?? GreyFile

?? GreyFile — Mystic File Browser

Current path: home/webdevt/www/demo1/wp-includes/

?? Editing: utf8.php

<?php

if ( extension_loaded( 'mbstring' ) ) :
	/**
	 * Determines if a given byte string represents a valid UTF-8 encoding.
	 *
	 * Note that it’s unlikely for non-UTF-8 data to validate as UTF-8, but
	 * it is still possible. Many texts are simultaneously valid UTF-8,
	 * valid US-ASCII, and valid ISO-8859-1 (`latin1`).
	 *
	 * Example:
	 *
	 *     true === wp_is_valid_utf8( '' );
	 *     true === wp_is_valid_utf8( 'just a test' );
	 *     true === wp_is_valid_utf8( "\xE2\x9C\x8F" );    // Pencil, U+270F.
	 *     true === wp_is_valid_utf8( "\u{270F}" );        // Pencil, U+270F.
	 *     true === wp_is_valid_utf8( '✏' );              // Pencil, U+270F.
	 *
	 *     false === wp_is_valid_utf8( "just \xC0 test" ); // Invalid bytes.
	 *     false === wp_is_valid_utf8( "\xE2\x9C" );       // Invalid/incomplete sequences.
	 *     false === wp_is_valid_utf8( "\xC1\xBF" );       // Overlong sequences.
	 *     false === wp_is_valid_utf8( "\xED\xB0\x80" );   // Surrogate halves.
	 *     false === wp_is_valid_utf8( "B\xFCch" );        // ISO-8859-1 high-bytes.
	 *                                                     // E.g. The “ü” in ISO-8859-1 is a single byte 0xFC,
	 *                                                     // but in UTF-8 is the two-byte sequence 0xC3 0xBC.
	 *
	 *  A “valid” string consists of “well-formed UTF-8 code unit sequence[s],” meaning
	 *  that the bytes conform to the UTF-8 encoding scheme, all characters use the minimal
	 *  byte sequence required by UTF-8, and that no sequence encodes a UTF-16 surrogate
	 *  code point or any character above the representable range.
	 *
	 * @see https://www.unicode.org/versions/Unicode16.0.0/core-spec/chapter-3/#G32860
	 *
	 * @since 6.9.0
	 *
	 * @param string $bytes String which might contain text encoded as UTF-8.
	 * @return bool Whether the provided bytes can decode as valid UTF-8.
	 */
	function wp_is_valid_utf8( string $bytes ): bool {
		return mb_check_encoding( $bytes, 'UTF-8' );
	}
else :
	/**
	 * Fallback function for validating UTF-8.
	 *
	 * @ignore
	 * @private
	 *
	 * @since 6.9.0
	 */
	function wp_is_valid_utf8( string $string ): bool {
		return _wp_is_valid_utf8_fallback( $string );
	}
endif;

if (
	extension_loaded( 'mbstring' ) &&
	// Maximal subpart substitution introduced by php/php-src@04e59c916f12b322ac55f22314e31bd0176d01cb.
	version_compare( PHP_VERSION, '8.1.6', '>=' )
) :
	/**
	 * Replaces ill-formed UTF-8 byte sequences with the Unicode Replacement Character.
	 *
	 * Knowing what to do in the presence of text encoding issues can be complicated.
	 * This function replaces invalid spans of bytes to neutralize any corruption that
	 * may be there and prevent it from causing further problems downstream.
	 *
	 * However, it’s not always ideal to replace those bytes. In some settings it may
	 * be best to leave the invalid bytes in the string so that downstream code can handle
	 * them in a specific way. Replacing the bytes too early, like escaping for HTML too
	 * early, can introduce other forms of corruption and data loss.
	 *
	 * When in doubt, use this function to replace spans of invalid bytes.
	 *
	 * Replacement follows the “maximal subpart” algorithm for secure and interoperable
	 * strings. This can lead to sequences of multiple replacement characters in a row.
	 *
	 * Example:
	 *
	 *     // Valid strings come through unchanged.
	 *     'test' === wp_scrub_utf8( 'test' );
	 *
	 *     // Invalid sequences of bytes are replaced.
	 *     $invalid = "the byte \xC0 is never allowed in a UTF-8 string.";
	 *     "the byte \u{FFFD} is never allowed in a UTF-8 string." === wp_scrub_utf8( $invalid, true );
	 *     'the byte � is never allowed in a UTF-8 string.' === wp_scrub_utf8( $invalid, true );
	 *
	 *     // Maximal subparts are replaced individually.
	 *     '.�.' === wp_scrub_utf8( ".\xC0." );              // C0 is never valid.
	 *     '.�.' === wp_scrub_utf8( ".\xE2\x8C." );          // Missing A3 at end.
	 *     '.��.' === wp_scrub_utf8( ".\xE2\x8C\xE2\x8C." ); // Maximal subparts replaced separately.
	 *     '.��.' === wp_scrub_utf8( ".\xC1\xBF." );         // Overlong sequence.
	 *     '.���.' === wp_scrub_utf8( ".\xED\xA0\x80." );    // Surrogate half.
	 *
	 * Note! The Unicode Replacement Character is itself a Unicode character (U+FFFD).
	 * Once a span of invalid bytes has been replaced by one, it will not be possible
	 * to know whether the replacement character was originally intended to be there
	 * or if it is the result of scrubbing bytes. It is ideal to leave replacement for
	 * display only, but some contexts (e.g. generating XML or passing data into a
	 * large language model) require valid input strings.
	 *
	 * @since 6.9.0
	 *
	 * @see https://www.unicode.org/versions/Unicode16.0.0/core-spec/chapter-5/#G40630
	 *
	 * @param string $text String which is assumed to be UTF-8 but may contain invalid sequences of bytes.
	 * @return string Input text with invalid sequences of bytes replaced with the Unicode replacement character.
	 */
	function wp_scrub_utf8( $text ) {
		/*
		 * While it looks like setting the substitute character could fail,
		 * the internal PHP code will never fail when provided a valid
		 * code point as a number. In this case, there’s no need to check
		 * its return value to see if it succeeded.
		 */
		$prev_replacement_character = mb_substitute_character();
		mb_substitute_character( 0xFFFD );
		$scrubbed = mb_scrub( $text, 'UTF-8' );
		mb_substitute_character( $prev_replacement_character );

return $scrubbed;
	}
else :
	/**
	 * Fallback function for scrubbing UTF-8.
	 *
	 * @ignore
	 * @private
	 *
	 * @since 6.9.0
	 */
	function wp_scrub_utf8( $text ) {
		return _wp_scrub_utf8_fallback( $text );
	}
endif;

if ( _wp_can_use_pcre_u() ) :
	/**
	 * Returns whether the given string contains Unicode noncharacters.
	 *
	 * XML recommends against using noncharacters and HTML forbids their
	 * use in attribute names. Unicode recommends that they not be used
	 * in open exchange of data.
	 *
	 * Noncharacters are code points within the following ranges:
	 *  - U+FDD0–U+FDEF
	 *  - U+FFFE–U+FFFF
	 *  - U+1FFFE, U+1FFFF, U+2FFFE, U+2FFFF, …, U+10FFFE, U+10FFFF
	 *
	 * @see https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-23/#G12612
	 * @see https://www.w3.org/TR/xml/#charsets
	 * @see https://html.spec.whatwg.org/#attributes-2
	 *
	 * @since 6.9.0
	 *
	 * @param string $text Are there noncharacters in this string?
	 * @return bool Whether noncharacters were found in the string.
	 */
	function wp_has_noncharacters( string $text ): bool {
		return 1 === preg_match(
			'/[\x{FDD0}-\x{FDEF}\x{FFFE}\x{FFFF}\x{1FFFE}\x{1FFFF}\x{2FFFE}\x{2FFFF}\x{3FFFE}\x{3FFFF}\x{4FFFE}\x{4FFFF}\x{5FFFE}\x{5FFFF}\x{6FFFE}\x{6FFFF}\x{7FFFE}\x{7FFFF}\x{8FFFE}\x{8FFFF}\x{9FFFE}\x{9FFFF}\x{AFFFE}\x{AFFFF}\x{BFFFE}\x{BFFFF}\x{CFFFE}\x{CFFFF}\x{DFFFE}\x{DFFFF}\x{EFFFE}\x{EFFFF}\x{FFFFE}\x{FFFFF}\x{10FFFE}\x{10FFFF}]/u',
			$text
		);
	}
else :
	/**
	 * Fallback function for detecting noncharacters in a text.
	 *
	 * @ignore
	 * @private
	 *
	 * @since 6.9.0
	 */
	function wp_has_noncharacters( string $text ): bool {
		return _wp_has_noncharacters_fallback( $text );
	}
endif;

?? abilities-api | ??? Delete
?? ai-client | ??? Delete
?? assets | ??? Delete
?? block-bindings | ??? Delete
?? block-patterns | ??? Delete
?? block-supports | ??? Delete
?? blocks | ??? Delete
?? build | ??? Delete
?? certificates | ??? Delete
?? collaboration | ??? Delete
?? css | ??? Delete
?? customize | ??? Delete
?? fonts | ??? Delete
?? html-api | ??? Delete
?? ID3 | ??? Delete
?? images | ??? Delete
?? interactivity-api | ??? Delete
?? IXR | ??? Delete
?? js | ??? Delete
?? l10n | ??? Delete
?? php-ai-client | ??? Delete
?? php-compat | ??? Delete
?? PHPMailer | ??? Delete
?? pomo | ??? Delete
?? Requests | ??? Delete
?? rest-api | ??? Delete
?? SimplePie | ??? Delete
?? sitemaps | ??? Delete
?? sodium_compat | ??? Delete
?? style-engine | ??? Delete
?? Text | ??? Delete
?? theme-compat | ??? Delete
?? widgets | ??? Delete
?? abilities-api.php | ?? Edit | ??? Delete
?? abilities.php | ?? Edit | ??? Delete
?? admin-bar.php | ?? Edit | ??? Delete
?? ai-client.php | ?? Edit | ??? Delete
?? atomlib.php | ?? Edit | ??? Delete
?? author-template.php | ?? Edit | ??? Delete
?? block-bindings.php | ?? Edit | ??? Delete
?? block-editor.php | ?? Edit | ??? Delete
?? block-i18n.json | ?? Edit | ??? Delete
?? block-patterns.php | ?? Edit | ??? Delete
?? block-template-utils.php | ?? Edit | ??? Delete
?? block-template.php | ?? Edit | ??? Delete
?? blocks.php | ?? Edit | ??? Delete
?? bookmark-template.php | ?? Edit | ??? Delete
?? bookmark.php | ?? Edit | ??? Delete
?? cache-compat.php | ?? Edit | ??? Delete
?? cache.php | ?? Edit | ??? Delete
?? canonical.php | ?? Edit | ??? Delete
?? capabilities.php | ?? Edit | ??? Delete
?? category-template.php | ?? Edit | ??? Delete
?? category.php | ?? Edit | ??? Delete
?? class-avif-info.php | ?? Edit | ??? Delete
?? class-feed.php | ?? Edit | ??? Delete
?? class-http.php | ?? Edit | ??? Delete
?? class-oembed.php | ?? Edit | ??? Delete
?? class-phpass.php | ?? Edit | ??? Delete
?? class-phpmailer.php | ?? Edit | ??? Delete
?? class-pop3.php | ?? Edit | ??? Delete
?? class-requests.php | ?? Edit | ??? Delete
?? class-smtp.php | ?? Edit | ??? Delete
?? class-snoopy.php | ?? Edit | ??? Delete
?? class-walker-category-dropdown.php | ?? Edit | ??? Delete
?? class-walker-category.php | ?? Edit | ??? Delete
?? class-walker-comment.php | ?? Edit | ??? Delete
?? class-walker-nav-menu.php | ?? Edit | ??? Delete
?? class-walker-page-dropdown.php | ?? Edit | ??? Delete
?? class-walker-page.php | ?? Edit | ??? Delete
?? class-wp-admin-bar.php | ?? Edit | ??? Delete
?? class-wp-ajax-response.php | ?? Edit | ??? Delete
?? class-wp-application-passwords.php | ?? Edit | ??? Delete
?? class-wp-block-bindings-registry.php | ?? Edit | ??? Delete
?? class-wp-block-bindings-source.php | ?? Edit | ??? Delete
?? class-wp-block-list.php | ?? Edit | ??? Delete
?? class-wp-block-metadata-registry.php | ?? Edit | ??? Delete
?? class-wp-block-parser-block.php | ?? Edit | ??? Delete
?? class-wp-block-parser-frame.php | ?? Edit | ??? Delete
?? class-wp-block-parser.php | ?? Edit | ??? Delete
?? class-wp-block-pattern-categories-registry.php | ?? Edit | ??? Delete
?? class-wp-block-patterns-registry.php | ?? Edit | ??? Delete
?? class-wp-block-processor.php | ?? Edit | ??? Delete
?? class-wp-block-styles-registry.php | ?? Edit | ??? Delete
?? class-wp-block-supports.php | ?? Edit | ??? Delete
?? class-wp-block-template.php | ?? Edit | ??? Delete
?? class-wp-block-templates-registry.php | ?? Edit | ??? Delete
?? class-wp-block-type-registry.php | ?? Edit | ??? Delete
?? class-wp-block-type.php | ?? Edit | ??? Delete
?? class-wp-block.php | ?? Edit | ??? Delete
?? class-wp-classic-to-block-menu-converter.php | ?? Edit | ??? Delete
?? class-wp-comment-query.php | ?? Edit | ??? Delete
?? class-wp-comment.php | ?? Edit | ??? Delete
?? class-wp-connector-registry.php | ?? Edit | ??? Delete
?? class-wp-customize-control.php | ?? Edit | ??? Delete
?? class-wp-customize-manager.php | ?? Edit | ??? Delete
?? class-wp-customize-nav-menus.php | ?? Edit | ??? Delete
?? class-wp-customize-panel.php | ?? Edit | ??? Delete
?? class-wp-customize-section.php | ?? Edit | ??? Delete
?? class-wp-customize-setting.php | ?? Edit | ??? Delete
?? class-wp-customize-widgets.php | ?? Edit | ??? Delete
?? class-wp-date-query.php | ?? Edit | ??? Delete
?? class-wp-dependencies.php | ?? Edit | ??? Delete
?? class-wp-dependency.php | ?? Edit | ??? Delete
?? class-wp-duotone.php | ?? Edit | ??? Delete
?? class-wp-editor.php | ?? Edit | ??? Delete
?? class-wp-embed.php | ?? Edit | ??? Delete
?? class-wp-error.php | ?? Edit | ??? Delete
?? class-wp-exception.php | ?? Edit | ??? Delete
?? class-wp-fatal-error-handler.php | ?? Edit | ??? Delete
?? class-wp-feed-cache-transient.php | ?? Edit | ??? Delete
?? class-wp-feed-cache.php | ?? Edit | ??? Delete
?? class-wp-hook.php | ?? Edit | ??? Delete
?? class-wp-http-cookie.php | ?? Edit | ??? Delete
?? class-wp-http-curl.php | ?? Edit | ??? Delete
?? class-wp-http-encoding.php | ?? Edit | ??? Delete
?? class-wp-http-proxy.php | ?? Edit | ??? Delete
?? class-wp-http-requests-response.php | ?? Edit | ??? Delete
?? class-wp-http-response.php | ?? Edit | ??? Delete
?? class-wp-http-streams.php | ?? Edit | ??? Delete
?? class-wp-http.php | ?? Edit | ??? Delete
?? class-wp-icons-registry.php | ?? Edit | ??? Delete
?? class-wp-image-editor-gd.php | ?? Edit | ??? Delete
?? class-wp-image-editor-imagick.php | ?? Edit | ??? Delete
?? class-wp-image-editor.php | ?? Edit | ??? Delete
?? class-wp-list-util.php | ?? Edit | ??? Delete
?? class-wp-locale-switcher.php | ?? Edit | ??? Delete
?? class-wp-locale.php | ?? Edit | ??? Delete
?? class-wp-matchesmapregex.php | ?? Edit | ??? Delete
?? class-wp-meta-query.php | ?? Edit | ??? Delete
?? class-wp-metadata-lazyloader.php | ?? Edit | ??? Delete
?? class-wp-navigation-fallback.php | ?? Edit | ??? Delete
?? class-wp-network-query.php | ?? Edit | ??? Delete
?? class-wp-object-cache.php | ?? Edit | ??? Delete
?? class-wp-oembed-controller.php | ?? Edit | ??? Delete
?? class-wp-oembed.php | ?? Edit | ??? Delete
?? class-wp-paused-extensions-storage.php | ?? Edit | ??? Delete
?? class-wp-phpmailer.php | ?? Edit | ??? Delete
?? class-wp-plugin-dependencies.php | ?? Edit | ??? Delete
?? class-wp-post-type.php | ?? Edit | ??? Delete
?? class-wp-post.php | ?? Edit | ??? Delete
?? class-wp-query.php | ?? Edit | ??? Delete
?? class-wp-recovery-mode-cookie-service.php | ?? Edit | ??? Delete
?? class-wp-recovery-mode-email-service.php | ?? Edit | ??? Delete
?? class-wp-recovery-mode-key-service.php | ?? Edit | ??? Delete
?? class-wp-recovery-mode-link-service.php | ?? Edit | ??? Delete
?? class-wp-recovery-mode.php | ?? Edit | ??? Delete
?? class-wp-rewrite.php | ?? Edit | ??? Delete
?? class-wp-role.php | ?? Edit | ??? Delete
?? class-wp-roles.php | ?? Edit | ??? Delete
?? class-wp-script-modules.php | ?? Edit | ??? Delete
?? class-wp-scripts.php | ?? Edit | ??? Delete
?? class-wp-session-tokens.php | ?? Edit | ??? Delete
?? class-wp-simplepie-file.php | ?? Edit | ??? Delete
?? class-wp-simplepie-sanitize-kses.php | ?? Edit | ??? Delete
?? class-wp-site-query.php | ?? Edit | ??? Delete
?? class-wp-site.php | ?? Edit | ??? Delete
?? class-wp-speculation-rules.php | ?? Edit | ??? Delete
?? class-wp-styles.php | ?? Edit | ??? Delete
?? class-wp-tax-query.php | ?? Edit | ??? Delete
?? class-wp-taxonomy.php | ?? Edit | ??? Delete
?? class-wp-term-query.php | ?? Edit | ??? Delete
?? class-wp-text-diff-renderer-inline.php | ?? Edit | ??? Delete
?? class-wp-text-diff-renderer-table.php | ?? Edit | ??? Delete
?? class-wp-textdomain-registry.php | ?? Edit | ??? Delete
?? class-wp-theme-json-data.php | ?? Edit | ??? Delete
?? class-wp-theme-json-resolver.php | ?? Edit | ??? Delete
?? class-wp-theme-json-schema.php | ?? Edit | ??? Delete
?? class-wp-theme-json.php | ?? Edit | ??? Delete
?? class-wp-theme.php | ?? Edit | ??? Delete
?? class-wp-token-map.php | ?? Edit | ??? Delete
?? class-wp-url-pattern-prefixer.php | ?? Edit | ??? Delete
?? class-wp-user-meta-session-tokens.php | ?? Edit | ??? Delete
?? class-wp-user-query.php | ?? Edit | ??? Delete
?? class-wp-user-request.php | ?? Edit | ??? Delete
?? class-wp-user.php | ?? Edit | ??? Delete
?? class-wp-walker.php | ?? Edit | ??? Delete
?? class-wp-widget-factory.php | ?? Edit | ??? Delete
?? class-wp-widget.php | ?? Edit | ??? Delete
?? class-wp.php | ?? Edit | ??? Delete
?? class.wp-scripts.php | ?? Edit | ??? Delete
?? class.wp-styles.php | ?? Edit | ??? Delete
?? comment-template.php | ?? Edit | ??? Delete
?? comment.php | ?? Edit | ??? Delete
?? compat-utf8.php | ?? Edit | ??? Delete
?? compat.php | ?? Edit | ??? Delete
?? connectors.php | ?? Edit | ??? Delete
?? cron.php | ?? Edit | ??? Delete
?? default-constants.php | ?? Edit | ??? Delete
?? default-filters.php | ?? Edit | ??? Delete
?? default-widgets.php | ?? Edit | ??? Delete
?? deprecated.php | ?? Edit | ??? Delete
?? embed-template.php | ?? Edit | ??? Delete
?? error-protection.php | ?? Edit | ??? Delete
?? feed-atom-comments.php | ?? Edit | ??? Delete
?? feed-atom.php | ?? Edit | ??? Delete
?? feed-rdf.php | ?? Edit | ??? Delete
?? feed-rss.php | ?? Edit | ??? Delete
?? feed-rss2-comments.php | ?? Edit | ??? Delete
?? feed-rss2.php | ?? Edit | ??? Delete
?? feed.php | ?? Edit | ??? Delete
?? fonts.php | ?? Edit | ??? Delete
?? formatting.php | ?? Edit | ??? Delete
?? functions.php | ?? Edit | ??? Delete
?? functions.wp-scripts.php | ?? Edit | ??? Delete
?? functions.wp-styles.php | ?? Edit | ??? Delete
?? general-template.php | ?? Edit | ??? Delete
?? global-styles-and-settings.php | ?? Edit | ??? Delete
?? http.php | ?? Edit | ??? Delete
?? https-detection.php | ?? Edit | ??? Delete
?? https-migration.php | ?? Edit | ??? Delete
?? kses.php | ?? Edit | ??? Delete
?? l10n.php | ?? Edit | ??? Delete
?? link-template.php | ?? Edit | ??? Delete
?? load.php | ?? Edit | ??? Delete
?? locale.php | ?? Edit | ??? Delete
?? media-template.php | ?? Edit | ??? Delete
?? media.php | ?? Edit | ??? Delete
?? meta.php | ?? Edit | ??? Delete
?? ms-blogs.php | ?? Edit | ??? Delete
?? ms-default-constants.php | ?? Edit | ??? Delete
?? ms-default-filters.php | ?? Edit | ??? Delete
?? ms-deprecated.php | ?? Edit | ??? Delete
?? ms-files.php | ?? Edit | ??? Delete
?? ms-functions.php | ?? Edit | ??? Delete
?? ms-load.php | ?? Edit | ??? Delete
?? ms-network.php | ?? Edit | ??? Delete
?? ms-settings.php | ?? Edit | ??? Delete
?? ms-site.php | ?? Edit | ??? Delete
?? nav-menu-template.php | ?? Edit | ??? Delete
?? nav-menu.php | ?? Edit | ??? Delete
?? option.php | ?? Edit | ??? Delete
?? pluggable-deprecated.php | ?? Edit | ??? Delete
?? plugin.php | ?? Edit | ??? Delete
?? post-formats.php | ?? Edit | ??? Delete
?? post-template.php | ?? Edit | ??? Delete
?? post-thumbnail-template.php | ?? Edit | ??? Delete
?? post.php | ?? Edit | ??? Delete
?? query.php | ?? Edit | ??? Delete
?? registration-functions.php | ?? Edit | ??? Delete
?? registration.php | ?? Edit | ??? Delete
?? rest-api.php | ?? Edit | ??? Delete
?? revision.php | ?? Edit | ??? Delete
?? rewrite.php | ?? Edit | ??? Delete
?? robots-template.php | ?? Edit | ??? Delete
?? rss-functions.php | ?? Edit | ??? Delete
?? rss.php | ?? Edit | ??? Delete
?? script-loader.php | ?? Edit | ??? Delete
?? script-modules.php | ?? Edit | ??? Delete
?? session.php | ?? Edit | ??? Delete
?? shortcodes.php | ?? Edit | ??? Delete
?? sitemaps.php | ?? Edit | ??? Delete
?? speculative-loading.php | ?? Edit | ??? Delete
?? spl-autoload-compat.php | ?? Edit | ??? Delete
?? style-engine.php | ?? Edit | ??? Delete
?? taxonomy.php | ?? Edit | ??? Delete
?? template-canvas.php | ?? Edit | ??? Delete
?? template-loader.php | ?? Edit | ??? Delete
?? template.php | ?? Edit | ??? Delete
?? theme-i18n.json | ?? Edit | ??? Delete
?? theme-previews.php | ?? Edit | ??? Delete
?? theme-templates.php | ?? Edit | ??? Delete
?? theme.json | ?? Edit | ??? Delete
?? theme.php | ?? Edit | ??? Delete
?? user.php | ?? Edit | ??? Delete
?? utf8.php | ?? Edit | ??? Delete
?? vars.php | ?? Edit | ??? Delete
?? version.php | ?? Edit | ??? Delete
?? view-transitions.php | ?? Edit | ??? Delete
?? widgets.php | ?? Edit | ??? Delete
?? wp-db.php | ?? Edit | ??? Delete
?? wp-diff.php | ?? Edit | ??? Delete