includes/Defines.php - mediawiki/core - Gitiles

 <?php
 /**
  * A few constants that might be needed during LocalSettings.php.
  *
  * @license GPL-2.0-or-later
  * @file
  */

 require_once __DIR__ . '/libs/mime/defines.php';
 require_once __DIR__ . '/libs/rdbms/defines.php';

 use Wikimedia\Rdbms\IDatabase;

 /**
  * The running version of MediaWiki.
  *
  * This replaces the $wgVersion global found in earlier versions. When updating
  * the XX part of 1.XX.YY, please remember to also bump the stand-alone duplicate
  * of this in PHPVersionCheck.
  *
  * @since 1.35 (also backported to 1.33.3 and 1.34.1)
  */
 define( 'MW_VERSION', '1.45.0-alpha' );

 /** @{
  * Obsolete IDatabase::makeList() constants
  * These are also available as Database class constants
  */
 define( 'LIST_COMMA', IDatabase::LIST_COMMA );
 define( 'LIST_AND', IDatabase::LIST_AND );
 define( 'LIST_SET', IDatabase::LIST_SET );
 define( 'LIST_NAMES', IDatabase::LIST_NAMES );
 define( 'LIST_OR', IDatabase::LIST_OR );
 /** @} */

 /** @{
  * Virtual namespaces; don't appear in the page database
  */
 define( 'NS_MEDIA', -2 );
 define( 'NS_SPECIAL', -1 );
 /** @} */

 /** @{
  * Real namespaces
  *
  * Number 100 and beyond are reserved for custom namespaces;
  * DO NOT assign standard namespaces at 100 or beyond.
  * DO NOT Change integer values as they are most probably hardcoded everywhere
  * see T2696 which talked about that.
  */
 define( 'NS_MAIN', 0 );
 define( 'NS_TALK', 1 );
 define( 'NS_USER', 2 );
 define( 'NS_USER_TALK', 3 );
 define( 'NS_PROJECT', 4 );
 define( 'NS_PROJECT_TALK', 5 );
 define( 'NS_FILE', 6 );
 define( 'NS_FILE_TALK', 7 );
 define( 'NS_MEDIAWIKI', 8 );
 define( 'NS_MEDIAWIKI_TALK', 9 );
 define( 'NS_TEMPLATE', 10 );
 define( 'NS_TEMPLATE_TALK', 11 );
 define( 'NS_HELP', 12 );
 define( 'NS_HELP_TALK', 13 );
 define( 'NS_CATEGORY', 14 );
 define( 'NS_CATEGORY_TALK', 15 );
 /** @} */

 /** @{
  * Cache type
  */
 define( 'CACHE_ANYTHING', -1 ); // Use anything, as long as it works
 define( 'CACHE_NONE', 0 ); // Do not cache
 define( 'CACHE_DB', 1 ); // Store cache objects in the DB
 define( 'CACHE_MEMCACHED', 'memcached-php' ); // Backwards-compatability alias for Memcached
 define( 'CACHE_ACCEL', 3 ); // APC or APCu
 define( 'CACHE_HASH', 'hash' ); // A HashBagOStuff, mostly useful for testing. Not configurable
 /** @} */

 /** @{
  * Antivirus result codes, for use in $wgAntivirusSetup.
  */
 define( 'AV_NO_VIRUS', 0 );  # scan ok, no virus found
 define( 'AV_VIRUS_FOUND', 1 );  # virus found!
 define( 'AV_SCAN_ABORTED', -1 );  # scan aborted, the file is probably immune
 define( 'AV_SCAN_FAILED', false );  # scan failed (scanner not found or error in scanner)
 /** @} */

 /** @{
  * Date format selectors; used in user preference storage and by
  * Language::date() and co.
  */
 define( 'MW_DATE_DEFAULT', 'default' );
 define( 'MW_DATE_MDY', 'mdy' );
 define( 'MW_DATE_DMY', 'dmy' );
 define( 'MW_DATE_YMD', 'ymd' );
 define( 'MW_DATE_ISO', 'ISO 8601' );
 /** @} */

 /** @{
  * RecentChange type identifiers
  */
 define( 'RC_EDIT', 0 );
 define( 'RC_NEW', 1 );
 define( 'RC_LOG', 3 );
 define( 'RC_EXTERNAL', 5 );
 define( 'RC_CATEGORIZE', 6 );
 /** @} */

 /** @{
  * Article edit flags
  */
 /** Article is assumed to be non-existent, fail if it exists. */
 define( 'EDIT_NEW', 1 );

 /** Article is assumed to be pre-existing, fail if it doesn't exist. */
 define( 'EDIT_UPDATE', 2 );

 /** Mark this edit minor, if the user is allowed to do so */
 define( 'EDIT_MINOR', 4 );

 /** Do not notify other users (e.g. via RecentChanges or watchlist) */
 define( 'EDIT_SILENT', 8 );

 /** @deprecated since 1.44, use EDIT_SILENT instead */
 define( 'EDIT_SUPPRESS_RC', EDIT_SILENT );

 /** Mark the edit a "bot" edit regardless of user rights */
 define( 'EDIT_FORCE_BOT', 16 );

 /** @deprecated since 1.27, updates are always deferred */
 define( 'EDIT_DEFER_UPDATES', 32 );

 /** Fill in blank summaries with generated text where possible */
 define( 'EDIT_AUTOSUMMARY', 64 );

 /** Signal that the page retrieve/save cycle happened entirely in this request. */
 define( 'EDIT_INTERNAL', 128 );

 /** The edit is a side effect and does not represent an active user contribution. */
 define( 'EDIT_IMPLICIT', 256 );
 /** @} */

 /** @{
  * Hook support constants
  */
 define( 'MW_SUPPORTS_PARSERFIRSTCALLINIT', 1 );
 define( 'MW_SUPPORTS_LOCALISATIONCACHE', 1 );
 define( 'MW_SUPPORTS_CONTENTHANDLER', 1 );
 define( 'MW_EDITFILTERMERGED_SUPPORTS_API', 1 );
 /** @} */

 /** Support for $wgResourceModules */
 define( 'MW_SUPPORTS_RESOURCE_MODULES', 1 );

 /**
  * Indicate that the Interwiki extension should not be loaded (it is now
  * in core).
  */
 define( 'MW_HAS_SPECIAL_INTERWIKI', 1 );

 /** @{
  * Allowed values for Parser::$mOutputType
  * Parameter to Parser::startExternalParse().
  * Use of Parser consts is preferred:
  * - Parser::OT_HTML
  * - Parser::OT_WIKI
  * - Parser::OT_PREPROCESS
  * - Parser::OT_PLAIN
  */
 define( 'OT_HTML', 1 );
 define( 'OT_WIKI', 2 );
 define( 'OT_PREPROCESS', 3 );
 define( 'OT_PLAIN', 4 );
 /** @} */

 /** @{
  * Flags for Parser::setFunctionHook
  * Use of Parser consts is preferred:
  * - Parser::SFH_NO_HASH
  * - Parser::SFH_OBJECT_ARGS
  */
 define( 'SFH_NO_HASH', 1 );
 define( 'SFH_OBJECT_ARGS', 2 );
 /** @} */

 /** @{
  * Autopromote conditions
  */
 define( 'APCOND_EDITCOUNT', 1 );
 define( 'APCOND_AGE', 2 );
 define( 'APCOND_EMAILCONFIRMED', 3 );
 define( 'APCOND_INGROUPS', 4 );
 define( 'APCOND_ISIP', 5 );
 define( 'APCOND_IPINRANGE', 6 );
 define( 'APCOND_AGE_FROM_EDIT', 7 );
 define( 'APCOND_BLOCKED', 8 );
 define( 'APCOND_ISBOT', 9 );
 /** @} */

 /** @{
  * Conditional user defaults conditions
  *
  * Strings are used to make the values easier to use in extension.json
  * @since 1.42
  */
 define( 'CUDCOND_AFTER', 'registered-after' );
 define( 'CUDCOND_ANON', 'anonymous-user' );
 define( 'CUDCOND_NAMED', 'named-user' );
 define( 'CUDCOND_USERGROUP', 'usergroup' );
 /** @} */

 /** @{
  * Protocol constants for UrlUtils::expand()
  * PROTO_FALLBACK is @since 1.39
  */
 define( 'PROTO_HTTP', 'http://' );
 define( 'PROTO_HTTPS', 'https://' );
 define( 'PROTO_RELATIVE', '//' );
 define( 'PROTO_FALLBACK', null );
 // Legacy alias for PROTO_FALLBACK from when the current request's protocol was always the fallback
 define( 'PROTO_CURRENT', PROTO_FALLBACK );
 define( 'PROTO_CANONICAL', 1 );
 define( 'PROTO_INTERNAL', 2 );
 /** @} */

 /** @{
  * Content model ids, used by Content and ContentHandler.
  * These IDs will be exposed in the API and XML dumps.
  *
  * Extensions that define their own content model IDs should take
  * care to avoid conflicts. Using the extension name as a prefix is recommended,
  * for example 'myextension-somecontent'.
  */
 define( 'CONTENT_MODEL_WIKITEXT', 'wikitext' );
 define( 'CONTENT_MODEL_JAVASCRIPT', 'javascript' );
 define( 'CONTENT_MODEL_CSS', 'css' );
 define( 'CONTENT_MODEL_TEXT', 'text' );
 define( 'CONTENT_MODEL_JSON', 'json' );
 /** @since 1.45 */
 define( 'CONTENT_MODEL_VUE', 'vue' );
 define( 'CONTENT_MODEL_UNKNOWN', 'unknown' );
 /** @} */

 /** @{
  * Content formats, used by Content and ContentHandler.
  * These should be MIME types, and will be exposed in the API and XML dumps.
  *
  * Extensions are free to use the below formats, or define their own.
  * It is recommended to stick with the conventions for MIME types.
  */
 /** Wikitext */
 define( 'CONTENT_FORMAT_WIKITEXT', 'text/x-wiki' );
 /** For JS pages */
 define( 'CONTENT_FORMAT_JAVASCRIPT', 'text/javascript' );
 /** For CSS pages */
 define( 'CONTENT_FORMAT_CSS', 'text/css' );
 /** For Vue pages */
 define( 'CONTENT_FORMAT_VUE', 'application/vue+xml' );
 /** For future use, e.g. with some plain HTML messages. */
 define( 'CONTENT_FORMAT_TEXT', 'text/plain' );
 /** For future use, e.g. with some plain HTML messages. */
 define( 'CONTENT_FORMAT_HTML', 'text/html' );
 /** For future use with the API and for extensions */
 define( 'CONTENT_FORMAT_SERIALIZED', 'application/vnd.php.serialized' );
 /** For future use with the API, and for use by extensions */
 define( 'CONTENT_FORMAT_JSON', 'application/json' );
 /** For future use with the API, and for use by extensions */
 define( 'CONTENT_FORMAT_XML', 'application/xml' );
 /** @} */

 /** @{
  * Max string length for shell invocations; based on binfmts.h
  */
 define( 'SHELL_MAX_ARG_STRLEN', '100000' );
 /** @} */

 /** @{
  * Schema compatibility flags.
  *
  * Used as flags in a bit field that indicates whether the old or new schema (or both)
  * are read or written.
  *
  * - SCHEMA_COMPAT_WRITE_OLD: Whether information is written to the old schema.
  * - SCHEMA_COMPAT_READ_OLD: Whether information stored in the old schema is read.
  * - SCHEMA_COMPAT_WRITE_TEMP: Whether information is written to a temporary
  *   intermediate schema.
  * - SCHEMA_COMPAT_READ_TEMP: Whether information is read from the temporary
  *   intermediate schema.
  * - SCHEMA_COMPAT_WRITE_NEW: Whether information is written to the new schema
  * - SCHEMA_COMPAT_READ_NEW: Whether information is read from the new schema
  */
 define( 'SCHEMA_COMPAT_WRITE_OLD', 0x01 );
 define( 'SCHEMA_COMPAT_READ_OLD', 0x02 );
 define( 'SCHEMA_COMPAT_WRITE_TEMP', 0x10 );
 define( 'SCHEMA_COMPAT_READ_TEMP', 0x20 );
 define( 'SCHEMA_COMPAT_WRITE_NEW', 0x100 );
 define( 'SCHEMA_COMPAT_READ_NEW', 0x200 );
 define( 'SCHEMA_COMPAT_WRITE_MASK',
 	SCHEMA_COMPAT_WRITE_OLD | SCHEMA_COMPAT_WRITE_TEMP | SCHEMA_COMPAT_WRITE_NEW );
 define( 'SCHEMA_COMPAT_READ_MASK',
 	SCHEMA_COMPAT_READ_OLD | SCHEMA_COMPAT_READ_TEMP | SCHEMA_COMPAT_READ_NEW );
 define( 'SCHEMA_COMPAT_WRITE_BOTH', SCHEMA_COMPAT_WRITE_OLD | SCHEMA_COMPAT_WRITE_NEW );
 define( 'SCHEMA_COMPAT_WRITE_OLD_AND_TEMP', SCHEMA_COMPAT_WRITE_OLD | SCHEMA_COMPAT_WRITE_TEMP );
 define( 'SCHEMA_COMPAT_WRITE_TEMP_AND_NEW', SCHEMA_COMPAT_WRITE_TEMP | SCHEMA_COMPAT_WRITE_NEW );
 define( 'SCHEMA_COMPAT_READ_BOTH', SCHEMA_COMPAT_READ_OLD | SCHEMA_COMPAT_READ_NEW );
 define( 'SCHEMA_COMPAT_OLD', SCHEMA_COMPAT_WRITE_OLD | SCHEMA_COMPAT_READ_OLD );
 define( 'SCHEMA_COMPAT_TEMP', SCHEMA_COMPAT_WRITE_TEMP | SCHEMA_COMPAT_READ_TEMP );
 define( 'SCHEMA_COMPAT_NEW', SCHEMA_COMPAT_WRITE_NEW | SCHEMA_COMPAT_READ_NEW );
 /** @} */

 /** @{
  * Schema change migration flags.
  *
  * Used as values of a feature flag for an orderly transition from an old
  * schema to a new schema. The numeric values of these constants are compatible with the
  * SCHEMA_COMPAT_XXX bitfield semantics. High bits are used to ensure that the numeric
  * ordering follows the order in which the migration stages should be used.
  *
  * Do not use these constants to query the feature flag.  If you wish to check if your
  * code should perform a particular kind of read or write operation, use the appropriate
  * SCHEMA_COMPAT_XXX flag.  It is generally an error to use MIGRATION_XXX constants in a bitwise operation.
  *
  * - MIGRATION_OLD: Only read and write the old schema. The new schema need not
  *   even exist. This is used from when the patch is merged until the schema
  *   change is actually applied to the database.
  * - MIGRATION_WRITE_BOTH: Write both the old and new schema. Read the new
  *   schema preferentially, falling back to the old. This is used while the
  *   change is being tested, allowing easy roll-back to the old schema.
  * - MIGRATION_WRITE_NEW: Write only the new schema. Read the new schema
  *   preferentially, falling back to the old. This is used while running the
  *   maintenance script to migrate existing entries in the old schema to the
  *   new schema.
  * - MIGRATION_NEW: Only read and write the new schema. The old schema (and the
  *   feature flag) may now be removed.
  */
 define( 'MIGRATION_OLD', 0x00000000 | SCHEMA_COMPAT_OLD );
 define( 'MIGRATION_WRITE_BOTH', 0x10000000 | SCHEMA_COMPAT_READ_BOTH | SCHEMA_COMPAT_WRITE_BOTH );
 define( 'MIGRATION_WRITE_NEW', 0x20000000 | SCHEMA_COMPAT_READ_BOTH | SCHEMA_COMPAT_WRITE_NEW );
 define( 'MIGRATION_NEW', 0x30000000 | SCHEMA_COMPAT_NEW );
 /** @} */

 /** @{
  * XML dump schema versions, for use with XmlDumpWriter.
  * See also the corresponding export-nnnn.xsd files in the docs directory,
  * which are also listed at <https://www.mediawiki.org/xml/>.
  * Note that not all old schema versions are represented here, as several
  * were already unsupported at the time these constants were introduced.
  */
 define( 'XML_DUMP_SCHEMA_VERSION_10', '0.10' );
 define( 'XML_DUMP_SCHEMA_VERSION_11', '0.11' );
 /** @} */
	<?php
	/**
	* A few constants that might be needed during LocalSettings.php.
	*
	* @license GPL-2.0-or-later
	* @file
	*/

	require_once __DIR__ . '/libs/mime/defines.php';
	require_once __DIR__ . '/libs/rdbms/defines.php';

	use Wikimedia\Rdbms\IDatabase;

	/**
	* The running version of MediaWiki.
	*
	* This replaces the $wgVersion global found in earlier versions. When updating
	* the XX part of 1.XX.YY, please remember to also bump the stand-alone duplicate
	* of this in PHPVersionCheck.
	*
	* @since 1.35 (also backported to 1.33.3 and 1.34.1)
	*/
	define( 'MW_VERSION', '1.45.0-alpha' );

	/** @{
	* Obsolete IDatabase::makeList() constants
	* These are also available as Database class constants
	*/
	define( 'LIST_COMMA', IDatabase::LIST_COMMA );
	define( 'LIST_AND', IDatabase::LIST_AND );
	define( 'LIST_SET', IDatabase::LIST_SET );
	define( 'LIST_NAMES', IDatabase::LIST_NAMES );
	define( 'LIST_OR', IDatabase::LIST_OR );
	/** @} */

	/** @{
	* Virtual namespaces; don't appear in the page database
	*/
	define( 'NS_MEDIA', -2 );
	define( 'NS_SPECIAL', -1 );
	/** @} */

	/** @{
	* Real namespaces
	*
	* Number 100 and beyond are reserved for custom namespaces;
	* DO NOT assign standard namespaces at 100 or beyond.
	* DO NOT Change integer values as they are most probably hardcoded everywhere
	* see T2696 which talked about that.
	*/
	define( 'NS_MAIN', 0 );
	define( 'NS_TALK', 1 );
	define( 'NS_USER', 2 );
	define( 'NS_USER_TALK', 3 );
	define( 'NS_PROJECT', 4 );
	define( 'NS_PROJECT_TALK', 5 );
	define( 'NS_FILE', 6 );
	define( 'NS_FILE_TALK', 7 );
	define( 'NS_MEDIAWIKI', 8 );
	define( 'NS_MEDIAWIKI_TALK', 9 );
	define( 'NS_TEMPLATE', 10 );
	define( 'NS_TEMPLATE_TALK', 11 );
	define( 'NS_HELP', 12 );
	define( 'NS_HELP_TALK', 13 );
	define( 'NS_CATEGORY', 14 );
	define( 'NS_CATEGORY_TALK', 15 );
	/** @} */

	/** @{
	* Cache type
	*/
	define( 'CACHE_ANYTHING', -1 ); // Use anything, as long as it works
	define( 'CACHE_NONE', 0 ); // Do not cache
	define( 'CACHE_DB', 1 ); // Store cache objects in the DB
	define( 'CACHE_MEMCACHED', 'memcached-php' ); // Backwards-compatability alias for Memcached
	define( 'CACHE_ACCEL', 3 ); // APC or APCu
	define( 'CACHE_HASH', 'hash' ); // A HashBagOStuff, mostly useful for testing. Not configurable
	/** @} */

	/** @{
	* Antivirus result codes, for use in $wgAntivirusSetup.
	*/
	define( 'AV_NO_VIRUS', 0 ); # scan ok, no virus found
	define( 'AV_VIRUS_FOUND', 1 ); # virus found!
	define( 'AV_SCAN_ABORTED', -1 ); # scan aborted, the file is probably immune
	define( 'AV_SCAN_FAILED', false ); # scan failed (scanner not found or error in scanner)
	/** @} */

	/** @{
	* Date format selectors; used in user preference storage and by
	* Language::date() and co.
	*/
	define( 'MW_DATE_DEFAULT', 'default' );
	define( 'MW_DATE_MDY', 'mdy' );
	define( 'MW_DATE_DMY', 'dmy' );
	define( 'MW_DATE_YMD', 'ymd' );
	define( 'MW_DATE_ISO', 'ISO 8601' );
	/** @} */

	/** @{
	* RecentChange type identifiers
	*/
	define( 'RC_EDIT', 0 );
	define( 'RC_NEW', 1 );
	define( 'RC_LOG', 3 );
	define( 'RC_EXTERNAL', 5 );
	define( 'RC_CATEGORIZE', 6 );
	/** @} */

	/** @{
	* Article edit flags
	*/
	/** Article is assumed to be non-existent, fail if it exists. */
	define( 'EDIT_NEW', 1 );

	/** Article is assumed to be pre-existing, fail if it doesn't exist. */
	define( 'EDIT_UPDATE', 2 );

	/** Mark this edit minor, if the user is allowed to do so */
	define( 'EDIT_MINOR', 4 );

	/** Do not notify other users (e.g. via RecentChanges or watchlist) */
	define( 'EDIT_SILENT', 8 );

	/** @deprecated since 1.44, use EDIT_SILENT instead */
	define( 'EDIT_SUPPRESS_RC', EDIT_SILENT );

	/** Mark the edit a "bot" edit regardless of user rights */
	define( 'EDIT_FORCE_BOT', 16 );

	/** @deprecated since 1.27, updates are always deferred */
	define( 'EDIT_DEFER_UPDATES', 32 );

	/** Fill in blank summaries with generated text where possible */
	define( 'EDIT_AUTOSUMMARY', 64 );

	/** Signal that the page retrieve/save cycle happened entirely in this request. */
	define( 'EDIT_INTERNAL', 128 );

	/** The edit is a side effect and does not represent an active user contribution. */
	define( 'EDIT_IMPLICIT', 256 );
	/** @} */

	/** @{
	* Hook support constants
	*/
	define( 'MW_SUPPORTS_PARSERFIRSTCALLINIT', 1 );
	define( 'MW_SUPPORTS_LOCALISATIONCACHE', 1 );
	define( 'MW_SUPPORTS_CONTENTHANDLER', 1 );
	define( 'MW_EDITFILTERMERGED_SUPPORTS_API', 1 );
	/** @} */

	/** Support for $wgResourceModules */
	define( 'MW_SUPPORTS_RESOURCE_MODULES', 1 );

	/**
	* Indicate that the Interwiki extension should not be loaded (it is now
	* in core).
	*/
	define( 'MW_HAS_SPECIAL_INTERWIKI', 1 );

	/** @{
	* Allowed values for Parser::$mOutputType
	* Parameter to Parser::startExternalParse().
	* Use of Parser consts is preferred:
	* - Parser::OT_HTML
	* - Parser::OT_WIKI
	* - Parser::OT_PREPROCESS
	* - Parser::OT_PLAIN
	*/
	define( 'OT_HTML', 1 );
	define( 'OT_WIKI', 2 );
	define( 'OT_PREPROCESS', 3 );
	define( 'OT_PLAIN', 4 );
	/** @} */

	/** @{
	* Flags for Parser::setFunctionHook
	* Use of Parser consts is preferred:
	* - Parser::SFH_NO_HASH
	* - Parser::SFH_OBJECT_ARGS
	*/
	define( 'SFH_NO_HASH', 1 );
	define( 'SFH_OBJECT_ARGS', 2 );
	/** @} */

	/** @{
	* Autopromote conditions
	*/
	define( 'APCOND_EDITCOUNT', 1 );
	define( 'APCOND_AGE', 2 );
	define( 'APCOND_EMAILCONFIRMED', 3 );
	define( 'APCOND_INGROUPS', 4 );
	define( 'APCOND_ISIP', 5 );
	define( 'APCOND_IPINRANGE', 6 );
	define( 'APCOND_AGE_FROM_EDIT', 7 );
	define( 'APCOND_BLOCKED', 8 );
	define( 'APCOND_ISBOT', 9 );
	/** @} */

	/** @{
	* Conditional user defaults conditions
	*
	* Strings are used to make the values easier to use in extension.json
	* @since 1.42
	*/
	define( 'CUDCOND_AFTER', 'registered-after' );
	define( 'CUDCOND_ANON', 'anonymous-user' );
	define( 'CUDCOND_NAMED', 'named-user' );
	define( 'CUDCOND_USERGROUP', 'usergroup' );
	/** @} */

	/** @{
	* Protocol constants for UrlUtils::expand()
	* PROTO_FALLBACK is @since 1.39
	*/
	define( 'PROTO_HTTP', 'http://' );
	define( 'PROTO_HTTPS', 'https://' );
	define( 'PROTO_RELATIVE', '//' );
	define( 'PROTO_FALLBACK', null );
	// Legacy alias for PROTO_FALLBACK from when the current request's protocol was always the fallback
	define( 'PROTO_CURRENT', PROTO_FALLBACK );
	define( 'PROTO_CANONICAL', 1 );
	define( 'PROTO_INTERNAL', 2 );
	/** @} */

	/** @{
	* Content model ids, used by Content and ContentHandler.
	* These IDs will be exposed in the API and XML dumps.
	*
	* Extensions that define their own content model IDs should take
	* care to avoid conflicts. Using the extension name as a prefix is recommended,
	* for example 'myextension-somecontent'.
	*/
	define( 'CONTENT_MODEL_WIKITEXT', 'wikitext' );
	define( 'CONTENT_MODEL_JAVASCRIPT', 'javascript' );
	define( 'CONTENT_MODEL_CSS', 'css' );
	define( 'CONTENT_MODEL_TEXT', 'text' );
	define( 'CONTENT_MODEL_JSON', 'json' );
	/** @since 1.45 */
	define( 'CONTENT_MODEL_VUE', 'vue' );
	define( 'CONTENT_MODEL_UNKNOWN', 'unknown' );
	/** @} */

	/** @{
	* Content formats, used by Content and ContentHandler.
	* These should be MIME types, and will be exposed in the API and XML dumps.
	*
	* Extensions are free to use the below formats, or define their own.
	* It is recommended to stick with the conventions for MIME types.
	*/
	/** Wikitext */
	define( 'CONTENT_FORMAT_WIKITEXT', 'text/x-wiki' );
	/** For JS pages */
	define( 'CONTENT_FORMAT_JAVASCRIPT', 'text/javascript' );
	/** For CSS pages */
	define( 'CONTENT_FORMAT_CSS', 'text/css' );
	/** For Vue pages */
	define( 'CONTENT_FORMAT_VUE', 'application/vue+xml' );
	/** For future use, e.g. with some plain HTML messages. */
	define( 'CONTENT_FORMAT_TEXT', 'text/plain' );
	/** For future use, e.g. with some plain HTML messages. */
	define( 'CONTENT_FORMAT_HTML', 'text/html' );
	/** For future use with the API and for extensions */
	define( 'CONTENT_FORMAT_SERIALIZED', 'application/vnd.php.serialized' );
	/** For future use with the API, and for use by extensions */
	define( 'CONTENT_FORMAT_JSON', 'application/json' );
	/** For future use with the API, and for use by extensions */
	define( 'CONTENT_FORMAT_XML', 'application/xml' );
	/** @} */

	/** @{
	* Max string length for shell invocations; based on binfmts.h
	*/
	define( 'SHELL_MAX_ARG_STRLEN', '100000' );
	/** @} */

	/** @{
	* Schema compatibility flags.
	*
	* Used as flags in a bit field that indicates whether the old or new schema (or both)
	* are read or written.
	*
	* - SCHEMA_COMPAT_WRITE_OLD: Whether information is written to the old schema.
	* - SCHEMA_COMPAT_READ_OLD: Whether information stored in the old schema is read.
	* - SCHEMA_COMPAT_WRITE_TEMP: Whether information is written to a temporary
	* intermediate schema.
	* - SCHEMA_COMPAT_READ_TEMP: Whether information is read from the temporary
	* intermediate schema.
	* - SCHEMA_COMPAT_WRITE_NEW: Whether information is written to the new schema
	* - SCHEMA_COMPAT_READ_NEW: Whether information is read from the new schema
	*/
	define( 'SCHEMA_COMPAT_WRITE_OLD', 0x01 );
	define( 'SCHEMA_COMPAT_READ_OLD', 0x02 );
	define( 'SCHEMA_COMPAT_WRITE_TEMP', 0x10 );
	define( 'SCHEMA_COMPAT_READ_TEMP', 0x20 );
	define( 'SCHEMA_COMPAT_WRITE_NEW', 0x100 );
	define( 'SCHEMA_COMPAT_READ_NEW', 0x200 );
	define( 'SCHEMA_COMPAT_WRITE_MASK',
	SCHEMA_COMPAT_WRITE_OLD \| SCHEMA_COMPAT_WRITE_TEMP \| SCHEMA_COMPAT_WRITE_NEW );
	define( 'SCHEMA_COMPAT_READ_MASK',
	SCHEMA_COMPAT_READ_OLD \| SCHEMA_COMPAT_READ_TEMP \| SCHEMA_COMPAT_READ_NEW );
	define( 'SCHEMA_COMPAT_WRITE_BOTH', SCHEMA_COMPAT_WRITE_OLD \| SCHEMA_COMPAT_WRITE_NEW );
	define( 'SCHEMA_COMPAT_WRITE_OLD_AND_TEMP', SCHEMA_COMPAT_WRITE_OLD \| SCHEMA_COMPAT_WRITE_TEMP );
	define( 'SCHEMA_COMPAT_WRITE_TEMP_AND_NEW', SCHEMA_COMPAT_WRITE_TEMP \| SCHEMA_COMPAT_WRITE_NEW );
	define( 'SCHEMA_COMPAT_READ_BOTH', SCHEMA_COMPAT_READ_OLD \| SCHEMA_COMPAT_READ_NEW );
	define( 'SCHEMA_COMPAT_OLD', SCHEMA_COMPAT_WRITE_OLD \| SCHEMA_COMPAT_READ_OLD );
	define( 'SCHEMA_COMPAT_TEMP', SCHEMA_COMPAT_WRITE_TEMP \| SCHEMA_COMPAT_READ_TEMP );
	define( 'SCHEMA_COMPAT_NEW', SCHEMA_COMPAT_WRITE_NEW \| SCHEMA_COMPAT_READ_NEW );
	/** @} */

	/** @{
	* Schema change migration flags.
	*
	* Used as values of a feature flag for an orderly transition from an old
	* schema to a new schema. The numeric values of these constants are compatible with the
	* SCHEMA_COMPAT_XXX bitfield semantics. High bits are used to ensure that the numeric
	* ordering follows the order in which the migration stages should be used.
	*
	* Do not use these constants to query the feature flag. If you wish to check if your
	* code should perform a particular kind of read or write operation, use the appropriate
	* SCHEMA_COMPAT_XXX flag. It is generally an error to use MIGRATION_XXX constants in a bitwise operation.
	*
	* - MIGRATION_OLD: Only read and write the old schema. The new schema need not
	* even exist. This is used from when the patch is merged until the schema
	* change is actually applied to the database.
	* - MIGRATION_WRITE_BOTH: Write both the old and new schema. Read the new
	* schema preferentially, falling back to the old. This is used while the
	* change is being tested, allowing easy roll-back to the old schema.
	* - MIGRATION_WRITE_NEW: Write only the new schema. Read the new schema
	* preferentially, falling back to the old. This is used while running the
	* maintenance script to migrate existing entries in the old schema to the
	* new schema.
	* - MIGRATION_NEW: Only read and write the new schema. The old schema (and the
	* feature flag) may now be removed.
	*/
	define( 'MIGRATION_OLD', 0x00000000 \| SCHEMA_COMPAT_OLD );
	define( 'MIGRATION_WRITE_BOTH', 0x10000000 \| SCHEMA_COMPAT_READ_BOTH \| SCHEMA_COMPAT_WRITE_BOTH );
	define( 'MIGRATION_WRITE_NEW', 0x20000000 \| SCHEMA_COMPAT_READ_BOTH \| SCHEMA_COMPAT_WRITE_NEW );
	define( 'MIGRATION_NEW', 0x30000000 \| SCHEMA_COMPAT_NEW );
	/** @} */

	/** @{
	* XML dump schema versions, for use with XmlDumpWriter.
	* See also the corresponding export-nnnn.xsd files in the docs directory,
	* which are also listed at <https://www.mediawiki.org/xml/>.
	* Note that not all old schema versions are represented here, as several
	* were already unsupported at the time these constants were introduced.
	*/
	define( 'XML_DUMP_SCHEMA_VERSION_10', '0.10' );
	define( 'XML_DUMP_SCHEMA_VERSION_11', '0.11' );
	/** @} */