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NAME	SIZE	PERMISSION
ID3	[ DIR ]	drwxr-xr-x
IXR	[ DIR ]	drwxr-xr-x
PHPMailer	[ DIR ]	drwxr-xr-x
Requests	[ DIR ]	drwxr-xr-x
SimplePie	[ DIR ]	drwxr-xr-x
Text	[ DIR ]	drwxr-xr-x
abilities-api	[ DIR ]	drwxr-xr-x
ai-client	[ DIR ]	drwxr-xr-x
assets	[ DIR ]	drwxr-xr-x
block-bindings	[ DIR ]	drwxr-xr-x
block-patterns	[ DIR ]	drwxr-xr-x
block-supports	[ DIR ]	drwxr-xr-x
blocks	[ DIR ]	drwxr-xr-x
build	[ DIR ]	drwxr-xr-x
certificates	[ DIR ]	drwxr-xr-x
css	[ DIR ]	drwxr-xr-x
customize	[ DIR ]	drwxr-xr-x
fonts	[ DIR ]	drwxr-xr-x
html-api	[ DIR ]	drwxr-xr-x
images	[ DIR ]	drwxr-xr-x
interactivity-api	[ DIR ]	drwxr-xr-x
js	[ DIR ]	drwxr-xr-x
l10n	[ DIR ]	drwxr-xr-x
php-ai-client	[ DIR ]	drwxr-xr-x
php-compat	[ DIR ]	drwxr-xr-x
pomo	[ DIR ]	drwxr-xr-x
rest-api	[ DIR ]	drwxr-xr-x
sitemaps	[ DIR ]	drwxr-xr-x
sodium_compat	[ DIR ]	drwxr-xr-x
style-engine	[ DIR ]	drwxr-xr-x
theme-compat	[ DIR ]	drwxr-xr-x
widgets	[ DIR ]	drwxr-xr-x
abilities-api.php	32.03 KB	-rw-r--r--
abilities.php	11.52 KB	-rw-r--r--
admin-bar.php	39.13 KB	-rw-r--r--
ai-client.php	2.49 KB	-rw-r--r--
atomlib.php	11.9 KB	-rw-r--r--
author-template.php	19.38 KB	-rw-r--r--
block-bindings.php	7.45 KB	-rw-r--r--
block-editor.php	28.05 KB	-rw-r--r--
block-i18n.json	316 B	-rw-r--r--
block-patterns.php	15.24 KB	-rw-r--r--
block-template-utils.php	61.69 KB	-rw-r--r--
block-template.php	17.83 KB	-rw-r--r--
blocks.php	121.29 KB	-rw-r--r--
bookmark-template.php	12.47 KB	-rw-r--r--
bookmark.php	15.07 KB	-rw-r--r--
cache-compat.php	10.76 KB	-rw-r--r--
cache.php	13.17 KB	-rw-r--r--
canonical.php	33.97 KB	-rw-r--r--
capabilities.php	42.56 KB	-rw-r--r--
category-template.php	55.65 KB	-rw-r--r--
category.php	12.53 KB	-rw-r--r--
class-IXR.php	2.55 KB	-rw-r--r--
class-avif-info.php	29.3 KB	-rw-r--r--
class-feed.php	539 B	-rw-r--r--
class-http.php	367 B	-rw-r--r--
class-json.php	42.65 KB	-rw-r--r--
class-oembed.php	401 B	-rw-r--r--
class-phpass.php	6.61 KB	-rw-r--r--
class-phpmailer.php	664 B	-rw-r--r--
class-pop3.php	20.61 KB	-rw-r--r--
class-requests.php	2.18 KB	-rw-r--r--
class-simplepie.php	453 B	-rw-r--r--
class-smtp.php	457 B	-rw-r--r--
class-snoopy.php	36.83 KB	-rw-r--r--
class-walker-category-dropdown.php	2.41 KB	-rw-r--r--
class-walker-category.php	8.28 KB	-rw-r--r--
class-walker-comment.php	13.89 KB	-rw-r--r--
class-walker-nav-menu.php	11.76 KB	-rw-r--r--
class-walker-page-dropdown.php	2.65 KB	-rw-r--r--
class-walker-page.php	7.43 KB	-rw-r--r--
class-wp-admin-bar.php	17.58 KB	-rw-r--r--
class-wp-ajax-response.php	5.16 KB	-rw-r--r--
class-wp-application-passwords.php	16.7 KB	-rw-r--r--
class-wp-block-bindings-registry.php	8.07 KB	-rw-r--r--
class-wp-block-bindings-source.php	2.92 KB	-rw-r--r--
class-wp-block-editor-context.php	1.32 KB	-rw-r--r--
class-wp-block-list.php	4.6 KB	-rw-r--r--
class-wp-block-metadata-registry.php	11.57 KB	-rw-r--r--
class-wp-block-parser-block.php	2.5 KB	-rw-r--r--
class-wp-block-parser-frame.php	1.95 KB	-rw-r--r--
class-wp-block-parser.php	11.25 KB	-rw-r--r--
class-wp-block-pattern-categories-registry.php	4.28 KB	-rw-r--r--
class-wp-block-patterns-registry.php	10.02 KB	-rw-r--r--
class-wp-block-processor.php	68.28 KB	-rw-r--r--
class-wp-block-styles-registry.php	6.27 KB	-rw-r--r--
class-wp-block-supports.php	7.4 KB	-rw-r--r--
class-wp-block-template.php	2.06 KB	-rw-r--r--
class-wp-block-templates-registry.php	6.91 KB	-rw-r--r--
class-wp-block-type-registry.php	5.18 KB	-rw-r--r--
class-wp-block-type.php	16.82 KB	-rw-r--r--
class-wp-block.php	27.57 KB	-rw-r--r--
class-wp-classic-to-block-menu-converter.php	3.93 KB	-rw-r--r--
class-wp-comment-query.php	47.89 KB	-rw-r--r--
class-wp-comment.php	16.84 KB	-rw-r--r--
class-wp-connector-registry.php	14.83 KB	-rw-r--r--
class-wp-customize-control.php	25.5 KB	-rw-r--r--
class-wp-customize-manager.php	198.15 KB	-rw-r--r--
class-wp-customize-nav-menus.php	56.67 KB	-rw-r--r--
class-wp-customize-panel.php	10.45 KB	-rw-r--r--
class-wp-customize-section.php	10.95 KB	-rw-r--r--
class-wp-customize-setting.php	29.25 KB	-rw-r--r--
class-wp-customize-widgets.php	70.89 KB	-rw-r--r--
class-wp-date-query.php	35.13 KB	-rw-r--r--
class-wp-dependencies.php	16.69 KB	-rw-r--r--
class-wp-dependency.php	2.59 KB	-rw-r--r--
class-wp-duotone.php	39.88 KB	-rw-r--r--
class-wp-editor.php	70.54 KB	-rw-r--r--
class-wp-embed.php	15.54 KB	-rw-r--r--
class-wp-error.php	7.34 KB	-rw-r--r--
class-wp-exception.php	253 B	-rw-r--r--
class-wp-fatal-error-handler.php	7.96 KB	-rw-r--r--
class-wp-feed-cache-transient.php	3.23 KB	-rw-r--r--
class-wp-feed-cache.php	969 B	-rw-r--r--
class-wp-filter-sentinel.php	760 B	-rw-r--r--
class-wp-hook.php	17.06 KB	-rw-r--r--
class-wp-http-cookie.php	7.1 KB	-rw-r--r--
class-wp-http-curl.php	12.95 KB	-rw-r--r--
class-wp-http-encoding.php	6.53 KB	-rw-r--r--
class-wp-http-ixr-client.php	3.43 KB	-rw-r--r--
class-wp-http-proxy.php	5.84 KB	-rw-r--r--
class-wp-http-requests-hooks.php	1.97 KB	-rw-r--r--
class-wp-http-requests-response.php	4.14 KB	-rw-r--r--
class-wp-http-response.php	2.91 KB	-rw-r--r--
class-wp-http-streams.php	16.37 KB	-rw-r--r--
class-wp-http.php	40.67 KB	-rw-r--r--
class-wp-icon-collections-registry.php	5.67 KB	-rw-r--r--
class-wp-icons-registry.php	9.67 KB	-rw-r--r--
class-wp-image-editor-gd.php	20.25 KB	-rw-r--r--
class-wp-image-editor-imagick.php	42.44 KB	-rw-r--r--
class-wp-image-editor.php	17.05 KB	-rw-r--r--
class-wp-list-util.php	7.27 KB	-rw-r--r--
class-wp-locale-switcher.php	6.62 KB	-rw-r--r--
class-wp-locale.php	16.45 KB	-rw-r--r--
class-wp-matchesmapregex.php	1.79 KB	-rw-r--r--
class-wp-meta-query.php	29.79 KB	-rw-r--r--
class-wp-metadata-lazyloader.php	6.67 KB	-rw-r--r--
class-wp-navigation-fallback.php	8.98 KB	-rw-r--r--
class-wp-network-query.php	19.52 KB	-rw-r--r--
class-wp-network.php	12.12 KB	-rw-r--r--
class-wp-object-cache.php	17.11 KB	-rw-r--r--
class-wp-oembed-controller.php	6.74 KB	-rw-r--r--
class-wp-oembed.php	33.57 KB	-rw-r--r--
class-wp-paused-extensions-storage.php	4.95 KB	-rw-r--r--
class-wp-phpmailer.php	4.25 KB	-rw-r--r--
class-wp-plugin-dependencies.php	24.62 KB	-rw-r--r--
class-wp-post-type.php	29.95 KB	-rw-r--r--
class-wp-post.php	8.6 KB	-rw-r--r--
class-wp-query.php	160.3 KB	-rw-r--r--
class-wp-recovery-mode-cookie-service.php	6.72 KB	-rw-r--r--
class-wp-recovery-mode-email-service.php	10.9 KB	-rw-r--r--
class-wp-recovery-mode-key-service.php	4.8 KB	-rw-r--r--
class-wp-recovery-mode-link-service.php	3.44 KB	-rw-r--r--
class-wp-recovery-mode.php	11.19 KB	-rw-r--r--
class-wp-rewrite.php	62.2 KB	-rw-r--r--
class-wp-role.php	2.46 KB	-rw-r--r--
class-wp-roles.php	9.11 KB	-rw-r--r--
class-wp-script-modules.php	39.79 KB	-rw-r--r--
class-wp-scripts.php	35.89 KB	-rw-r--r--
class-wp-session-tokens.php	7.15 KB	-rw-r--r--
class-wp-simplepie-file.php	3.47 KB	-rw-r--r--
class-wp-simplepie-sanitize-kses.php	1.86 KB	-rw-r--r--
class-wp-site-query.php	30.74 KB	-rw-r--r--
class-wp-site.php	7.65 KB	-rw-r--r--
class-wp-speculation-rules.php	7.7 KB	-rw-r--r--
class-wp-styles.php	13 KB	-rw-r--r--
class-wp-tax-query.php	19.12 KB	-rw-r--r--
class-wp-taxonomy.php	18.12 KB	-rw-r--r--
class-wp-term-query.php	39.8 KB	-rw-r--r--
class-wp-term.php	5.14 KB	-rw-r--r--
class-wp-text-diff-renderer-inline.php	979 B	-rw-r--r--
class-wp-text-diff-renderer-table.php	18.48 KB	-rw-r--r--
class-wp-textdomain-registry.php	10.24 KB	-rw-r--r--
class-wp-theme-json-data.php	1.76 KB	-rw-r--r--
class-wp-theme-json-resolver.php	34.86 KB	-rw-r--r--
class-wp-theme-json-schema.php	7.19 KB	-rw-r--r--
class-wp-theme-json.php	216.31 KB	-rw-r--r--
class-wp-theme.php	64.27 KB	-rw-r--r--
class-wp-token-map.php	28.35 KB	-rw-r--r--
class-wp-url-pattern-prefixer.php	4.69 KB	-rw-r--r--
class-wp-user-meta-session-tokens.php	2.88 KB	-rw-r--r--
class-wp-user-query.php	43.07 KB	-rw-r--r--
class-wp-user-request.php	2.29 KB	-rw-r--r--
class-wp-user.php	22.65 KB	-rw-r--r--
class-wp-view-config-data.php	28.74 KB	-rw-r--r--
class-wp-walker.php	12.98 KB	-rw-r--r--
class-wp-widget-factory.php	3.26 KB	-rw-r--r--
class-wp-widget.php	18.02 KB	-rw-r--r--
class-wp-xmlrpc-server.php	211.2 KB	-rw-r--r--
class-wp.php	25.75 KB	-rw-r--r--
class-wpdb.php	118.59 KB	-rw-r--r--
class.wp-dependencies.php	373 B	-rw-r--r--
class.wp-scripts.php	343 B	-rw-r--r--
class.wp-styles.php	338 B	-rw-r--r--
comment-template.php	100.79 KB	-rw-r--r--
comment.php	147.1 KB	-rw-r--r--
compat-utf8.php	18.93 KB	-rw-r--r--
compat.php	21.95 KB	-rw-r--r--
connectors.php	32.15 KB	-rw-r--r--
cron.php	45.18 KB	-rw-r--r--
date.php	400 B	-rw-r--r--
default-constants.php	11.1 KB	-rw-r--r--
default-filters.php	38.57 KB	-rw-r--r--
default-widgets.php	2.23 KB	-rw-r--r--
deprecated.php	189.43 KB	-rw-r--r--
embed-template.php	338 B	-rw-r--r--
embed.php	38.3 KB	-rw-r--r--
error-protection.php	4 KB	-rw-r--r--
feed-atom-comments.php	5.38 KB	-rw-r--r--
feed-atom.php	3.04 KB	-rw-r--r--
feed-rdf.php	2.61 KB	-rw-r--r--
feed-rss.php	1.16 KB	-rw-r--r--
feed-rss2-comments.php	4.04 KB	-rw-r--r--
feed-rss2.php	3.71 KB	-rw-r--r--
feed.php	24.6 KB	-rw-r--r--
fonts.php	9.56 KB	-rw-r--r--
formatting.php	349.27 KB	-rw-r--r--
functions.php	288.56 KB	-rw-r--r--
functions.wp-scripts.php	20.01 KB	-rw-r--r--
functions.wp-styles.php	8.45 KB	-rw-r--r--
general-template.php	179.17 KB	-rw-r--r--
global-styles-and-settings.php	20.29 KB	-rw-r--r--
http.php	28.28 KB	-rw-r--r--
https-detection.php	5.72 KB	-rw-r--r--
https-migration.php	4.63 KB	-rw-r--r--
icons.php	6.19 KB	-rw-r--r--
json-schema.php	7.62 KB	-rw-r--r--
kses.php	86.42 KB	-rw-r--r--
l10n.php	69.74 KB	-rw-r--r--
link-template.php	156.39 KB	-rw-r--r--
load.php	55.15 KB	-rw-r--r--
locale.php	162 B	-rw-r--r--
media-template.php	64.22 KB	-rw-r--r--
media.php	231.25 KB	-rw-r--r--
meta.php	65.17 KB	-rw-r--r--
ms-blogs.php	25.71 KB	-rw-r--r--
ms-default-constants.php	4.81 KB	-rw-r--r--
ms-default-filters.php	6.48 KB	-rw-r--r--
ms-deprecated.php	21.28 KB	-rw-r--r--
ms-files.php	2.79 KB	-rw-r--r--
ms-functions.php	90.36 KB	-rw-r--r--
ms-load.php	19.58 KB	-rw-r--r--
ms-network.php	3.69 KB	-rw-r--r--
ms-settings.php	4.1 KB	-rw-r--r--
ms-site.php	40.75 KB	-rw-r--r--
nav-menu-template.php	25.37 KB	-rw-r--r--
nav-menu.php	43.23 KB	-rw-r--r--
option.php	102.78 KB	-rw-r--r--
pluggable-deprecated.php	6.18 KB	-rw-r--r--
pluggable.php	124.92 KB	-rw-r--r--
plugin.php	35.81 KB	-rw-r--r--
post-formats.php	6.9 KB	-rw-r--r--
post-template.php	67.51 KB	-rw-r--r--
post-thumbnail-template.php	10.62 KB	-rw-r--r--
post.php	298.06 KB	-rw-r--r--
query.php	36.67 KB	-rw-r--r--
registration-functions.php	200 B	-rw-r--r--
registration.php	200 B	-rw-r--r--
rest-api.php	100.54 KB	-rw-r--r--
revision.php	30.51 KB	-rw-r--r--
rewrite.php	19.11 KB	-rw-r--r--
robots-template.php	5.06 KB	-rw-r--r--
rss-functions.php	277 B	-rw-r--r--
rss.php	22.66 KB	-rw-r--r--
script-loader.php	159.72 KB	-rw-r--r--
script-modules.php	12.02 KB	-rw-r--r--
session.php	258 B	-rw-r--r--
shortcodes.php	23.47 KB	-rw-r--r--
sitemaps.php	3.16 KB	-rw-r--r--
speculative-loading.php	11.6 KB	-rw-r--r--
spl-autoload-compat.php	441 B	-rw-r--r--
style-engine.php	7.86 KB	-rw-r--r--
taxonomy.php	174.13 KB	-rw-r--r--
template-canvas.php	544 B	-rw-r--r--
template-loader.php	4.17 KB	-rw-r--r--
template.php	35.96 KB	-rw-r--r--
theme-i18n.json	1.85 KB	-rw-r--r--
theme-previews.php	2.82 KB	-rw-r--r--
theme-templates.php	3.96 KB	-rw-r--r--
theme.json	9.26 KB	-rw-r--r--
theme.php	131.49 KB	-rw-r--r--
update.php	37.37 KB	-rw-r--r--
user.php	176.08 KB	-rw-r--r--
utf8.php	6.81 KB	-rw-r--r--
vars.php	6.45 KB	-rw-r--r--
version.php	1.08 KB	-rw-r--r--
view-config.php	18.64 KB	-rw-r--r--
view-transitions.php	602 B	-rw-r--r--
widgets.php	69.21 KB	-rw-r--r--
wp-db.php	445 B	-rw-r--r--
wp-diff.php	792 B	-rw-r--r--

Code Editor : compat.php

<?php
/**
 * WordPress implementation for PHP functions either missing from older PHP versions or not included by default.
 *
 * This file is loaded extremely early and the functions can be relied upon by drop-ins.
 * Ergo, please ensure you do not rely on external functions when writing code for this file.
 * Only use functions built into PHP or are defined in this file and have adequate testing
 * and error suppression to ensure the file will run correctly and not break websites.
 *
 * @package PHP
 * @access private
 */

// If gettext isn't available.
if ( ! function_exists( '_' ) ) {
	/**
	 * Compat function to mimic _(), an alias of gettext().
	 *
	 * @since 0.71
	 *
	 * @see https://php.net/manual/en/function.gettext.php
	 *
	 * @param string $message The message being translated.
	 * @return string
	 */
	function _( $message ) {
		return $message;
	}
}

/**
 * Returns whether PCRE/u (PCRE_UTF8 modifier) is available for use.
 *
 * @ignore
 * @since 4.2.2
 * @since 6.9.0 Deprecated the `$set` argument.
 * @access private
 *
 * @param bool $set Deprecated. This argument is no longer used for testing purposes.
 */
function _wp_can_use_pcre_u( $set = null ) {
	static $utf8_pcre = null;

if ( isset( $set ) ) {
		_deprecated_argument( __FUNCTION__, '6.9.0' );
	}

if ( isset( $utf8_pcre ) ) {
		return $utf8_pcre;
	}

$utf8_pcre = true;
	set_error_handler(
		function ( $errno, $errstr ) use ( &$utf8_pcre ) {
			if ( str_starts_with( $errstr, 'preg_match():' ) ) {
				$utf8_pcre = false;
				return true;
			}

return false;
		},
		E_WARNING
	);

/*
	 * Attempt to compile a PCRE pattern with the PCRE_UTF8 flag. For
	 * systems lacking Unicode support this will trigger a warning
	 * during compilation, which the error handler will intercept.
	 */
	preg_match( '//u', '' );
	restore_error_handler();

return $utf8_pcre;
}

/**
 * Indicates if a given slug for a character set represents the UTF-8 text encoding.
 *
 * A charset is considered to represent UTF-8 if it is a case-insensitive match
 * of "UTF-8" with or without the hyphen.
 *
 * Example:
 *
 *     true  === _is_utf8_charset( 'UTF-8' );
 *     true  === _is_utf8_charset( 'utf8' );
 *     false === _is_utf8_charset( 'latin1' );
 *     false === _is_utf8_charset( 'UTF 8' );
 *
 *     // Only strings match.
 *     false === _is_utf8_charset( [ 'charset' => 'utf-8' ] );
 *
 * `is_utf8_charset` should be used outside of this file.
 *
 * @ignore
 * @since 6.6.1
 *
 * @param string $charset_slug Slug representing a text character encoding, or "charset".
 *                             E.g. "UTF-8", "Windows-1252", "ISO-8859-1", "SJIS".
 *
 * @return bool Whether the slug represents the UTF-8 encoding.
 */
function _is_utf8_charset( $charset_slug ) {
	if ( ! is_string( $charset_slug ) ) {
		return false;
	}

return (
		0 === strcasecmp( 'UTF-8', $charset_slug ) ||
		0 === strcasecmp( 'UTF8', $charset_slug )
	);
}

if ( ! function_exists( 'mb_chr' ) ) :
	/**
	 * Compat function to mimic mb_chr().
	 *
	 * @ignore
	 * @since 7.1.0
	 *
	 * @see _mb_ord()
	 *
	 * @param int          $codepoint A Unicode codepoint value, e.g. 128024 for U+1F418 ELEPHANT
	 * @param "UTF-8"|null $encoding  Must be 'UTF-8' or null.
	 * @return string|false A string containing the requested character, if it can be represented in the specified encoding or false on failure.
	 */
	function mb_chr( $codepoint, $encoding = null ) {
		return _mb_chr( $codepoint, $encoding );
	}
endif;

/**
 * Internal compat function to mimic mb_chr().
 *
 * @ignore
 * @since 7.1.0
 *
 * @param int          $codepoint A Unicode codepoint value, e.g. 128024 for U+1F418 ELEPHANT
 * @param "UTF-8"|null $encoding  Must be 'UTF-8' or null.
 * @return string|false A string containing the requested character, if it can be represented in the specified encoding or false on failure.
 */
function _mb_chr( $codepoint, $encoding = null ) {
	if ( ! is_int( $codepoint ) || ( isset( $encoding ) && 'UTF-8' !== $encoding ) ) {
		return false;
	}

// Pre-check to ensure a valid code point.
	if (
		$codepoint < 0 ||
		( $codepoint >= 0xD800 && $codepoint <= 0xDFFF ) ||
		$codepoint > 0x10FFFF
	) {
		return false;
	}

if ( $codepoint <= 0x7F ) {
		return chr( $codepoint );
	}

if ( $codepoint <= 0x7FF ) {
		$byte1 = chr( ( $codepoint >> 6 ) | 0xC0 );
		$byte2 = chr( $codepoint & 0x3F | 0x80 );

return "{$byte1}{$byte2}";
	}

if ( $codepoint <= 0xFFFF ) {
		$byte1 = chr( ( $codepoint >> 12 ) | 0xE0 );
		$byte2 = chr( ( $codepoint >> 6 ) & 0x3F | 0x80 );
		$byte3 = chr( $codepoint & 0x3F | 0x80 );

return "{$byte1}{$byte2}{$byte3}";
	}

// Any values above U+10FFFF are eliminated above in the pre-check.
	$byte1 = chr( ( $codepoint >> 18 ) | 0xF0 );
	$byte2 = chr( ( $codepoint >> 12 ) & 0x3F | 0x80 );
	$byte3 = chr( ( $codepoint >> 6 ) & 0x3F | 0x80 );
	$byte4 = chr( $codepoint & 0x3F | 0x80 );

return "{$byte1}{$byte2}{$byte3}{$byte4}";
}

if ( ! function_exists( 'mb_ord' ) ) :
	/**
	 * Compat function to mimic mb_ord().
	 *
	 * @ignore
	 * @since 7.1.0
	 *
	 * @see _mb_ord()
	 *
	 * @param string       $string   Return the code point at the start of this string.
	 * @param "UTF-8"|null $encoding Must be 'UTF-8' or null.
	 * @return int|false The Unicode code point for the first character of string or false on failure.
	 */
	function mb_ord( $string, $encoding = null ) {
		return _mb_ord( $string, $encoding );
	}
endif;

/**
 * Internal compat function to mimic mb_ord().
 *
 * @ignore
 * @since 7.1.0
 *
 * @param string       $string   Return the code point at the start of this string.
 * @param "UTF-8"|null $encoding Must be 'UTF-8' or null.
 * @return int|false The Unicode code point for the first character of string or false on failure.
 */
function _mb_ord( $string, $encoding = null ) {
	if ( ! is_string( $string ) || '' === $string || ( isset( $encoding ) && 'UTF-8' !== $encoding ) ) {
		return false;
	}

$byte_length    = 0;
	$invalid_length = 0;
	$found_count    = _wp_scan_utf8( $string, $byte_length, $invalid_length, null, 1 );

if ( 1 !== $found_count ) {
		return false;
	}

// These are valid code points, so no further validation is required.
	$b0 = ord( $string[0] );

switch ( $byte_length ) {
		case 1:
			return $b0;

case 2:
			return (
				( ( $b0 & 0x1F ) << 6 ) |
				( ( ord( $string[1] ) & 0x3F ) )
			);

case 3:
			return (
				( ( $b0 & 0x0F ) << 12 ) |
				( ( ord( $string[1] ) & 0x3F ) << 6 ) |
				( ( ord( $string[2] ) & 0x3F ) )
			);

case 4:
			return (
				( ( $b0 & 0x07 ) << 18 ) |
				( ( ord( $string[1] ) & 0x3F ) << 12 ) |
				( ( ord( $string[2] ) & 0x3F ) << 6 ) |
				( ( ord( $string[3] ) & 0x3F ) )
			);
	}

return false;
}

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 supports UTF-8 and non-shifting single-byte encodings. For all other encodings
 * expect the substrings to be misaligned. When the given encoding (or the `blog_charset`
 * if none is provided) isn’t UTF-8 then the function returns the output of {@see \substr()}.
 *
 * @ignore
 * @since 3.2.0
 *
 * @param string      $str      The string to extract the substring from.
 * @param int         $start    Character offset at which to start the substring extraction.
 * @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 '';
	}

// The solution below works only for UTF-8; treat all other encodings as byte streams.
	if ( ! _is_utf8_charset( $encoding ?? get_option( 'blog_charset' ) ) ) {
		$result = is_null( $length ) ? substr( $str, $start ) : substr( $str, $start, $length );

/*
		 * For an out-of-range start, substr() returns false on PHP < 8.0 but an
		 * empty string on PHP >= 8.0. mb_substr() always returns an empty string,
		 * so normalize to match its behavior across all supported PHP versions.
		 */
		return false === $result ? '' : $result;
	}

$total_length = ( $start < 0 || $length < 0 )
		? _wp_utf8_codepoint_count( $str )
		: 0;

$normalized_start = $start < 0
		? max( 0, $total_length + $start )
		: $start;

/*
	 * The starting offset is provided as characters, which means this needs to
	 * find how many bytes that many characters occupies at the start of the string.
	 */
	$starting_byte_offset = _wp_utf8_codepoint_span( $str, 0, $normalized_start );

$normalized_length = $length < 0
		? max( 0, $total_length - $normalized_start + $length )
		: $length;

/*
	 * This is the main step. It finds how many bytes the given length of code points
	 * occupies in the input, starting at the byte offset calculated above.
	 */
	$byte_length = isset( $normalized_length )
		? _wp_utf8_codepoint_span( $str, $starting_byte_offset, $normalized_length )
		: ( strlen( $str ) - $starting_byte_offset );

// The result is a normal byte-level substring using the computed ranges.
	return substr( $str, $starting_byte_offset, $byte_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 supports UTF-8 and non-shifting single-byte encodings. For all other
 * encodings expect the counts to be wrong. When the given encoding (or the
 * `blog_charset` if none is provided) isn’t UTF-8 then the function returns
 * the byte-count of the provided string.
 *
 * @ignore
 * @since 4.2.0
 *
 * @param string      $str      The string to retrieve the character length from.
 * @param string|null $encoding Optional. Count characters according to this encoding.
 *                              Default is to consult `blog_charset`.
 * @return int Count of code points if UTF-8, byte length otherwise.
 */
function _mb_strlen( $str, $encoding = null ) {
	return _is_utf8_charset( $encoding ?? get_option( 'blog_charset' ) )
		? _wp_utf8_codepoint_count( $str )
		: strlen( $str );
}

if ( ! function_exists( 'utf8_encode' ) ) :
	if ( extension_loaded( 'mbstring' ) ) :
		/**
		 * Converts a string from ISO-8859-1 to UTF-8.
		 *
		 * @deprecated Use {@see \mb_convert_encoding()} instead.
		 *
		 * @since 6.9.0
		 *
		 * @param string $iso_8859_1_text Text treated as ISO-8859-1 (latin1) bytes.
		 * @return string Text converted into a UTF-8.
		 */
		function utf8_encode( $iso_8859_1_text ): string {
			_deprecated_function( __FUNCTION__, '6.9.0', 'mb_convert_encoding' );

return mb_convert_encoding( $iso_8859_1_text, 'UTF-8', 'ISO-8859-1' );
		}

else :
		/**
		 * @ignore
		 * @private
		 *
		 * @since 6.9.0
		 */
		function utf8_encode( $iso_8859_1_text ): string {
			_deprecated_function( __FUNCTION__, '6.9.0', 'mb_convert_encoding' );

return _wp_utf8_encode_fallback( $iso_8859_1_text );
		}

endif;
endif;

if ( ! function_exists( 'utf8_decode' ) ) :
	if ( extension_loaded( 'mbstring' ) ) :
		/**
		 * Converts a string from UTF-8 to ISO-8859-1.
		 *
		 * @deprecated Use {@see \mb_convert_encoding()} instead.
		 *
		 * @since 6.9.0
		 *
		 * @param string $utf8_text Text treated as UTF-8.
		 * @return string Text converted into ISO-8859-1.
		 */
		function utf8_decode( $utf8_text ): string {
			_deprecated_function( __FUNCTION__, '6.9.0', 'mb_convert_encoding' );

return mb_convert_encoding( $utf8_text, 'ISO-8859-1', 'UTF-8' );
		}

else :
		/**
		 * @ignore
		 * @private
		 *
		 * @since 6.9.0
		 */
		function utf8_decode( $utf8_text ): string {
			_deprecated_function( __FUNCTION__, '6.9.0', 'mb_convert_encoding' );

return _wp_utf8_decode_fallback( $utf8_text );
		}

endif;
endif;

// sodium_crypto_box() was introduced with Sodium in PHP 7.2, but the extension may not be enabled.
if ( ! function_exists( 'sodium_crypto_box' ) ) {
	require ABSPATH . WPINC . '/sodium_compat/autoload.php';
}

if ( ! function_exists( 'array_is_list' ) ) {
	/**
	 * Polyfill for `array_is_list()` function added in PHP 8.1.
	 *
	 * Determines if the given array is a list.
	 *
	 * An array is considered a list if its keys consist of consecutive numbers from 0 to count($array)-1.
	 *
	 * @see https://github.com/symfony/polyfill-php81/tree/main
	 *
	 * @since 6.5.0
	 *
	 * @param array<mixed> $arr The array being evaluated.
	 * @return bool True if array is a list, false otherwise.
	 */
	function array_is_list( $arr ) {
		if ( ( array() === $arr ) || ( array_values( $arr ) === $arr ) ) {
			return true;
		}

$next_key = -1;

foreach ( $arr as $k => $v ) {
			if ( ++$next_key !== $k ) {
				return false;
			}
		}

return true;
	}
}

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 ) {
		if ( '' === $needle ) {
			return true;
		}

return 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 ) {
			return '' === $needle;
		}

$len = strlen( $needle );

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

if ( ! function_exists( 'array_find' ) ) {
	/**
	 * Polyfill for `array_find()` function added in PHP 8.4.
	 *
	 * Searches an array for the first element that passes a given callback.
	 *
	 * @since 6.8.0
	 *
	 * @param array    $array    The array to search.
	 * @param callable $callback The callback to run for each element.
	 * @return mixed|null The first element in the array that passes the `$callback`, otherwise null.
	 */
	function array_find( array $array, callable $callback ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		foreach ( $array as $key => $value ) {
			if ( $callback( $value, $key ) ) {
				return $value;
			}
		}

return null;
	}
}

if ( ! function_exists( 'array_find_key' ) ) {
	/**
	 * Polyfill for `array_find_key()` function added in PHP 8.4.
	 *
	 * Searches an array for the first key that passes a given callback.
	 *
	 * @since 6.8.0
	 *
	 * @param array    $array    The array to search.
	 * @param callable $callback The callback to run for each element.
	 * @return int|string|null The first key in the array that passes the `$callback`, otherwise null.
	 */
	function array_find_key( array $array, callable $callback ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		foreach ( $array as $key => $value ) {
			if ( $callback( $value, $key ) ) {
				return $key;
			}
		}

return null;
	}
}

if ( ! function_exists( 'array_any' ) ) {
	/**
	 * Polyfill for `array_any()` function added in PHP 8.4.
	 *
	 * Checks if any element of an array passes a given callback.
	 *
	 * @since 6.8.0
	 *
	 * @param array    $array    The array to check.
	 * @param callable $callback The callback to run for each element.
	 * @return bool True if any element in the array passes the `$callback`, otherwise false.
	 */
	function array_any( array $array, callable $callback ): bool { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		foreach ( $array as $key => $value ) {
			if ( $callback( $value, $key ) ) {
				return true;
			}
		}

return false;
	}
}

if ( ! function_exists( 'array_all' ) ) {
	/**
	 * Polyfill for `array_all()` function added in PHP 8.4.
	 *
	 * Checks if all elements of an array pass a given callback.
	 *
	 * @since 6.8.0
	 *
	 * @param array    $array    The array to check.
	 * @param callable $callback The callback to run for each element.
	 * @return bool True if all elements in the array pass the `$callback`, otherwise false.
	 */
	function array_all( array $array, callable $callback ): bool { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		foreach ( $array as $key => $value ) {
			if ( ! $callback( $value, $key ) ) {
				return false;
			}
		}

return true;
	}
}

if ( ! function_exists( 'array_first' ) ) {
	/**
	 * Polyfill for `array_first()` function added in PHP 8.5.
	 *
	 * Returns the first element of an array.
	 *
	 * @since 6.9.0
	 *
	 * @param array $array The array to get the first element from.
	 * @return mixed|null The first element of the array, or null if the array is empty.
	 */
	function array_first( array $array ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		if ( empty( $array ) ) {
			return null;
		}

foreach ( $array as $value ) {
			return $value;
		}
	}
}

if ( ! function_exists( 'array_last' ) ) {
	/**
	 * Polyfill for `array_last()` function added in PHP 8.5.
	 *
	 * Returns the last element of an array.
	 *
	 * @since 6.9.0
	 *
	 * @param array $array The array to get the last element from.
	 * @return mixed|null The last element of the array, or null if the array is empty.
	 */
	function array_last( array $array ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		if ( empty( $array ) ) {
			return null;
		}

return $array[ array_key_last( $array ) ];
	}
}

if ( ! function_exists( 'clamp' ) ) {
	/**
	 * Polyfill for `clamp()` function added in PHP 8.6.
	 *
	 * Clamps a value to be within the range of a given minimum and maximum.
	 *
	 * If the value is within the bounds, the original value is returned.
	 * If it is not within the bounds, the closest bound is returned.
	 *
	 * @since 7.1.0
	 *
	 * @param mixed $value The value to clamp.
	 * @param mixed $min   The minimum bound. Must be less than or equal to `$max`.
	 * @param mixed $max   The maximum bound. Must be greater than or equal to `$min`.
	 * @return mixed The clamped value. Either `$value`, `$min`, or `$max`.
	 *
	 * @throws ValueError               If `$min` is greater than `$max`, or if `$min` or `$max` is NAN, and the ValueError class exists (PHP 8.0+ or polyfilled).
	 * @throws InvalidArgumentException If `$min` is greater than `$max`, or if `$min` or `$max` is NAN, and the ValueError class does not exist (PHP 7.x).
	 *
	 * @phpstan-template TValue
	 * @phpstan-template TMin
	 * @phpstan-template TMax
	 * @phpstan-param TValue $value
	 * @phpstan-param TMin   $min
	 * @phpstan-param TMax   $max
	 * @phpstan-return TValue|TMin|TMax
	 */
	function clamp( $value, $min, $max ) {
		$throw_value_error = static function ( string $message ) {
			// The ValueError class was introduced in PHP 8, so in 7.4 throw InvalidArgumentException instead.
			if ( ! class_exists( 'ValueError', false ) ) {
				throw new InvalidArgumentException( $message );
			}
			throw new ValueError( $message );
		};

if ( is_float( $min ) && is_nan( $min ) ) {
			$throw_value_error( 'clamp(): Argument #2 ($min) must not be NAN' );
		}

if ( is_float( $max ) && is_nan( $max ) ) {
			$throw_value_error( 'clamp(): Argument #3 ($max) must not be NAN' );
		}

if ( $max < $min ) {
			$throw_value_error( 'clamp(): Argument #2 ($min) must be smaller than or equal to argument #3 ($max)' );
		}

/*
		 * The upper bound is checked before the lower bound to match the order in PHP's
		 * implementation. Comparison in PHP is not transitive when operands of different
		 * types are mixed (for example, comparing against a bool coerces both operands to
		 * bool), so both bounds can compare as exceeded at once, and the first check wins.
		 */
		if ( $value > $max ) {
			return $max;
		}

if ( $value < $min ) {
			return $min;
		}

return $value;
	}
}

// IMAGETYPE_AVIF constant is only defined in PHP 8.x or later.
if ( ! defined( 'IMAGETYPE_AVIF' ) ) {
	define( 'IMAGETYPE_AVIF', 19 );
}

// IMG_AVIF constant is only defined in PHP 8.x or later.
if ( ! defined( 'IMG_AVIF' ) ) {
	define( 'IMG_AVIF', IMAGETYPE_AVIF );
}

// IMAGETYPE_HEIF constant is only defined in PHP 8.5 or later.
if ( ! defined( 'IMAGETYPE_HEIF' ) ) {
	define( 'IMAGETYPE_HEIF', 20 );
}

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