GlobalFunctions.php
1d66c7fcd0d2master

GlobalFunctions.php
View Options

			<?php
			/**
			* Global functions used everywhere.
			*
			* This program is free software; you can redistribute it and/or modify
			* it under the terms of the GNU General Public License as published by
			* the Free Software Foundation; either version 2 of the License, or
			* (at your option) any later version.
			*
			* This program is distributed in the hope that it will be useful,
			* but WITHOUT ANY WARRANTY; without even the implied warranty of
			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
			* GNU General Public License for more details.
			*
			* You should have received a copy of the GNU General Public License along
			* with this program; if not, write to the Free Software Foundation, Inc.,
			* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
			* http://www.gnu.org/copyleft/gpl.html
			*
			* @file
			*/

			use MediaWiki\HookContainer\HookRunner;
			use MediaWiki\Libs\UnpackFailedException;
			use MediaWiki\Logger\LoggerFactory;
			use MediaWiki\MediaWikiServices;
			use MediaWiki\ProcOpenError;
			use MediaWiki\Request\WebRequest;
			use MediaWiki\Shell\Shell;
			use MediaWiki\StubObject\StubUserLang;
			use MediaWiki\Title\Title;
			use MediaWiki\Utils\MWTimestamp;
			use MediaWiki\Utils\UrlUtils;
			use Wikimedia\AtEase\AtEase;
			use Wikimedia\ParamValidator\TypeDef\ExpiryDef;
			use Wikimedia\RequestTimeout\RequestTimeout;

			/**
			* Load an extension
			*
			* This queues an extension to be loaded through
			* the ExtensionRegistry system.
			*
			* @param string $ext Name of the extension to load
			* @param string\|null $path Absolute path of where to find the extension.json file
			* @since 1.25
			*/
			function wfLoadExtension( $ext, $path = null ) {
			if ( !$path ) {
			global $wgExtensionDirectory;
			$path = "$wgExtensionDirectory/$ext/extension.json";
			}
			ExtensionRegistry::getInstance()->queue( $path );
			}

			/**
			* Load multiple extensions at once
			*
			* Same as wfLoadExtension, but more efficient if you
			* are loading multiple extensions.
			*
			* If you want to specify custom paths, you should interact with
			* ExtensionRegistry directly.
			*
			* @see wfLoadExtension
			* @param string[] $exts Array of extension names to load
			* @since 1.25
			*/
			function wfLoadExtensions( array $exts ) {
			global $wgExtensionDirectory;
			$registry = ExtensionRegistry::getInstance();
			foreach ( $exts as $ext ) {
			$registry->queue( "$wgExtensionDirectory/$ext/extension.json" );
			}
			}

			/**
			* Load a skin
			*
			* @see wfLoadExtension
			* @param string $skin Name of the extension to load
			* @param string\|null $path Absolute path of where to find the skin.json file
			* @since 1.25
			*/
			function wfLoadSkin( $skin, $path = null ) {
			if ( !$path ) {
			global $wgStyleDirectory;
			$path = "$wgStyleDirectory/$skin/skin.json";
			}
			ExtensionRegistry::getInstance()->queue( $path );
			}

			/**
			* Load multiple skins at once
			*
			* @see wfLoadExtensions
			* @param string[] $skins Array of extension names to load
			* @since 1.25
			*/
			function wfLoadSkins( array $skins ) {
			global $wgStyleDirectory;
			$registry = ExtensionRegistry::getInstance();
			foreach ( $skins as $skin ) {
			$registry->queue( "$wgStyleDirectory/$skin/skin.json" );
			}
			}

			/**
			* Like array_diff( $arr1, $arr2 ) except that it works with two-dimensional arrays.
			* @param string[]\|array[] $arr1
			* @param string[]\|array[] $arr2
			* @return array
			*/
			function wfArrayDiff2( $arr1, $arr2 ) {
			/**
			* @param string\|array $a
			* @param string\|array $b
			*/
			$comparator = static function ( $a, $b ): int {
			if ( is_string( $a ) && is_string( $b ) ) {
			return strcmp( $a, $b );
			}
			if ( !is_array( $a ) && !is_array( $b ) ) {
			throw new InvalidArgumentException(
			'This function assumes that array elements are all strings or all arrays'
			);
			}
			if ( count( $a ) !== count( $b ) ) {
			return count( $a ) <=> count( $b );
			} else {
			reset( $a );
			reset( $b );
			while ( key( $a ) !== null && key( $b ) !== null ) {
			$valueA = current( $a );
			$valueB = current( $b );
			$cmp = strcmp( $valueA, $valueB );
			if ( $cmp !== 0 ) {
			return $cmp;
			}
			next( $a );
			next( $b );
			}
			return 0;
			}
			};
			return array_udiff( $arr1, $arr2, $comparator );
			}

			/**
			* Merge arrays in the style of PermissionManager::getPermissionErrors, with duplicate removal
			* e.g.
			* wfMergeErrorArrays(
			* [ [ 'x' ] ],
			* [ [ 'x', '2' ] ],
			* [ [ 'x' ] ],
			* [ [ 'y' ] ]
			* );
			* returns:
			* [
			* [ 'x', '2' ],
			* [ 'x' ],
			* [ 'y' ]
			* ]
			*
			* @param array[] ...$args
			* @return array
			*/
			function wfMergeErrorArrays( ...$args ) {
			$out = [];
			foreach ( $args as $errors ) {
			foreach ( $errors as $params ) {
			$originalParams = $params;
			if ( $params[0] instanceof MessageSpecifier ) {
			$params = [ $params[0]->getKey(), ...$params[0]->getParams() ];
			}
			# @todo FIXME: Sometimes get nested arrays for $params,
			# which leads to E_NOTICEs
			$spec = implode( "\t", $params );
			$out[$spec] = $originalParams;
			}
			}
			return array_values( $out );
			}

			/**
			* Insert an array into another array after the specified key. If the key is
			* not present in the input array, it is returned without modification.
			*
			* @param array $array
			* @param array $insert The array to insert.
			* @param mixed $after The key to insert after.
			* @return array
			*/
			function wfArrayInsertAfter( array $array, array $insert, $after ) {
			// Find the offset of the element to insert after.
			$keys = array_keys( $array );
			$offsetByKey = array_flip( $keys );

			if ( !\array_key_exists( $after, $offsetByKey ) ) {
			return $array;
			}
			$offset = $offsetByKey[$after];

			// Insert at the specified offset
			$before = array_slice( $array, 0, $offset + 1, true );
			$after = array_slice( $array, $offset + 1, count( $array ) - $offset, true );

			$output = $before + $insert + $after;

			return $output;
			}

			/**
			* Recursively converts the parameter (an object) to an array with the same data
			*
			* @phpcs:ignore MediaWiki.Commenting.FunctionComment.ObjectTypeHintParam
			* @param object\|array $objOrArray
			* @param bool $recursive
			* @return array
			*/
			function wfObjectToArray( $objOrArray, $recursive = true ) {
			$array = [];
			if ( is_object( $objOrArray ) ) {
			$objOrArray = get_object_vars( $objOrArray );
			}
			foreach ( $objOrArray as $key => $value ) {
			if ( $recursive && ( is_object( $value ) \|\| is_array( $value ) ) ) {
			$value = wfObjectToArray( $value );
			}

			$array[$key] = $value;
			}

			return $array;
			}

			/**
			* Get a random decimal value in the domain of [0, 1), in a way
			* not likely to give duplicate values for any realistic
			* number of articles.
			*
			* @note This is designed for use in relation to Special:RandomPage
			* and the page_random database field.
			*
			* @return string
			*/
			function wfRandom() {
			// The maximum random value is "only" 2^31-1, so get two random
			// values to reduce the chance of dupes
			$max = mt_getrandmax() + 1;
			$rand = number_format( ( mt_rand() * $max + mt_rand() ) / $max / $max, 12, '.', '' );
			return $rand;
			}

			/**
			* Get a random string containing a number of pseudo-random hex characters.
			*
			* @note This is not secure, if you are trying to generate some sort
			* of token please use MWCryptRand instead.
			*
			* @param int $length The length of the string to generate
			* @return string
			* @since 1.20
			*/
			function wfRandomString( $length = 32 ) {
			$str = '';
			for ( $n = 0; $n < $length; $n += 7 ) {
			$str .= sprintf( '%07x', mt_rand() & 0xfffffff );
			}
			return substr( $str, 0, $length );
			}

			/**
			* We want some things to be included as literal characters in our title URLs
			* for prettiness, which urlencode encodes by default. According to RFC 1738,
			* all of the following should be safe:
			*
			* ;:@&=$-_.+!*'(),
			*
			* RFC 1738 says ~ is unsafe, however RFC 3986 considers it an unreserved
			* character which should not be encoded. More importantly, google chrome
			* always converts %7E back to ~, and converting it in this function can
			* cause a redirect loop (T105265).
			*
			* But + is not safe because it's used to indicate a space; &= are only safe in
			* paths and not in queries (and we don't distinguish here); ' seems kind of
			* scary; and urlencode() doesn't touch -_. to begin with. Plus, although /
			* is reserved, we don't care. So the list we unescape is:
			*
			* ;:@$!*(),/~
			*
			* However, IIS7 redirects fail when the url contains a colon (see T24709),
			* so no fancy : for IIS7.
			*
			* %2F in the page titles seems to fatally break for some reason.
			*
			* @param string $s
			* @return string
			*/
			function wfUrlencode( $s ) {
			static $needle;

			if ( $s === null ) {
			// Reset $needle for testing.
			$needle = null;
			return '';
			}

			if ( $needle === null ) {
			$needle = [ '%3B', '%40', '%24', '%21', '%2A', '%28', '%29', '%2C', '%2F', '%7E' ];
			if ( !isset( $_SERVER['SERVER_SOFTWARE'] ) \|\|
			!str_contains( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/7' )
			) {
			$needle[] = '%3A';
			}
			}

			$s = urlencode( $s );
			$s = str_ireplace(
			$needle,
			[ ';', '@', '$', '!', '*', '(', ')', ',', '/', '~', ':' ],
			$s
			);

			return $s;
			}

			/**
			* This function takes one or two arrays as input, and returns a CGI-style string, e.g.
			* "days=7&limit=100". Options in the first array override options in the second.
			* Options set to null or false will not be output.
			*
			* @param array $array1 ( String\|Array )
			* @param array\|null $array2 ( String\|Array )
			* @param string $prefix
			* @return string
			*/
			function wfArrayToCgi( $array1, $array2 = null, $prefix = '' ) {
			if ( $array2 !== null ) {
			$array1 += $array2;
			}

			$cgi = '';
			foreach ( $array1 as $key => $value ) {
			if ( $value !== null && $value !== false ) {
			if ( $cgi != '' ) {
			$cgi .= '&';
			}
			if ( $prefix !== '' ) {
			$key = $prefix . "[$key]";
			}
			if ( is_array( $value ) ) {
			$firstTime = true;
			foreach ( $value as $k => $v ) {
			$cgi .= $firstTime ? '' : '&';
			if ( is_array( $v ) ) {
			$cgi .= wfArrayToCgi( $v, null, $key . "[$k]" );
			} else {
			$cgi .= urlencode( $key . "[$k]" ) . '=' . urlencode( $v );
			}
			$firstTime = false;
			}
			} else {
			if ( is_object( $value ) ) {
			$value = $value->__toString();
			}
			$cgi .= urlencode( $key ) . '=' . urlencode( $value );
			}
			}
			}
			return $cgi;
			}

			/**
			* This is the logical opposite of wfArrayToCgi(): it accepts a query string as
			* its argument and returns the same string in array form. This allows compatibility
			* with legacy functions that accept raw query strings instead of nice
			* arrays. Of course, keys and values are urldecode()d.
			*
			* @param string $query Query string
			* @return string[] Array version of input
			*/
			function wfCgiToArray( $query ) {
			if ( isset( $query[0] ) && $query[0] == '?' ) {
			$query = substr( $query, 1 );
			}
			$bits = explode( '&', $query );
			$ret = [];
			foreach ( $bits as $bit ) {
			if ( $bit === '' ) {
			continue;
			}
			if ( strpos( $bit, '=' ) === false ) {
			// Pieces like &qwerty become 'qwerty' => '' (at least this is what php does)
			$key = $bit;
			$value = '';
			} else {
			[ $key, $value ] = explode( '=', $bit );
			}
			$key = urldecode( $key );
			$value = urldecode( $value );
			if ( strpos( $key, '[' ) !== false ) {
			$keys = array_reverse( explode( '[', $key ) );
			$key = array_pop( $keys );
			$temp = $value;
			foreach ( $keys as $k ) {
			$k = substr( $k, 0, -1 );
			$temp = [ $k => $temp ];
			}
			if ( isset( $ret[$key] ) && is_array( $ret[$key] ) ) {
			$ret[$key] = array_merge( $ret[$key], $temp );
			} else {
			$ret[$key] = $temp;
			}
			} else {
			$ret[$key] = $value;
			}
			}
			return $ret;
			}

			/**
			* Append a query string to an existing URL, which may or may not already
			* have query string parameters already. If so, they will be combined.
			*
			* @param string $url
			* @param string\|array $query String or associative array
			* @return string
			*/
			function wfAppendQuery( $url, $query ) {
			if ( is_array( $query ) ) {
			$query = wfArrayToCgi( $query );
			}
			if ( $query != '' ) {
			// Remove the fragment, if there is one
			$fragment = false;
			$hashPos = strpos( $url, '#' );
			if ( $hashPos !== false ) {
			$fragment = substr( $url, $hashPos );
			$url = substr( $url, 0, $hashPos );
			}

			// Add parameter
			if ( strpos( $url, '?' ) === false ) {
			$url .= '?';
			} else {
			$url .= '&';
			}
			$url .= $query;

			// Put the fragment back
			if ( $fragment !== false ) {
			$url .= $fragment;
			}
			}
			return $url;
			}

			/**
			* @deprecated Get a UrlUtils from services, or construct your own
			* @internal
			* @return UrlUtils from services if initialized, otherwise make one from globals
			*/
			function wfGetUrlUtils(): UrlUtils {
			global $wgServer, $wgCanonicalServer, $wgInternalServer, $wgRequest, $wgHttpsPort,
			$wgUrlProtocols;

			if ( MediaWikiServices::hasInstance() ) {
			$services = MediaWikiServices::getInstance();
			if ( $services->hasService( 'UrlUtils' ) ) {
			return $services->getUrlUtils();
			}
			}

			return new UrlUtils( [
			// UrlUtils throws if the relevant $wg(\|Canonical\|Internal) variable is null, but the old
			// implementations implicitly converted it to an empty string (presumably by mistake).
			// Preserve the old behavior for compatibility.
			UrlUtils::SERVER => $wgServer ?? '',
			UrlUtils::CANONICAL_SERVER => $wgCanonicalServer ?? '',
			UrlUtils::INTERNAL_SERVER => $wgInternalServer ?? '',
			UrlUtils::FALLBACK_PROTOCOL => $wgRequest ? $wgRequest->getProtocol()
			: WebRequest::detectProtocol(),
			UrlUtils::HTTPS_PORT => $wgHttpsPort,
			UrlUtils::VALID_PROTOCOLS => $wgUrlProtocols,
			] );
			}

			/**
			* Expand a potentially local URL to a fully-qualified URL using $wgServer
			* (or one of its alternatives).
			*
			* The meaning of the PROTO_* constants is as follows:
			* PROTO_HTTP: Output a URL starting with http://
			* PROTO_HTTPS: Output a URL starting with https://
			* PROTO_RELATIVE: Output a URL starting with // (protocol-relative URL)
			* PROTO_CURRENT: Output a URL starting with either http:// or https:// , depending
			* on which protocol was used for the current incoming request
			* PROTO_CANONICAL: For URLs without a domain, like /w/index.php , use $wgCanonicalServer.
			* For protocol-relative URLs, use the protocol of $wgCanonicalServer
			* PROTO_INTERNAL: Like PROTO_CANONICAL, but uses $wgInternalServer instead of $wgCanonicalServer
			*
			* If $url specifies a protocol, or $url is domain-relative and $wgServer
			* specifies a protocol, PROTO_HTTP, PROTO_HTTPS, PROTO_RELATIVE and
			* PROTO_CURRENT do not change that.
			*
			* Parent references (/../) in the path are resolved (as in wfRemoveDotSegments).
			*
			* @deprecated since 1.39, use UrlUtils::expand()
			* @param string $url An URL; can be absolute (e.g. http://example.com/foo/bar),
			* protocol-relative (//example.com/foo/bar) or domain-relative (/foo/bar).
			* @param string\|int\|null $defaultProto One of the PROTO_* constants, as described above.
			* @return string\|false Fully-qualified URL, current-path-relative URL or false if
			* no valid URL can be constructed
			*/
			function wfExpandUrl( $url, $defaultProto = PROTO_CURRENT ) {
			return wfGetUrlUtils()->expand( (string)$url, $defaultProto ) ?? false;
			}

			/**
			* Get the wiki's "server", i.e. the protocol and host part of the URL, with a
			* protocol specified using a PROTO_* constant as in wfExpandUrl()
			*
			* @deprecated since 1.39, use UrlUtils::getServer()
			* @since 1.32
			* @param string\|int\|null $proto One of the PROTO_* constants.
			* @return string The URL
			*/
			function wfGetServerUrl( $proto ) {
			return wfGetUrlUtils()->getServer( $proto ) ?? '';
			}

			/**
			* This function will reassemble a URL parsed with wfParseURL. This is useful
			* if you need to edit part of a URL and put it back together.
			*
			* This is the basic structure used (brackets contain keys for $urlParts):
			* [scheme][delimiter][user]:[pass]@[host]:[port][path]?[query]#[fragment]
			*
			* @deprecated since 1.39, use UrlUtils::assemble()
			* @since 1.19
			* @param array $urlParts URL parts, as output from wfParseUrl
			* @return string URL assembled from its component parts
			*/
			function wfAssembleUrl( $urlParts ) {
			return UrlUtils::assemble( (array)$urlParts );
			}

			/**
			* Remove all dot-segments in the provided URL path. For example,
			* '/a/./b/../c/' becomes '/a/c/'. For details on the algorithm, please see
			* RFC3986 section 5.2.4.
			*
			* @deprecated since 1.39, use UrlUtils::removeDotSegments()
			* @since 1.19
			* @param string $urlPath URL path, potentially containing dot-segments
			* @return string URL path with all dot-segments removed
			*/
			function wfRemoveDotSegments( $urlPath ) {
			return UrlUtils::removeDotSegments( (string)$urlPath );
			}

			/**
			* Returns a partial regular expression of recognized URL protocols, e.g. "http:\/\/\|https:\/\/"
			*
			* @deprecated since 1.39, use UrlUtils::validProtocols()
			* @param bool $includeProtocolRelative If false, remove '//' from the returned protocol list.
			* DO NOT USE this directly, use wfUrlProtocolsWithoutProtRel() instead
			* @return string
			*/
			function wfUrlProtocols( $includeProtocolRelative = true ) {
			return $includeProtocolRelative ? wfGetUrlUtils()->validProtocols() :
			wfGetUrlUtils()->validAbsoluteProtocols();
			}

			/**
			* Like wfUrlProtocols(), but excludes '//' from the protocol list. Use this if
			* you need a regex that matches all URL protocols but does not match protocol-
			* relative URLs
			* @deprecated since 1.39, use UrlUtils::validAbsoluteProtocols()
			* @return string
			*/
			function wfUrlProtocolsWithoutProtRel() {
			return wfGetUrlUtils()->validAbsoluteProtocols();
			}

			/**
			* parse_url() work-alike, but non-broken. Differences:
			*
			* 1) Handles protocols that don't use :// (e.g., mailto: and news:, as well as
			* protocol-relative URLs) correctly.
			* 2) Adds a "delimiter" element to the array (see (2)).
			* 3) Verifies that the protocol is on the $wgUrlProtocols allowed list.
			* 4) Rejects some invalid URLs that parse_url doesn't, e.g. the empty string or URLs starting with
			* a line feed character.
			*
			* @deprecated since 1.39, use UrlUtils::parse()
			* @param string $url A URL to parse
			* @return string[]\|false Bits of the URL in an associative array, or false on failure.
			* Possible fields:
			* - scheme: URI scheme (protocol), e.g. 'http', 'mailto'. Lowercase, always present, but can
			* be an empty string for protocol-relative URLs.
			* - delimiter: either '://', ':' or '//'. Always present.
			* - host: domain name / IP. Always present, but could be an empty string, e.g. for file: URLs.
			* - port: port number. Will be missing when port is not explicitly specified.
			* - user: user name, e.g. for HTTP Basic auth URLs such as http://user:pass@example.com/
			* Missing when there is no username.
			* - pass: password, same as above.
			* - path: path including the leading /. Will be missing when empty (e.g. 'http://example.com')
			* - query: query string (as a string; see wfCgiToArray() for parsing it), can be missing.
			* - fragment: the part after #, can be missing.
			*/
			function wfParseUrl( $url ) {
			return wfGetUrlUtils()->parse( (string)$url ) ?? false;
			}

			/**
			* Take a URL, make sure it's expanded to fully qualified, and replace any
			* encoded non-ASCII Unicode characters with their UTF-8 original forms
			* for more compact display and legibility for local audiences.
			*
			* @deprecated since 1.39, use UrlUtils::expandIRI()
			* @param string $url
			* @return string
			*/
			function wfExpandIRI( $url ) {
			return wfGetUrlUtils()->expandIRI( (string)$url ) ?? '';
			}

			/**
			* Check whether a given URL has a domain that occurs in a given set of domains
			*
			* @deprecated since 1.39, use UrlUtils::expandIRI()
			* @param string $url
			* @param array $domains Array of domains (strings)
			* @return bool True if the host part of $url ends in one of the strings in $domains
			*/
			function wfMatchesDomainList( $url, $domains ) {
			return wfGetUrlUtils()->matchesDomainList( (string)$url, (array)$domains );
			}

			/**
			* Sends a line to the debug log if enabled or, optionally, to a comment in output.
			* In normal operation this is a NOP.
			*
			* Controlling globals:
			* $wgDebugLogFile - points to the log file
			* $wgDebugRawPage - if false, 'action=raw' hits will not result in debug output.
			* $wgDebugComments - if on, some debug items may appear in comments in the HTML output.
			*
			* @since 1.25 support for additional context data
			*
			* @param string $text
			* @param string\|bool $dest Destination of the message:
			* - 'all': both to the log and HTML (debug toolbar or HTML comments)
			* - 'private': excluded from HTML output
			* For backward compatibility, it can also take a boolean:
			* - true: same as 'all'
			* - false: same as 'private'
			* @param array $context Additional logging context data
			*/
			function wfDebug( $text, $dest = 'all', array $context = [] ) {
			global $wgDebugRawPage, $wgDebugLogPrefix;

			if ( !$wgDebugRawPage && wfIsDebugRawPage() ) {
			return;
			}

			$text = trim( $text );

			if ( $wgDebugLogPrefix !== '' ) {
			$context['prefix'] = $wgDebugLogPrefix;
			}
			$context['private'] = ( $dest === false \|\| $dest === 'private' );

			$logger = LoggerFactory::getInstance( 'wfDebug' );
			$logger->debug( $text, $context );
			}

			/**
			* Returns true if debug logging should be suppressed if $wgDebugRawPage = false
			* @return bool
			*/
			function wfIsDebugRawPage() {
			static $cache;
			if ( $cache !== null ) {
			return $cache;
			}
			// Check for raw action using $_GET not $wgRequest, since the latter might not be initialised yet
			// phpcs:ignore MediaWiki.Usage.SuperGlobalsUsage.SuperGlobals
			if ( ( isset( $_GET['action'] ) && $_GET['action'] == 'raw' )
			\|\| MW_ENTRY_POINT === 'load'
			) {
			$cache = true;
			} else {
			$cache = false;
			}
			return $cache;
			}

			/**
			* Send a line to a supplementary debug log file, if configured, or main debug
			* log if not.
			*
			* To configure a supplementary log file, set $wgDebugLogGroups[$logGroup] to
			* a string filename or an associative array mapping 'destination' to the
			* desired filename. The associative array may also contain a 'sample' key
			* with an integer value, specifying a sampling factor. Sampled log events
			* will be emitted with a 1 in N random chance.
			*
			* @since 1.23 support for sampling log messages via $wgDebugLogGroups.
			* @since 1.25 support for additional context data
			* @since 1.25 sample behavior dependent on configured $wgMWLoggerDefaultSpi
			*
			* @param string $logGroup
			* @param string $text
			* @param string\|bool $dest Destination of the message:
			* - 'all': both to the log and HTML (debug toolbar or HTML comments)
			* - 'private': only to the specific log if set in $wgDebugLogGroups and
			* discarded otherwise
			* For backward compatibility, it can also take a boolean:
			* - true: same as 'all'
			* - false: same as 'private'
			* @param array $context Additional logging context data
			*/
			function wfDebugLog(
			$logGroup, $text, $dest = 'all', array $context = []
			) {
			$text = trim( $text );

			$logger = LoggerFactory::getInstance( $logGroup );
			$context['private'] = ( $dest === false \|\| $dest === 'private' );
			$logger->info( $text, $context );
			}

			/**
			* Log for database errors
			*
			* @since 1.25 support for additional context data
			*
			* @param string $text Database error message.
			* @param array $context Additional logging context data
			*/
			function wfLogDBError( $text, array $context = [] ) {
			$logger = LoggerFactory::getInstance( 'wfLogDBError' );
			$logger->error( trim( $text ), $context );
			}

			/**
			* Logs a warning that a deprecated feature was used.
			*
			* To write a custom deprecation message, use wfDeprecatedMsg() instead.
			*
			* @param string $function Feature that is deprecated.
			* @param string\|false $version Version of MediaWiki that the feature
			* was deprecated in (Added in 1.19).
			* @param string\|bool $component Component to which the feature belongs.
			* If false, it is assumed the function is in MediaWiki core (Added in 1.19).
			* @param int $callerOffset How far up the call stack is the original
			* caller. 2 = function that called the function that called
			* wfDeprecated (Added in 1.20).
			* @throws InvalidArgumentException If the MediaWiki version
			* number specified by $version is neither a string nor false.
			*/
			function wfDeprecated( $function, $version = false, $component = false, $callerOffset = 2 ) {
			if ( !is_string( $version ) && $version !== false ) {
			throw new InvalidArgumentException(
			"MediaWiki version must either be a string or false. " .
			"Example valid version: '1.33'"
			);
			}

			MWDebug::deprecated( $function, $version, $component, $callerOffset + 1 );
			}

			/**
			* Log a deprecation warning with arbitrary message text. A caller
			* description will be appended. If the message has already been sent for
			* this caller, it won't be sent again.
			*
			* Although there are component and version parameters, they are not
			* automatically appended to the message. The message text should include
			* information about when the thing was deprecated. The component and version
			* are just used to implement $wgDeprecationReleaseLimit.
			*
			* @since 1.35
			* @param string $msg The message
			* @param string\|false $version Version of MediaWiki that the function
			* was deprecated in.
			* @param string\|bool $component Component to which the function belongs.
			* If false, it is assumed the function is in MediaWiki core.
			* @param int\|false $callerOffset How far up the call stack is the original
			* caller. 2 = function that called the function that called us. If false,
			* the caller description will not be appended.
			*/
			function wfDeprecatedMsg( $msg, $version = false, $component = false, $callerOffset = 2 ) {
			MWDebug::deprecatedMsg( $msg, $version, $component,
			$callerOffset === false ? false : $callerOffset + 1 );
			}

			/**
			* Send a warning either to the debug log or in a PHP error depending on
			* $wgDevelopmentWarnings. To log warnings in production, use wfLogWarning() instead.
			*
			* @param string $msg Message to send
			* @param int $callerOffset Number of items to go back in the backtrace to
			* find the correct caller (1 = function calling wfWarn, ...)
			* @param int $level PHP error level; defaults to E_USER_NOTICE;
			* only used when $wgDevelopmentWarnings is true
			*/
			function wfWarn( $msg, $callerOffset = 1, $level = E_USER_NOTICE ) {
			MWDebug::warning( $msg, $callerOffset + 1, $level, 'auto' );
			}

			/**
			* Send a warning as a PHP error and the debug log. This is intended for logging
			* warnings in production. For logging development warnings, use WfWarn instead.
			*
			* @param string $msg Message to send
			* @param int $callerOffset Number of items to go back in the backtrace to
			* find the correct caller (1 = function calling wfLogWarning, ...)
			* @param int $level PHP error level; defaults to E_USER_WARNING
			*/
			function wfLogWarning( $msg, $callerOffset = 1, $level = E_USER_WARNING ) {
			MWDebug::warning( $msg, $callerOffset + 1, $level, 'production' );
			}

			/**
			* Return a Language object from $langcode
			*
			* @deprecated since 1.41, use MediaWiki\Languages\LanguageFactory::getLanguage instead.
			* @param Language\|string\|bool $langcode Either:
			* - a Language object
			* - code of the language to get the message for, if it is
			* a valid code create a language for that language, if
			* it is a string but not a valid code then make a basic
			* language object
			* - a boolean: if it's false then use the global object for
			* the current user's language (as a fallback for the old parameter
			* functionality), or if it is true then use global object
			* for the wiki's content language.
			* @return Language\|StubUserLang
			*/
			function wfGetLangObj( $langcode = false ) {
			wfDeprecated( __FUNCTION__, '1.41' );
			# Identify which language to get or create a language object for.
			# Using is_object here due to Stub objects.
			if ( is_object( $langcode ) ) {
			# Great, we already have the object (hopefully)!
			return $langcode;
			}

			global $wgLanguageCode;
			$services = MediaWikiServices::getInstance();
			if ( $langcode === true \|\| $langcode === $wgLanguageCode ) {
			# $langcode is the language code of the wikis content language object.
			# or it is a boolean and value is true
			return $services->getContentLanguage();
			}

			global $wgLang;
			if ( $langcode === false \|\| $langcode === $wgLang->getCode() ) {
			# $langcode is the language code of user language object.
			# or it was a boolean and value is false
			return $wgLang;
			}

			$languageNames = $services->getLanguageNameUtils()->getLanguageNames();
			// FIXME: Can we use isSupportedLanguage here?
			if ( isset( $languageNames[$langcode] ) ) {
			# $langcode corresponds to a valid language.
			return $services->getLanguageFactory()->getLanguage( $langcode );
			}

			# $langcode is a string, but not a valid language code; use content language.
			wfDebug( "Invalid language code passed to wfGetLangObj, falling back to content language." );
			return $services->getContentLanguage();
			}

			/**
			* This is the function for getting translated interface messages.
			*
			* @see Message class for documentation how to use them.
			* @see https://www.mediawiki.org/wiki/Manual:Messages_API
			*
			* This function replaces all old wfMsg* functions.
			*
			* When the MessageSpecifier object is an instance of Message, a clone of the object is returned.
			* This is unlike the `new Message( … )` constructor, which returns a new object constructed from
			* scratch with the same key. This difference is mostly relevant when the passed object is an
			* instance of a subclass like RawMessage or ApiMessage.
			*
			* @param string\|string[]\|MessageSpecifier $key Message key, or array of keys, or a MessageSpecifier
			* @param mixed ...$params Normal message parameters
			* @return Message
			*
			* @since 1.17
			*
			* @see Message::__construct
			*/
			function wfMessage( $key, ...$params ) {
			if ( is_array( $key ) ) {
			// Fallback keys are not allowed in message specifiers
			$message = wfMessageFallback( ...$key );
			} else {
			$message = Message::newFromSpecifier( $key );
			}

			// We call Message::params() to reduce code duplication
			if ( $params ) {
			$message->params( ...$params );
			}

			return $message;
			}

			/**
			* This function accepts multiple message keys and returns a message instance
			* for the first message which is non-empty. If all messages are empty then an
			* instance of the last message key is returned.
			*
			* @param string ...$keys Message keys
			* @return Message
			*
			* @since 1.18
			*
			* @see Message::newFallbackSequence
			*/
			function wfMessageFallback( ...$keys ) {
			return Message::newFallbackSequence( ...$keys );
			}

			/**
			* Replace message parameter keys on the given formatted output.
			*
			* @param string $message
			* @param array $args
			* @return string
			* @internal
			*/
			function wfMsgReplaceArgs( $message, $args ) {
			# Fix windows line-endings
			# Some messages are split with explode("\n", $msg)
			$message = str_replace( "\r", '', $message );

			// Replace arguments
			if ( is_array( $args ) && $args ) {
			if ( is_array( $args[0] ) ) {
			$args = array_values( $args[0] );
			}
			$replacementKeys = [];
			foreach ( $args as $n => $param ) {
			$replacementKeys['$' . ( $n + 1 )] = $param;
			}
			$message = strtr( $message, $replacementKeys );
			}

			return $message;
			}

			/**
			* Get host name of the current machine, for use in error reporting.
			*
			* This helps to know which machine in a data center generated the
			* current page.
			*
			* @return string
			*/
			function wfHostname() {
			// Hostname overriding
			global $wgOverrideHostname;
			if ( $wgOverrideHostname !== false ) {
			return $wgOverrideHostname;
			}

			return php_uname( 'n' ) ?: 'unknown';
			}

			/**
			* Safety wrapper for debug_backtrace().
			*
			* Will return an empty array if debug_backtrace is disabled, otherwise
			* the output from debug_backtrace() (trimmed).
			*
			* @param int $limit This parameter can be used to limit the number of stack frames returned
			*
			* @return array Array of backtrace information
			*/
			function wfDebugBacktrace( $limit = 0 ) {
			static $disabled = null;

			if ( $disabled === null ) {
			$disabled = !function_exists( 'debug_backtrace' );
			if ( $disabled ) {
			wfDebug( "debug_backtrace() is disabled" );
			}
			}
			if ( $disabled ) {
			return [];
			}

			if ( $limit ) {
			return array_slice( debug_backtrace( DEBUG_BACKTRACE_PROVIDE_OBJECT, $limit + 1 ), 1 );
			} else {
			return array_slice( debug_backtrace(), 1 );
			}
			}

			/**
			* Get a debug backtrace as a string
			*
			* @param bool\|null $raw If true, the return value is plain text. If false, HTML.
			* Defaults to true if MW_ENTRY_POINT is 'cli', otherwise false.
			* @return string
			* @since 1.25 Supports $raw parameter.
			*/
			function wfBacktrace( $raw = null ) {
			$raw ??= MW_ENTRY_POINT === 'cli';
			if ( $raw ) {
			$frameFormat = "%s line %s calls %s()\n";
			$traceFormat = "%s";
			} else {
			$frameFormat = "<li>%s line %s calls %s()</li>\n";
			$traceFormat = "<ul>\n%s</ul>\n";
			}

			$frames = array_map( static function ( $frame ) use ( $frameFormat ) {
			$file = !empty( $frame['file'] ) ? basename( $frame['file'] ) : '-';
			$line = $frame['line'] ?? '-';
			$call = $frame['function'];
			if ( !empty( $frame['class'] ) ) {
			$call = $frame['class'] . $frame['type'] . $call;
			}
			return sprintf( $frameFormat, $file, $line, $call );
			}, wfDebugBacktrace() );

			return sprintf( $traceFormat, implode( '', $frames ) );
			}

			/**
			* Get the name of the function which called this function
			* wfGetCaller( 1 ) is the function with the wfGetCaller() call (ie. __FUNCTION__)
			* wfGetCaller( 2 ) [default] is the caller of the function running wfGetCaller()
			* wfGetCaller( 3 ) is the parent of that.
			*
			* @param int $level
			* @return string
			*/
			function wfGetCaller( $level = 2 ) {
			$backtrace = wfDebugBacktrace( $level + 1 );
			if ( isset( $backtrace[$level] ) ) {
			return wfFormatStackFrame( $backtrace[$level] );
			} else {
			return 'unknown';
			}
			}

			/**
			* Return a string consisting of callers in the stack. Useful sometimes
			* for profiling specific points.
			*
			* @param int\|false $limit The maximum depth of the stack frame to return, or false for the entire stack.
			* @return string
			*/
			function wfGetAllCallers( $limit = 3 ) {
			$trace = array_reverse( wfDebugBacktrace() );
			if ( !$limit \|\| $limit > count( $trace ) - 1 ) {
			$limit = count( $trace ) - 1;
			}
			$trace = array_slice( $trace, -$limit - 1, $limit );
			return implode( '/', array_map( 'wfFormatStackFrame', $trace ) );
			}

			/**
			* Return a string representation of frame
			*
			* @param array $frame
			* @return string
			*/
			function wfFormatStackFrame( $frame ) {
			if ( !isset( $frame['function'] ) ) {
			return 'NO_FUNCTION_GIVEN';
			}
			return isset( $frame['class'] ) && isset( $frame['type'] ) ?
			$frame['class'] . $frame['type'] . $frame['function'] :
			$frame['function'];
			}

			/**
			* Whether the client accept gzip encoding
			*
			* Uses the Accept-Encoding header to check if the client supports gzip encoding.
			* Use this when considering to send a gzip-encoded response to the client.
			*
			* @param bool $force Forces another check even if we already have a cached result.
			* @return bool
			*/
			function wfClientAcceptsGzip( $force = false ) {
			static $result = null;
			if ( $result === null \|\| $force ) {
			$result = false;
			if ( isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) ) {
			# @todo FIXME: We may want to disallow some broken browsers
			$m = [];
			if ( preg_match(
			'/\bgzip(?:;(q)=([0-9]+(?:\.[0-9]+)))?\b/',
			$_SERVER['HTTP_ACCEPT_ENCODING'],
			$m
			)
			) {
			if ( isset( $m[2] ) && ( $m[1] == 'q' ) && ( $m[2] == 0 ) ) {
			return $result;
			}
			wfDebug( "wfClientAcceptsGzip: client accepts gzip." );
			$result = true;
			}
			}
			}
			return $result;
			}

			/**
			* Escapes the given text so that it may be output using addWikiText()
			* without any linking, formatting, etc. making its way through. This
			* is achieved by substituting certain characters with HTML entities.
			* As required by the callers, "<nowiki>" is not used.
			*
			* @param string\|null\|false $input Text to be escaped
			* @param-taint $input escapes_html
			* @return string
			*/
			function wfEscapeWikiText( $input ): string {
			global $wgEnableMagicLinks;
			static $repl = null, $repl2 = null, $repl3 = null, $repl4 = null;
			if ( $repl === null \|\| defined( 'MW_PARSER_TEST' ) \|\| defined( 'MW_PHPUNIT_TEST' ) ) {
			// Tests depend upon being able to change $wgEnableMagicLinks, so don't cache
			// in those situations
			$repl = [
			'"' => '"', '&' => '&', "'" => ''', '<' => '<',
			'=' => '=', '>' => '>', '[' => '[', ']' => ']',
			'{' => '{', '\|' => '\|', '}' => '}',
			';' => ';', // a token inside language converter brackets
			'!!' => '!!', // a token inside table context
			"\n!" => "\n!", "\r!" => "\r!", // a token inside table context
			"\n#" => "\n#", "\r#" => "\r#",
			"\n" => "\n", "\r" => "\r",
			"\n:" => "\n:", "\r:" => "\r:",
			"\n " => "\n ", "\r " => "\r ",
			"\n\n" => "\n ", "\r\n" => " \n",
			"\n\r" => "\n ", "\r\r" => "\r ",
			"\n\t" => "\n ", "\r\t" => "\r ", // "\n\t\n" is treated like "\n\n"
			"\n----" => "\n----", "\r----" => "\r----",
			'__' => '__', '://' => '://',
			'~~~' => '~~~', // protect from PST, just to be safe(r)
			];

			$magicLinks = array_keys( array_filter( $wgEnableMagicLinks ) );
			// We have to catch everything "\s" matches in PCRE
			foreach ( $magicLinks as $magic ) {
			$repl["$magic "] = "$magic ";
			$repl["$magic\t"] = "$magic ";
			$repl["$magic\r"] = "$magic ";
			$repl["$magic\n"] = "$magic ";
			$repl["$magic\f"] = "$magic";
			}
			// Additionally escape the following characters at the beginning of the
			// string, in case they merge to form tokens when spliced into a
			// string. Tokens like -{ {{ [[ {\| etc are already escaped because
			// the second character is escaped above, but the following tokens
			// are handled here: \|+ \|- __FOO__ ~~~
			$repl3 = [
			'+' => '+', '-' => '-', '_' => '_', '~' => '~',
			];
			// Similarly, protect the following characters at the end of the
			// string, which could turn form the start of `__FOO__` or `~~~~`
			// A trailing newline could also form the unintended start of a
			// paragraph break if it is glued to a newline in the following
			// context.
			$repl4 = [
			'_' => '_', '~' => '~',
			"\n" => " ", "\r" => " ",
			"\t" => " ", // "\n\t\n" is treated like "\n\n"
			];

			// And handle protocols that don't use "://"
			global $wgUrlProtocols;
			$repl2 = [];
			foreach ( $wgUrlProtocols as $prot ) {
			if ( substr( $prot, -1 ) === ':' ) {
			$repl2[] = preg_quote( substr( $prot, 0, -1 ), '/' );
			}
			}
			$repl2 = $repl2 ? '/\b(' . implode( '\|', $repl2 ) . '):/i' : '/^(?!)/';
			}
			// Tell phan that $repl2, $repl3 and $repl4 will also be non-null here
			'@phan-var string $repl2';
			'@phan-var string $repl3';
			'@phan-var string $repl4';
			// This will also stringify input in case it's not a string
			$text = substr( strtr( "\n$input", $repl ), 1 );
			if ( $text === '' ) {
			return $text;
			}
			$first = strtr( $text[0], $repl3 ); // protect first character
			if ( strlen( $text ) > 1 ) {
			$text = $first . substr( $text, 1, -1 ) .
			strtr( substr( $text, -1 ), $repl4 ); // protect last character
			} else {
			// special case for single-character strings
			$text = strtr( $first, $repl4 ); // protect last character
			}
			$text = preg_replace( $repl2, '$1:', $text );
			return $text;
			}

			/**
			* Sets dest to source and returns the original value of dest
			* If source is NULL, it just returns the value, it doesn't set the variable
			* If force is true, it will set the value even if source is NULL
			*
			* @param mixed &$dest
			* @param mixed $source
			* @param bool $force
			* @return mixed
			*/
			function wfSetVar( &$dest, $source, $force = false ) {
			$temp = $dest;
			if ( $source !== null \|\| $force ) {
			$dest = $source;
			}
			return $temp;
			}

			/**
			* As for wfSetVar except setting a bit
			*
			* @param int &$dest
			* @param int $bit
			* @param bool $state
			*
			* @return bool
			*/
			function wfSetBit( &$dest, $bit, $state = true ) {
			$temp = (bool)( $dest & $bit );
			if ( $state !== null ) {
			if ( $state ) {
			$dest \|= $bit;
			} else {
			$dest &= ~$bit;
			}
			}
			return $temp;
			}

			/**
			* A wrapper around the PHP function var_export().
			* Either print it or add it to the regular output ($wgOut).
			*
			* @param mixed $var A PHP variable to dump.
			*/
			function wfVarDump( $var ) {
			global $wgOut;
			$s = str_replace( "\n", "<br />\n", var_export( $var, true ) . "\n" );
			if ( headers_sent() \|\| !isset( $wgOut ) \|\| !is_object( $wgOut ) ) {
			print $s;
			} else {
			$wgOut->addHTML( $s );
			}
			}

			/**
			* Provide a simple HTTP error.
			*
			* @param int\|string $code
			* @param string $label
			* @param string $desc
			*/
			function wfHttpError( $code, $label, $desc ) {
			global $wgOut;
			HttpStatus::header( $code );
			if ( $wgOut ) {
			$wgOut->disable();
			$wgOut->sendCacheControl();
			}

			\MediaWiki\Request\HeaderCallback::warnIfHeadersSent();
			header( 'Content-type: text/html; charset=utf-8' );
			ob_start();
			print '<!DOCTYPE html>' .
			'<html><head><title>' .
			htmlspecialchars( $label ) .
			'</title></head><body><h1>' .
			htmlspecialchars( $label ) .
			'</h1><p>' .
			nl2br( htmlspecialchars( $desc ) ) .
			"</p></body></html>\n";
			header( 'Content-Length: ' . ob_get_length() );
			ob_end_flush();
			}

			/**
			* Clear away any user-level output buffers, discarding contents.
			*
			* Suitable for 'starting afresh', for instance when streaming
			* relatively large amounts of data without buffering, or wanting to
			* output image files without ob_gzhandler's compression.
			*
			* The optional $resetGzipEncoding parameter controls suppression of
			* the Content-Encoding header sent by ob_gzhandler; by default it
			* is left. This should be used for HTTP 304 responses, where you need to
			* preserve the Content-Encoding header of the real result, but
			* also need to suppress the output of ob_gzhandler to keep to spec
			* and avoid breaking Firefox in rare cases where the headers and
			* body are broken over two packets.
			*
			* Note that some PHP configuration options may add output buffer
			* layers which cannot be removed; these are left in place.
			*
			* @param bool $resetGzipEncoding
			*/
			function wfResetOutputBuffers( $resetGzipEncoding = true ) {
			while ( $status = ob_get_status() ) {
			if ( isset( $status['flags'] ) ) {
			$flags = PHP_OUTPUT_HANDLER_CLEANABLE \| PHP_OUTPUT_HANDLER_REMOVABLE;
			$deleteable = ( $status['flags'] & $flags ) === $flags;
			} elseif ( isset( $status['del'] ) ) {
			$deleteable = $status['del'];
			} else {
			// Guess that any PHP-internal setting can't be removed.
			$deleteable = $status['type'] !== 0; /* PHP_OUTPUT_HANDLER_INTERNAL */
			}
			if ( !$deleteable ) {
			// Give up, and hope the result doesn't break
			// output behavior.
			break;
			}
			if ( $status['name'] === 'MediaWikiIntegrationTestCase::wfResetOutputBuffersBarrier' ) {
			// Unit testing barrier to prevent this function from breaking PHPUnit.
			break;
			}
			if ( !ob_end_clean() ) {
			// Could not remove output buffer handler; abort now
			// to avoid getting in some kind of infinite loop.
			break;
			}
			if ( $resetGzipEncoding && $status['name'] == 'ob_gzhandler' ) {
			// Reset the 'Content-Encoding' field set by this handler
			// so we can start fresh.
			header_remove( 'Content-Encoding' );
			break;
			}
			}
			}

			/**
			* Get a timestamp string in one of various formats
			*
			* @param mixed $outputtype Output format, one of the TS_* constants. Defaults to
			* Unix timestamp.
			* @param mixed $ts A timestamp in any supported format. The
			* function will autodetect which format is supplied and act accordingly. Use 0 or
			* omit to use current time
			* @return string\|false The date in the specified format, or false on error.
			*/
			function wfTimestamp( $outputtype = TS_UNIX, $ts = 0 ) {
			$ret = MWTimestamp::convert( $outputtype, $ts );
			if ( $ret === false ) {
			wfDebug( "wfTimestamp() fed bogus time value: TYPE=$outputtype; VALUE=$ts" );
			}
			return $ret;
			}

			/**
			* Return a formatted timestamp, or null if input is null.
			* For dealing with nullable timestamp columns in the database.
			*
			* @param mixed $outputtype
			* @param mixed\|null $ts
			* @return string\|false\|null Null if called with null, otherwise the result of wfTimestamp()
			*/
			function wfTimestampOrNull( $outputtype = TS_UNIX, $ts = null ) {
			if ( $ts === null ) {
			return null;
			} else {
			return wfTimestamp( $outputtype, $ts );
			}
			}

			/**
			* Convenience function; returns MediaWiki timestamp for the present time.
			*
			* @return string TS_MW timestamp
			*/
			function wfTimestampNow() {
			return MWTimestamp::now( TS_MW );
			}

			/**
			* Tries to get the system directory for temporary files. First
			* $wgTmpDirectory is checked, and then the TMPDIR, TMP, and TEMP
			* environment variables are then checked in sequence, then
			* sys_get_temp_dir(), then upload_tmp_dir from php.ini.
			*
			* NOTE: When possible, use instead the tmpfile() function to create
			* temporary files to avoid race conditions on file creation, etc.
			*
			* @return string
			*/
			function wfTempDir() {
			global $wgTmpDirectory;

			if ( $wgTmpDirectory !== false ) {
			return $wgTmpDirectory;
			}

			return TempFSFile::getUsableTempDirectory();
			}

			/**
			* Make directory, and make all parent directories if they don't exist
			*
			* @param string $dir Full path to directory to create. Callers should make sure this is not a storage path.
			* @param int\|null $mode Chmod value to use, default is $wgDirectoryMode
			* @param string\|null $caller Optional caller param for debugging.
			* @return bool
			*/
			function wfMkdirParents( $dir, $mode = null, $caller = null ) {
			global $wgDirectoryMode;

			if ( FileBackend::isStoragePath( $dir ) ) {
			throw new LogicException( __FUNCTION__ . " given storage path '$dir'." );
			}
			if ( $caller !== null ) {
			wfDebug( "$caller: called wfMkdirParents($dir)" );
			}
			if ( strval( $dir ) === '' ) {
			return true;
			}

			$dir = str_replace( [ '\\', '/' ], DIRECTORY_SEPARATOR, $dir );
			$mode ??= $wgDirectoryMode;

			// Turn off the normal warning, we're doing our own below
			// PHP doesn't include the path in its warning message, so we add our own to aid in diagnosis.
			//
			// Repeat existence check if creation failed so that we silently recover in case of
			// a race condition where another request created it since the first check.
			//
			// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
			$ok = is_dir( $dir ) \|\| @mkdir( $dir, $mode, true ) \|\| is_dir( $dir );
			if ( !$ok ) {
			trigger_error( sprintf( "failed to mkdir \"%s\" mode 0%o", $dir, $mode ), E_USER_WARNING );
			}

			return $ok;
			}

			/**
			* Remove a directory and all its content.
			* Does not hide error.
			* @param string $dir
			*/
			function wfRecursiveRemoveDir( $dir ) {
			// taken from https://www.php.net/manual/en/function.rmdir.php#98622
			if ( is_dir( $dir ) ) {
			$objects = scandir( $dir );
			foreach ( $objects as $object ) {
			if ( $object != "." && $object != ".." ) {
			if ( filetype( $dir . '/' . $object ) == "dir" ) {
			wfRecursiveRemoveDir( $dir . '/' . $object );
			} else {
			unlink( $dir . '/' . $object );
			}
			}
			}
			rmdir( $dir );
			}
			}

			/**
			* @param float\|int $nr The number to format
			* @param int $acc The number of digits after the decimal point, default 2
			* @param bool $round Whether or not to round the value, default true
			* @return string
			*/
			function wfPercent( $nr, int $acc = 2, bool $round = true ) {
			$accForFormat = $acc >= 0 ? $acc : 0;
			$ret = sprintf( "%.{$accForFormat}f", $nr );
			return $round ? round( (float)$ret, $acc ) . '%' : "$ret%";
			}

			/**
			* Safety wrapper around ini_get() for boolean settings.
			* The values returned from ini_get() are pre-normalized for settings
			* set via php.ini or php_flag/php_admin_flag... but not
			* for those set via php_value/php_admin_value.
			*
			* It's fairly common for people to use php_value instead of php_flag,
			* which can leave you with an 'off' setting giving a false positive
			* for code that just takes the ini_get() return value as a boolean.
			*
			* To make things extra interesting, setting via php_value accepts
			* "true" and "yes" as true, but php.ini and php_flag consider them false. :)
			* Unrecognized values go false... again opposite PHP's own coercion
			* from string to bool.
			*
			* Luckily, 'properly' set settings will always come back as '0' or '1',
			* so we only have to worry about them and the 'improper' settings.
			*
			* I frickin' hate PHP... :P
			*
			* @param string $setting
			* @return bool
			*/
			function wfIniGetBool( $setting ) {
			return wfStringToBool( ini_get( $setting ) );
			}

			/**
			* Convert string value to boolean, when the following are interpreted as true:
			* - on
			* - true
			* - yes
			* - Any number, except 0
			* All other strings are interpreted as false.
			*
			* @param string $val
			* @return bool
			* @since 1.31
			*/
			function wfStringToBool( $val ) {
			$val = strtolower( $val );
			// 'on' and 'true' can't have whitespace around them, but '1' can.
			return $val == 'on'
			\|\| $val == 'true'
			\|\| $val == 'yes'
			\|\| preg_match( "/^\s[+-]?0[1-9]/", $val ); // approx C atoi() function
			}

			/**
			* Locale-independent version of escapeshellarg()
			*
			* Originally, this fixed the incorrect use of single quotes on Windows
			* (https://bugs.php.net/bug.php?id=26285) and the locale problems on Linux in
			* PHP 5.2.6+ (https://bugs.php.net/bug.php?id=54391). The second bug is still
			* open as of 2021.
			*
			* @param string\|string[] ...$args strings to escape and glue together,
			* or a single array of strings parameter
			* @return string
			* @deprecated since 1.30 use MediaWiki\Shell\Shell::escape()
			*/
			function wfEscapeShellArg( ...$args ) {
			return Shell::escape( ...$args );
			}

			/**
			* Execute a shell command, with time and memory limits mirrored from the PHP
			* configuration if supported.
			*
			* @param string\|string[] $cmd If string, a properly shell-escaped command line,
			* or an array of unescaped arguments, in which case each value will be escaped
			* Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'"
			* @param null\|mixed &$retval Optional, will receive the program's exit code.
			* (non-zero is usually failure). If there is an error from
			* read, select, or proc_open(), this will be set to -1.
			* @param array $environ Optional environment variables which should be
			* added to the executed command environment.
			* @param array $limits Optional array with limits(filesize, memory, time, walltime)
			* this overwrites the global wgMaxShell* limits.
			* @param array $options Array of options:
			* - duplicateStderr: Set this to true to duplicate stderr to stdout,
			* including errors from limit.sh
			* - profileMethod: By default this function will profile based on the calling
			* method. Set this to a string for an alternative method to profile from
			* @phan-param array{duplicateStderr?:bool,profileMethod?:string} $options
			*
			* @return string Collected stdout as a string
			* @deprecated since 1.30 use class MediaWiki\Shell\Shell
			*/
			function wfShellExec( $cmd, &$retval = null, $environ = [],
			$limits = [], $options = []
			) {
			if ( Shell::isDisabled() ) {
			$retval = 1;
			// Backwards compatibility be upon us...
			return 'Unable to run external programs, proc_open() is disabled.';
			}

			if ( is_array( $cmd ) ) {
			$cmd = Shell::escape( $cmd );
			}

			$includeStderr = isset( $options['duplicateStderr'] ) && $options['duplicateStderr'];
			$profileMethod = $options['profileMethod'] ?? wfGetCaller();

			try {
			$result = Shell::command( [] )
			->unsafeParams( (array)$cmd )
			->environment( $environ )
			->limits( $limits )
			->includeStderr( $includeStderr )
			->profileMethod( $profileMethod )
			// For b/c
			->restrict( Shell::RESTRICT_NONE )
			->execute();
			} catch ( ProcOpenError $ex ) {
			$retval = -1;
			return '';
			}

			$retval = $result->getExitCode();

			return $result->getStdout();
			}

			/**
			* Execute a shell command, returning both stdout and stderr. Convenience
			* function, as all the arguments to wfShellExec can become unwieldy.
			*
			* @note This also includes errors from limit.sh, e.g. if $wgMaxShellFileSize is exceeded.
			* @param string\|string[] $cmd If string, a properly shell-escaped command line,
			* or an array of unescaped arguments, in which case each value will be escaped
			* Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'"
			* @param null\|mixed &$retval Optional, will receive the program's exit code.
			* (non-zero is usually failure)
			* @param array $environ Optional environment variables which should be
			* added to the executed command environment.
			* @param array $limits Optional array with limits(filesize, memory, time, walltime)
			* this overwrites the global wgMaxShell* limits.
			* @return string Collected stdout and stderr as a string
			* @deprecated since 1.30 use class MediaWiki\Shell\Shell
			*/
			function wfShellExecWithStderr( $cmd, &$retval = null, $environ = [], $limits = [] ) {
			return wfShellExec( $cmd, $retval, $environ, $limits,
			[ 'duplicateStderr' => true, 'profileMethod' => wfGetCaller() ] );
			}

			/**
			* Generate a shell-escaped command line string to run a MediaWiki cli script.
			* Note that $parameters should be a flat array and an option with an argument
			* should consist of two consecutive items in the array (do not use "--option value").
			*
			* @deprecated since 1.31, use Shell::makeScriptCommand()
			*
			* @param string $script MediaWiki cli script path
			* @param array $parameters Arguments and options to the script
			* @param array $options Associative array of options:
			* 'php': The path to the php executable
			* 'wrapper': Path to a PHP wrapper to handle the maintenance script
			* @phan-param array{php?:string,wrapper?:string} $options
			* @return string
			*/
			function wfShellWikiCmd( $script, array $parameters = [], array $options = [] ) {
			global $wgPhpCli;
			// Give site config file a chance to run the script in a wrapper.
			// The caller may likely want to call wfBasename() on $script.
			( new HookRunner( MediaWikiServices::getInstance()->getHookContainer() ) )
			->onWfShellWikiCmd( $script, $parameters, $options );
			$cmd = [ $options['php'] ?? $wgPhpCli ];
			if ( isset( $options['wrapper'] ) ) {
			$cmd[] = $options['wrapper'];
			}
			$cmd[] = $script;
			// Escape each parameter for shell
			return Shell::escape( array_merge( $cmd, $parameters ) );
			}

			/**
			* wfMerge attempts to merge differences between three texts.
			*
			* @param string $old Common base revision
			* @param string $mine The edit we wish to store but which potentially conflicts with another edit
			* which happened since we started editing.
			* @param string $yours The most recent stored revision of the article. Note that "mine" and "yours"
			* might have another meaning depending on the specific use case.
			* @param string\|null &$simplisticMergeAttempt Automatically merged text, with overlapping edits
			* falling back to "my" text.
			* @param string\|null &$mergeLeftovers Optional out parameter containing an "ed" script with the
			* remaining bits of "your" text that could not be merged into $simplisticMergeAttempt.
			* The "ed" file format is documented here:
			* https://www.gnu.org/software/diffutils/manual/html_node/Detailed-ed.html
			* @return bool true for a clean merge and false for failure or a conflict.
			*/
			function wfMerge(
			string $old,
			string $mine,
			string $yours,
			?string &$simplisticMergeAttempt,
			string &$mergeLeftovers = null
			): bool {
			global $wgDiff3;

			# This check may also protect against code injection in
			# case of broken installations.
			AtEase::suppressWarnings();
			$haveDiff3 = $wgDiff3 && file_exists( $wgDiff3 );
			AtEase::restoreWarnings();

			if ( !$haveDiff3 ) {
			wfDebug( "diff3 not found" );
			return false;
			}

			# Make temporary files
			$td = wfTempDir();
			$oldtextFile = fopen( $oldtextName = tempnam( $td, 'merge-old-' ), 'w' );
			$mytextFile = fopen( $mytextName = tempnam( $td, 'merge-mine-' ), 'w' );
			$yourtextFile = fopen( $yourtextName = tempnam( $td, 'merge-your-' ), 'w' );

			# NOTE: diff3 issues a warning to stderr if any of the files does not end with
			# a newline character. To avoid this, we normalize the trailing whitespace before
			# creating the diff.

			fwrite( $oldtextFile, rtrim( $old ) . "\n" );
			fclose( $oldtextFile );
			fwrite( $mytextFile, rtrim( $mine ) . "\n" );
			fclose( $mytextFile );
			fwrite( $yourtextFile, rtrim( $yours ) . "\n" );
			fclose( $yourtextFile );

			# Check for a conflict
			$cmd = Shell::escape( $wgDiff3, '--text', '--overlap-only', $mytextName,
			$oldtextName, $yourtextName );
			$handle = popen( $cmd, 'r' );

			$mergeLeftovers = '';
			do {
			$data = fread( $handle, 8192 );
			if ( strlen( $data ) == 0 ) {
			break;
			}
			$mergeLeftovers .= $data;
			} while ( true );
			pclose( $handle );

			$conflict = $mergeLeftovers !== '';

			# Merge differences automatically where possible, preferring "my" text for conflicts.
			$cmd = Shell::escape( $wgDiff3, '--text', '--ed', '--merge', $mytextName,
			$oldtextName, $yourtextName );
			$handle = popen( $cmd, 'r' );
			$simplisticMergeAttempt = '';
			do {
			$data = fread( $handle, 8192 );
			if ( strlen( $data ) == 0 ) {
			break;
			}
			$simplisticMergeAttempt .= $data;
			} while ( true );
			pclose( $handle );
			unlink( $mytextName );
			unlink( $oldtextName );
			unlink( $yourtextName );

			if ( $simplisticMergeAttempt === '' && $old !== '' && !$conflict ) {
			wfDebug( "Unexpected null result from diff3. Command: $cmd" );
			$conflict = true;
			}
			return !$conflict;
			}

			/**
			* Return the final portion of a pathname.
			* Reimplemented because PHP5's "basename()" is buggy with multibyte text.
			* https://bugs.php.net/bug.php?id=33898
			*
			* PHP's basename() only considers '\' a pathchar on Windows and Netware.
			* We'll consider it so always, as we don't want '\s' in our Unix paths either.
			*
			* @param string $path
			* @param string $suffix String to remove if present
			* @return string
			*/
			function wfBaseName( $path, $suffix = '' ) {
			if ( $suffix == '' ) {
			$encSuffix = '';
			} else {
			$encSuffix = '(?:' . preg_quote( $suffix, '#' ) . ')?';
			}

			$matches = [];
			if ( preg_match( "#([^/\\\\]?){$encSuffix}[/\\\\]$#", $path, $matches ) ) {
			return $matches[1];
			} else {
			return '';
			}
			}

			/**
			* Generate a relative path name to the given file.
			* May explode on non-matching case-insensitive paths,
			* funky symlinks, etc.
			*
			* @param string $path Absolute destination path including target filename
			* @param string $from Absolute source path, directory only
			* @return string
			*/
			function wfRelativePath( $path, $from ) {
			// Normalize mixed input on Windows...
			$path = str_replace( '/', DIRECTORY_SEPARATOR, $path );
			$from = str_replace( '/', DIRECTORY_SEPARATOR, $from );

			// Trim trailing slashes -- fix for drive root
			$path = rtrim( $path, DIRECTORY_SEPARATOR );
			$from = rtrim( $from, DIRECTORY_SEPARATOR );

			$pieces = explode( DIRECTORY_SEPARATOR, dirname( $path ) );
			$against = explode( DIRECTORY_SEPARATOR, $from );

			if ( $pieces[0] !== $against[0] ) {
			// Non-matching Windows drive letters?
			// Return a full path.
			return $path;
			}

			// Trim off common prefix
			while ( count( $pieces ) && count( $against )
			&& $pieces[0] == $against[0] ) {
			array_shift( $pieces );
			array_shift( $against );
			}

			// relative dots to bump us to the parent
			while ( count( $against ) ) {
			array_unshift( $pieces, '..' );
			array_shift( $against );
			}

			$pieces[] = wfBaseName( $path );

			return implode( DIRECTORY_SEPARATOR, $pieces );
			}

			/**
			* Get a Database object.
			*
			* @param int $db Index of the connection to get. May be DB_PRIMARY for the
			* primary (for write queries), DB_REPLICA for potentially lagged read
			* queries, or an integer >= 0 for a particular server.
			*
			* @param string\|string[] $groups Query groups. An array of group names that this query
			* belongs to. May contain a single string if the query is only
			* in one group.
			*
			* @param string\|false $wiki The wiki ID, or false for the current wiki
			*
			* Note: multiple calls to wfGetDB(DB_REPLICA) during the course of one request
			* will always return the same object, unless the underlying connection or load
			* balancer is manually destroyed.
			*
			* Note 2: use $this->getDB() in maintenance scripts that may be invoked by
			* updater to ensure that a proper database is being updated.
			*
			* Note 3: When replacing calls to this with calls to methods on an injected
			* LoadBalancer, LoadBalancer::getConnection is more commonly needed than
			* LoadBalancer::getMaintenanceConnectionRef, which is needed for more advanced
			* administrative tasks. See the IMaintainableDatabase and IDatabase interfaces
			* for details.
			*
			* @deprecated since 1.39, emitting warnings since 1.42; instead, you can use:
			* $services = MediaWikiServices::getInstance();
			* $dbr = $services->getConnectionProvider()->getReplicaDatabase();
			* $dbw = $services->getConnectionProvider()->getPrimaryDatabase();
			*
			* … or, in rare circumstances, you may need to use:
			*
			* $services->getDBLoadBalancer()->getConnection() / getMaintenanceConnectionRef()
			*
			* @return \Wikimedia\Rdbms\DBConnRef
			*/
			function wfGetDB( $db, $groups = [], $wiki = false ) {
			wfDeprecated( __FUNCTION__, '1.39' );

			if ( $wiki === false ) {
			return MediaWikiServices::getInstance()
			->getDBLoadBalancer()
			->getMaintenanceConnectionRef( $db, $groups, $wiki );
			} else {
			return MediaWikiServices::getInstance()
			->getDBLoadBalancerFactory()
			->getMainLB( $wiki )
			->getMaintenanceConnectionRef( $db, $groups, $wiki );
			}
			}

			/**
			* Get the URL path to a MediaWiki entry point.
			*
			* This is a wrapper to respect $wgScript and $wgLoadScript overrides.
			*
			* @see MW_ENTRY_POINT
			* @param string $script Name of entrypoint, without `.php` extension.
			* @return string
			*/
			function wfScript( $script = 'index' ) {
			global $wgScriptPath, $wgScript, $wgLoadScript;
			if ( $script === 'index' ) {
			return $wgScript;
			} elseif ( $script === 'load' ) {
			return $wgLoadScript;
			} else {
			return "{$wgScriptPath}/{$script}.php";
			}
			}

			/**
			* Convenience function converts boolean values into "true"
			* or "false" (string) values
			*
			* @param bool $value
			* @return string
			*/
			function wfBoolToStr( $value ) {
			return $value ? 'true' : 'false';
			}

			/**
			* Get a platform-independent path to the null file, e.g. /dev/null
			*
			* @return string
			*/
			function wfGetNull() {
			return wfIsWindows() ? 'NUL' : '/dev/null';
			}

			/**
			* Replace all invalid characters with '-'.
			* Additional characters can be defined in $wgIllegalFileChars (see T22489).
			* By default, $wgIllegalFileChars includes ':', '/', '\'.
			*
			* @param string $name Filename to process
			* @return string
			*/
			function wfStripIllegalFilenameChars( $name ) {
			global $wgIllegalFileChars;
			$illegalFileChars = $wgIllegalFileChars ? "\|[" . $wgIllegalFileChars . "]" : '';
			$name = preg_replace(
			"/[^" . Title::legalChars() . "]" . $illegalFileChars . "/",
			'-',
			$name
			);
			// $wgIllegalFileChars may not include '/' and '\', so we still need to do this
			$name = wfBaseName( $name );
			return $name;
			}

			/**
			* Raise PHP's memory limit (if needed).
			*
			* @internal For use by Setup.php
			* @param int $newLimit
			*/
			function wfMemoryLimit( $newLimit ) {
			$oldLimit = wfShorthandToInteger( ini_get( 'memory_limit' ) );
			// If the INI config is already unlimited, there is nothing larger
			if ( $oldLimit != -1 ) {
			$newLimit = wfShorthandToInteger( (string)$newLimit );
			if ( $newLimit == -1 ) {
			wfDebug( "Removing PHP's memory limit" );
			AtEase::suppressWarnings();
			ini_set( 'memory_limit', $newLimit );
			AtEase::restoreWarnings();
			} elseif ( $newLimit > $oldLimit ) {
			wfDebug( "Raising PHP's memory limit to $newLimit bytes" );
			AtEase::suppressWarnings();
			ini_set( 'memory_limit', $newLimit );
			AtEase::restoreWarnings();
			}
			}
			}

			/**
			* Raise the request time limit to $wgTransactionalTimeLimit
			*
			* @return int Prior time limit
			* @since 1.26
			*/
			function wfTransactionalTimeLimit() {
			global $wgTransactionalTimeLimit;

			$timeout = RequestTimeout::singleton();
			$timeLimit = $timeout->getWallTimeLimit();
			if ( $timeLimit !== INF ) {
			// RequestTimeout library is active
			if ( $wgTransactionalTimeLimit > $timeLimit ) {
			$timeout->setWallTimeLimit( $wgTransactionalTimeLimit );
			}
			} else {
			// Fallback case, likely $wgRequestTimeLimit === null
			$timeLimit = (int)ini_get( 'max_execution_time' );
			// Note that CLI scripts use 0
			if ( $timeLimit > 0 && $wgTransactionalTimeLimit > $timeLimit ) {
			$timeout->setWallTimeLimit( $wgTransactionalTimeLimit );
			}
			}
			ignore_user_abort( true ); // ignore client disconnects

			return $timeLimit;
			}

			/**
			* Converts shorthand byte notation to integer form
			*
			* @param null\|string $string
			* @param int $default Returned if $string is empty
			* @return int
			*/
			function wfShorthandToInteger( ?string $string = '', int $default = -1 ): int {
			$string = trim( $string ?? '' );
			if ( $string === '' ) {
			return $default;
			}
			$last = $string[strlen( $string ) - 1];
			$val = intval( $string );
			switch ( $last ) {
			case 'g':
			case 'G':
			$val *= 1024;
			// break intentionally missing
			case 'm':
			case 'M':
			$val *= 1024;
			// break intentionally missing
			case 'k':
			case 'K':
			$val *= 1024;
			}

			return $val;
			}

			/**
			* Wrapper around php's unpack.
			*
			* @param string $format The format string (See php's docs)
			* @param string $data A binary string of binary data
			* @param int\|bool $length The minimum length of $data or false. This is to
			* prevent reading beyond the end of $data. false to disable the check.
			*
			* Also be careful when using this function to read unsigned 32 bit integer
			* because php might make it negative.
			*
			* @throws MWException If $data not long enough, or if unpack fails
			* @return array Associative array of the extracted data
			* @deprecated since 1.42 Use StringUtils::unpack instead
			*/
			function wfUnpack( $format, $data, $length = false ) {
			wfDeprecated( __FUNCTION__, '1.42' );
			try {
			return StringUtils::unpack( (string)$format, (string)$data, $length );
			} catch ( UnpackFailedException $e ) {
			throw new MWException( $e->getMessage(), 0, $e );
			}
			}

			/**
			* Determine input string is represents as infinity
			*
			* @param string $str The string to determine
			* @return bool
			* @since 1.25
			*/
			function wfIsInfinity( $str ) {
			// The INFINITY_VALS are hardcoded elsewhere in MediaWiki (e.g. mediawiki.special.block.js).
			return in_array( $str, ExpiryDef::INFINITY_VALS );
			}

			/**
			* Returns true if these thumbnail parameters match one that MediaWiki
			* requests from file description pages and/or parser output.
			*
			* $params is considered non-standard if they involve a non-standard
			* width or any non-default parameters aside from width and page number.
			* The number of possible files with standard parameters is far less than
			* that of all combinations; rate-limiting for them can thus be more generous.
			*
			* @param File $file
			* @param array $params
			* @return bool
			* @since 1.24 Moved from thumb.php to GlobalFunctions in 1.25
			*/
			function wfThumbIsStandard( File $file, array $params ) {
			global $wgThumbLimits, $wgImageLimits, $wgResponsiveImages;

			$multipliers = [ 1 ];
			if ( $wgResponsiveImages ) {
			// These available sizes are hardcoded currently elsewhere in MediaWiki.
			// @see Linker::processResponsiveImages
			$multipliers[] = 1.5;
			$multipliers[] = 2;
			}

			$handler = $file->getHandler();
			if ( !$handler \|\| !isset( $params['width'] ) ) {
			return false;
			}

			$basicParams = [];
			if ( isset( $params['page'] ) ) {
			$basicParams['page'] = $params['page'];
			}

			$thumbLimits = [];
			$imageLimits = [];
			// Expand limits to account for multipliers
			foreach ( $multipliers as $multiplier ) {
			$thumbLimits = array_merge( $thumbLimits, array_map(
			static function ( $width ) use ( $multiplier ) {
			return round( $width * $multiplier );
			}, $wgThumbLimits )
			);
			$imageLimits = array_merge( $imageLimits, array_map(
			static function ( $pair ) use ( $multiplier ) {
			return [
			round( $pair[0] * $multiplier ),
			round( $pair[1] * $multiplier ),
			];
			}, $wgImageLimits )
			);
			}

			// Check if the width matches one of $wgThumbLimits
			if ( in_array( $params['width'], $thumbLimits ) ) {
			$normalParams = $basicParams + [ 'width' => $params['width'] ];
			// Append any default values to the map (e.g. "lossy", "lossless", ...)
			$handler->normaliseParams( $file, $normalParams );
			} else {
			// If not, then check if the width matches one of $wgImageLimits
			$match = false;
			foreach ( $imageLimits as $pair ) {
			$normalParams = $basicParams + [ 'width' => $pair[0], 'height' => $pair[1] ];
			// Decide whether the thumbnail should be scaled on width or height.
			// Also append any default values to the map (e.g. "lossy", "lossless", ...)
			$handler->normaliseParams( $file, $normalParams );
			// Check if this standard thumbnail size maps to the given width
			if ( $normalParams['width'] == $params['width'] ) {
			$match = true;
			break;
			}
			}
			if ( !$match ) {
			return false; // not standard for description pages
			}
			}

			// Check that the given values for non-page, non-width, params are just defaults
			foreach ( $params as $key => $value ) {
			if ( !isset( $normalParams[$key] ) \|\| $normalParams[$key] != $value ) {
			return false;
			}
			}

			return true;
			}

			/**
			* Merges two (possibly) 2 dimensional arrays into the target array ($baseArray).
			*
			* Values that exist in both values will be combined with += (all values of the array
			* of $newValues will be added to the values of the array of $baseArray, while values,
			* that exists in both, the value of $baseArray will be used).
			*
			* @param array $baseArray The array where you want to add the values of $newValues to
			* @param array $newValues An array with new values
			* @return array The combined array
			* @since 1.26
			*/
			function wfArrayPlus2d( array $baseArray, array $newValues ) {
			// First merge items that are in both arrays
			foreach ( $baseArray as $name => &$groupVal ) {
			if ( isset( $newValues[$name] ) ) {
			$groupVal += $newValues[$name];
			}
			}
			// Now add items that didn't exist yet
			$baseArray += $newValues;

			return $baseArray;
			}

mediawiki/includes/GlobalFunctions.php1d66c7fcd0d2master

GlobalFunctions.phpView Options

mediawiki/includes/GlobalFunctions.php
1d66c7fcd0d2master

GlobalFunctions.php
View Options