item in the array.
	return --$count;
}

if ( ! function_exists( 'hash_hmac' ) ) :
	/**
	 * Compat function to mimic hash_hmac().
	 *
	 * The Hash extension is bundled with PHP by default since PHP 5.1.2.
	 * However, the extension may be explicitly disabled on select servers.
	 * As of PHP 7.4.0, the Hash extension is a core PHP extension and can no
	 * longer be disabled.
	 * I.e. when PHP 7.4.0 becomes the minimum requirement, this polyfill
	 * and the associated `_hash_hmac()` function can be safely removed.
	 *
	 * @ignore
	 * @since 3.2.0
	 *
	 * @see _hash_hmac()
	 *
	 * @param string $algo   Hash algorithm. Accepts 'md5' or 'sha1'.
	 * @param string $data   Data to be hashed.
	 * @param string $key    Secret key to use for generating the hash.
	 * @param bool   $binary Optional. Whether to output raw binary data (true),
	 *                       or lowercase hexits (false). Default false.
	 * @return string|false The hash in output determined by `$binary`.
	 *                      False if `$algo` is unknown or invalid.
	 */
	function hash_hmac( $algo, $data, $key, $binary = false ) {
		return _hash_hmac( $algo, $data, $key, $binary );
	}
endif;

/**
 * Internal compat function to mimic hash_hmac().
 *
 * @ignore
 * @since 3.2.0
 *
 * @param string $algo   Hash algorithm. Accepts 'md5' or 'sha1'.
 * @param string $data   Data to be hashed.
 * @param string $key    Secret key to use for generating the hash.
 * @param bool   $binary Optional. Whether to output raw binary data (true),
 *                       or lowercase hexits (false). Default false.
 * @return string|false The hash in output determined by `$binary`.
 *                      False if `$algo` is unknown or invalid.
 */
function _hash_hmac( $algo, $data, $key, $binary = false ) {
	$packs = array(
		'md5'  => 'H32',
		'sha1' => 'H40',
	);

if ( ! isset( $packs[ $algo ] ) ) {
		return false;
	}

$pack = $packs[ $algo ];

if ( strlen( $key ) > 64 ) {
		$key = pack( $pack, $algo( $key ) );
	}

$key = str_pad( $key, 64, chr( 0 ) );

$ipad = ( substr( $key, 0, 64 ) ^ str_repeat( chr( 0x36 ), 64 ) );
	$opad = ( substr( $key, 0, 64 ) ^ str_repeat( chr( 0x5C ), 64 ) );

$hmac = $algo( $opad . pack( $pack, $algo( $ipad . $data ) ) );

if ( $binary ) {
		return pack( $pack, $hmac );
	}

return $hmac;
}

if ( ! function_exists( 'hash_equals' ) ) :
	/**
	 * Timing attack safe string comparison.
	 *
	 * Compares two strings using the same time whether they're equal or not.
	 *
	 * Note: It can leak the length of a string when arguments of differing length are supplied.
	 *
	 * This function was added in PHP 5.6.
	 * However, the Hash extension may be explicitly disabled on select servers.
	 * As of PHP 7.4.0, the Hash extension is a core PHP extension and can no
	 * longer be disabled.
	 * I.e. when PHP 7.4.0 becomes the minimum requirement, this polyfill
	 * can be safely removed.
	 *
	 * @since 3.9.2
	 *
	 * @param string $known_string Expected string.
	 * @param string $user_string  Actual, user supplied, string.
	 * @return bool Whether strings are equal.
	 */
	function hash_equals( $known_string, $user_string ) {
		$known_string_length = strlen( $known_string );

if ( strlen( $user_string ) !== $known_string_length ) {
			return false;
		}

$result = 0;

// Do not attempt to "optimize" this.
		for ( $i = 0; $i < $known_string_length; $i++ ) {
			$result |= ord( $known_string[ $i ] ) ^ ord( $user_string[ $i ] );
		}

return 0 === $result;
	}
endif;

// random_int() was introduced in PHP 7.0.
if ( ! function_exists( 'random_int' ) ) {
	require ABSPATH . WPINC . '/random_compat/random.php';
}
// sodium_crypto_box() was introduced in PHP 7.2.
if ( ! function_exists( 'sodium_crypto_box' ) ) {
	require ABSPATH . WPINC . '/sodium_compat/autoload.php';
}

if ( ! function_exists( 'is_countable' ) ) {
	/**
	 * Polyfill for is_countable() function added in PHP 7.3.
	 *
	 * Verify that the content of a variable is an array or an object
	 * implementing the Countable interface.
	 *
	 * @since 4.9.6
	 *
	 * @param mixed $value The value to check.
	 * @return bool True if `$value` is countable, false otherwise.
	 */
	function is_countable( $value ) {
		return ( is_array( $value )
			|| $value instanceof Countable
			|| $value instanceof SimpleXMLElement
			|| $value instanceof ResourceBundle
		);
	}
}

if ( ! function_exists( 'is_iterable' ) ) {
	/**
	 * Polyfill for is_iterable() function added in PHP 7.1.
	 *
	 * Verify that the content of a variable is an array or an object
	 * implementing the Traversable interface.
	 *
	 * @since 4.9.6
	 *
	 * @param mixed $value The value to check.
	 * @return bool True if `$value` is iterable, false otherwise.
	 */
	function is_iterable( $value ) {
		return ( is_array( $value ) || $value instanceof Traversable );
	}
}

if ( ! function_exists( 'array_key_first' ) ) {
	/**
	 * Polyfill for array_key_first() function added in PHP 7.3.
	 *
	 * Get the first key of the given array without affecting
	 * the internal array pointer.
	 *
	 * @since 5.9.0
	 *
	 * @param array $array An array.
	 * @return string|int|null The first key of array if the array
	 *                         is not empty; `null` otherwise.
	 */
	function array_key_first( array $array ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		foreach ( $array as $key => $value ) {
			return $key;
		}
	}
}

if ( ! function_exists( 'array_key_last' ) ) {
	/**
	 * Polyfill for `array_key_last()` function added in PHP 7.3.
	 *
	 * Get the last key of the given array without affecting the
	 * internal array pointer.
	 *
	 * @since 5.9.0
	 *
	 * @param array $array An array.
	 * @return string|int|null The last key of array if the array
	 *.                        is not empty; `null` otherwise.
	 */
	function array_key_last( array $array ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		if ( empty( $array ) ) {
			return null;
		}

end( $array );

return key( $array );
	}
}

if ( ! function_exists( 'str_contains' ) ) {
	/**
	 * Polyfill for `str_contains()` function added in PHP 8.0.
	 *
	 * Performs a case-sensitive check indicating if needle is
	 * contained in haystack.
	 *
	 * @since 5.9.0
	 *
	 * @param string $haystack The string to search in.
	 * @param string $needle   The substring to search for in the haystack.
	 * @return bool True if `$needle` is in `$haystack`, otherwise false.
	 */
	function str_contains( $haystack, $needle ) {
		return ( '' === $needle || false !== strpos( $haystack, $needle ) );
	}
}

if ( ! function_exists( 'str_starts_with' ) ) {
	/**
	 * Polyfill for `str_starts_with()` function added in PHP 8.0.
	 *
	 * Performs a case-sensitive check indicating if
	 * the haystack begins with needle.
	 *
	 * @since 5.9.0
	 *
	 * @param string $haystack The string to search in.
	 * @param string $needle   The substring to search for in the `$haystack`.
	 * @return bool True if `$haystack` starts with `$needle`, otherwise false.
	 */
	function str_starts_with( $haystack, $needle ) {
		if ( '' === $needle ) {
			return true;
		}

return 0 === strpos( $haystack, $needle );
	}
}

if ( ! function_exists( 'str_ends_with' ) ) {
	/**
	 * Polyfill for `str_ends_with()` function added in PHP 8.0.
	 *
	 * Performs a case-sensitive check indicating if
	 * the haystack ends with needle.
	 *
	 * @since 5.9.0
	 *
	 * @param string $haystack The string to search in.
	 * @param string $needle   The substring to search for in the `$haystack`.
	 * @return bool True if `$haystack` ends with `$needle`, otherwise false.
	 */
	function str_ends_with( $haystack, $needle ) {
		if ( '' === $haystack && '' !== $needle ) {
			return false;
		}

$len = strlen( $needle );

return 0 === substr_compare( $haystack, $needle, -$len, $len );
	}
}

// IMAGETYPE_WEBP constant is only defined in PHP 7.1 or later.
if ( ! defined( 'IMAGETYPE_WEBP' ) ) {
	define( 'IMAGETYPE_WEBP', 18 );
}

// IMG_WEBP constant is only defined in PHP 7.0.10 or later.
if ( ! defined( 'IMG_WEBP' ) ) {
	define( 'IMG_WEBP', IMAGETYPE_WEBP );
}