autoload.php

См. документацию.

<?php
 
use Bitrix\Main\Loader;
 
//main is usually included directly
$moduleRoot = realpath(__DIR__ . '/../');
foreach (
    [
        'Bitrix\\Main' => '/lib',
        'Psr\\Container' => '/vendor/psr/container/src',
        'Psr\\Log' => '/vendor/psr/log/src',
        'Psr\\Http\\Message' => '/vendor/psr/http-message/src',
        'Psr\\Http\\Client' => '/vendor/psr/http-client/src',
        'Http\\Promise' => '/vendor/php-http/promise/src',
        'PHPMailer\\PHPMailer' => '/vendor/phpmailer/phpmailer/src',
        'GeoIp2' => '/vendor/geoip2/geoip2/src',
        'MaxMind\\Db' => '/vendor/maxmind-db/reader/src/MaxMind/Db',
        'PhpParser' => '/vendor/nikic/php-parser/lib/PhpParser',
        'Recurr' => '/vendor/simshaun/recurr/src/Recurr',
    ]
    as $namespace => $namespacePath
)
{
    Loader::registerNamespace($namespace, $moduleRoot . $namespacePath);
}
 
$documentRoot = Loader::getDocumentRoot();
Loader::registerNamespace('Bitrix\\UI', $documentRoot . '/bitrix/modules/ui/lib');
 
unset($namespace, $namespacePath);
 
if (is_dir($moduleRoot . '/dev'))
{
    // developer mode
    Loader::registerNamespace('Dev\Main', $moduleRoot . '/dev');
}
 
spl_autoload_register([Loader::class, 'autoLoad']);
 
Loader::registerAutoLoadClasses(
    'main',
    [
        'bitrix\\main\\application' => 'lib/application.php',
        'bitrix\\main\\httpapplication' => 'lib/httpapplication.php',
        'bitrix\\main\\context' => 'lib/context.php',
        'bitrix\\main\\httpcontext' => 'lib/httpcontext.php',
        'bitrix\\main\\event' => 'lib/event.php',
        'bitrix\\main\\eventmanager' => 'lib/eventmanager.php',
        'bitrix\\main\\eventresult' => 'lib/eventresult.php',
        'bitrix\\main\\request' => 'lib/request.php',
        'bitrix\\main\\httprequest' => 'lib/httprequest.php',
        'bitrix\\main\\response' => 'lib/response.php',
        'bitrix\\main\\httpresponse' => 'lib/httpresponse.php',
        'bitrix\\main\\modulemanager' => 'lib/modulemanager.php',
        'bitrix\\main\\server' => 'lib/server.php',
        'bitrix\\main\\config\\configuration' => 'lib/config/configuration.php',
        'bitrix\\main\\config\\option' => 'lib/config/option.php',
        'bitrix\\main\\context\\culture' => 'lib/context/culture.php',
        'bitrix\\main\\data\\cache' => 'lib/data/cache.php',
        'bitrix\\main\\data\\cacheengineapc' => 'lib/data/cacheengineapc.php',
        'bitrix\\main\\data\\cacheenginememcache' => 'lib/data/cacheenginememcache.php',
        'bitrix\\main\\data\\cacheenginefiles' => 'lib/data/cacheenginefiles.php',
        'bitrix\\main\\data\\cacheenginenone' => 'lib/data/cacheenginenone.php',
        'bitrix\\main\\data\\connection' => 'lib/data/connection.php',
        'bitrix\\main\\data\\connectionpool' => 'lib/data/connectionpool.php',
        'bitrix\\main\\data\\managedcache' => 'lib/data/managedcache.php',
        'bitrix\\main\\data\\taggedcache' => 'lib/data/taggedcache.php',
        'bitrix\\main\\data\\memcacheconnection' => 'lib/data/memcacheconnection.php',
        'bitrix\\main\\data\\memcachedconnection' => 'lib/data/memcachedconnection.php',
        'bitrix\\main\\db\\arrayresult' => 'lib/db/arrayresult.php',
        'bitrix\\main\\db\\result' => 'lib/db/result.php',
        'bitrix\\main\\db\\connection' => 'lib/db/connection.php',
        'bitrix\\main\\db\\sqlexpression' => 'lib/db/sqlexpression.php',
        'bitrix\\main\\db\\sqlhelper' => 'lib/db/sqlhelper.php',
        'bitrix\\main\\db\\mysqlcommonconnection' => 'lib/db/mysqlcommonconnection.php',
        'bitrix\\main\\db\\mysqliconnection' => 'lib/db/mysqliconnection.php',
        'bitrix\\main\\db\\mysqliresult' => 'lib/db/mysqliresult.php',
        'bitrix\\main\\db\\mysqlisqlhelper' => 'lib/db/mysqlisqlhelper.php',
        'bitrix\\main\\db\\pgsqlconnection' => 'lib/db/pgsqlconnection.php',
        'bitrix\\main\\diag\\exceptionhandler' => 'lib/diag/exceptionhandler.php',
        'bitrix\\main\\io\\file' => 'lib/io/file.php',
        'bitrix\\main\\io\\fileentry' => 'lib/io/fileentry.php',
        'bitrix\\main\\io\\path' => 'lib/io/path.php',
        'bitrix\\main\\io\\filesystementry' => 'lib/io/filesystementry.php',
        'bitrix\\main\\io\\ifilestream' => 'lib/io/ifilestream.php',
        'bitrix\\main\\localization\\loc' => 'lib/localization/loc.php',
        'bitrix\\main\\type\\collection' => 'lib/type/collection.php',
        'bitrix\\main\\type\\date' => 'lib/type/date.php',
        'bitrix\\main\\type\\datetime' => 'lib/type/datetime.php',
        'bitrix\\main\\type\\dictionary' => 'lib/type/dictionary.php',
        'bitrix\\main\\type\\parameterdictionary' => 'lib/type/parameterdictionary.php',
        'bitrix\\main\\web\\cookie' => 'lib/web/cookie.php',
        'bitrix\\main\\web\\uri' => 'lib/web/uri.php',
        'bitrix\\main\\sendereventhandler' => 'lib/senderconnector.php',
        'bitrix\\main\\senderconnectoruser' => 'lib/senderconnector.php',
        'bitrix\\main\\composite\\abstractresponse' => 'lib/composite/responder.php',
        'bitrix\\main\\composite\\fileresponse' => 'lib/composite/responder.php',
        'bitrix\\main\\composite\\memcachedresponse' => 'lib/composite/responder.php',
        'CTimeZone' => 'classes/general/time.php',
        'CBXPunycode' => 'classes/general/punycode.php',
        'IBXVirtualIO' => 'classes/general/virtual_io.php',
        'IBXGetErrors' => 'classes/general/virtual_io.php',
        'CBXVirtualIo' => 'classes/general/virtual_io.php',
        'CBXVirtualFileBase' => 'classes/general/virtual_file.php',
        'CBXVirtualFile' => 'classes/general/virtual_file.php',
        'CBXVirtualDirectory' => 'classes/general/virtual_file.php',
        'CAllOption' => 'classes/general/option.php',
        'COption' => 'classes/general/option.php',
        'CAllPageOption' => 'classes/general/pageoption.php',
        'CPageOption' => 'classes/general/pageoption.php',
        'CAllSQLWhere' => 'classes/general/sqlwhere.php',
        'CSQLWhereExpression' => 'classes/general/sqlwhere.php',
        'CSQLWhere' => 'classes/general/sqlwhere.php',
        'CAllLanguage' => 'classes/general/language.php',
        'CLanguage' => 'classes/general/language.php',
        'CLangAdmin' => 'classes/general/language.php',
        '_CLangDBResult' => 'classes/general/langdbresult.php',
        'CAllAgent' => 'classes/general/agent.php',
        'CAgent' => 'classes/general/agent.php',
        'CApplicationException' => 'classes/general/applicationexception.php',
        'CAdminException' => 'classes/general/adminexception.php',
        'CAllSite' => 'classes/general/site.php',
        'CAllLang' => 'classes/general/site.php',
        'CSite' => 'classes/general/site.php',
        'CLang' => 'classes/general/site.php',
        'CHTTP' => 'classes/general/http.php',
        'CUtil' => 'classes/general/util.php',
        'CAllMain' => 'classes/general/main.php',
        'CMain' => 'classes/general/main.php',
        'CAllDatabase' => 'classes/general/database.php',
        'CAllDBResult' => 'classes/general/dbresult.php',
        'CDatabaseMysql' => 'classes/mysql/database.php',
        'CDBResultMysql' => 'classes/mysql/dbresult.php',
        'CPHPCache' => 'classes/general/cache.php',
        'CCacheManager' => 'classes/general/cache_manager.php',
        'CPageCache' => 'classes/general/page_cache.php',
        'CStackCacheEntry' => 'classes/general/stack_cache_entry.php',
        'CStackCacheManager' => 'classes/general/stack_cache.php',
        'CModule' => '/classes/general/module.php',
        'CSiteTemplate' => 'classes/general/site_template.php',
        'CBitrixComponent' => 'classes/general/component.php',
        'CComponentEngine' => 'classes/general/component_engine.php',
        'CComponentAjax' => 'classes/general/component_ajax.php',
        'CBitrixComponentTemplate' => 'classes/general/component_template.php',
        'CComponentUtil' => 'classes/general/component_util.php',
        'CControllerClient' => 'classes/general/controller_member.php',
        'PHPParser' => 'classes/general/php_parser.php',
        'CDiskQuota' => 'classes/general/quota.php',
        'CEventLog' => 'classes/general/event_log.php',
        'CEventMain' => 'classes/general/event_log.php',
        'CAdminFileDialog' => 'classes/general/file_dialog.php',
        'WLL_User' => 'classes/general/liveid.php',
        'WLL_ConsentToken' => 'classes/general/liveid.php',
        'WindowsLiveLogin' => 'classes/general/liveid.php',
        'CFile' => 'classes/general/file.php',
        'CTempFile' => 'classes/general/file_temp.php',
        'CFavorites' => 'classes/general/favorites.php',
        'CBXFavAdmMenu' => 'classes/general/favorites.php',
        'CBXFavUrls' => 'classes/general/favorites.php',
        'CUserOptions' => 'classes/general/user_options.php',
        'CGridOptions' => 'classes/general/grids.php',
        'CUndo' => '/classes/general/undo.php',
        'CAutoSave' => '/classes/general/undo.php',
        'CRatings' => 'classes/general/ratings.php',
        'CRatingsComponentsMain' => 'classes/general/ratings_components.php',
        'CRatingRule' => 'classes/general/rating_rule.php',
        'CRatingRulesMain' => 'classes/general/rating_rules.php',
        'CTopPanel' => 'public/top_panel.php',
        'CEditArea' => 'public/edit_area.php',
        'CComponentPanel' => 'public/edit_area.php',
        'CTextParser' => 'classes/general/textparser.php',
        'CPHPCacheFiles' => 'classes/general/cache_files.php',
        'CDataXMLNode' => 'classes/general/xml.php',
        'CDataXMLDocument' => 'classes/general/xml.php',
        'CDataXML' => 'classes/general/xml.php',
        'CXMLFileStream' => 'classes/general/xml.php',
        'CRsaProvider' => 'classes/general/rsasecurity.php',
        'CRsaSecurity' => 'classes/general/rsasecurity.php',
        'CRsaBcmathProvider' => 'classes/general/rsabcmath.php',
        'CRsaOpensslProvider' => 'classes/general/rsaopenssl.php',
        'CASNReader' => 'classes/general/asn.php',
        'CBXShortUri' => 'classes/general/short_uri.php',
        'CFinder' => 'classes/general/finder.php',
        'CAccess' => 'classes/general/access.php',
        'CAuthProvider' => 'classes/general/authproviders.php',
        'IProviderInterface' => 'classes/general/authproviders.php',
        'CGroupAuthProvider' => 'classes/general/authproviders.php',
        'CUserAuthProvider' => 'classes/general/authproviders.php',
        'CTableSchema' => 'classes/general/table_schema.php',
        'CCSVData' => 'classes/general/csv_data.php',
        'CSmile' => 'classes/general/smile.php',
        'CSmileGallery' => 'classes/general/smile.php',
        'CSmileSet' => 'classes/general/smile.php',
        'CGlobalCounter' => 'classes/general/global_counter.php',
        'CAllUserCounter' => 'classes/general/user_counter.php',
        'CUserCounter' => 'classes/general/user_counter.php',
        'CUserCounterPage' => 'classes/general/user_counter_page.php',
        'CHotKeys' => 'classes/general/hot_keys.php',
        'CHotKeysCode' => 'classes/general/hot_keys.php',
        'CBXSanitizer' => 'classes/general/sanitizer.php',
        'IBXArchive' => 'classes/general/archive.php',
        'CBXArchive' => 'classes/general/archive.php',
        'CAdminNotify' => 'classes/general/admin_notify.php',
        'CAdminInformer' => 'classes/general/admin_informer.php',
        'CSiteCheckerTest' => 'classes/general/site_checker.php',
        'CSqlUtil' => 'classes/general/sql_util.php',
        'CFileUploader' => 'classes/general/uploader.php',
        'LPA' => 'classes/general/lpa.php',
        'CAdminFilter' => 'interface/admin_filter.php',
        'CAdminList' => 'interface/admin_list.php',
        'CAdminListRow' => 'interface/admin_list.php',
        'CAdminUiList' => 'interface/admin_ui_list.php',
        'CAdminUiListRow' => 'interface/admin_ui_list.php',
        'CAdminUiResult' => 'interface/admin_ui_list.php',
        'CAdminUiContextMenu' => 'interface/admin_ui_list.php',
        'CAdminUiSorting' => 'interface/admin_ui_list.php',
        'CAdminUiListActionPanel' => 'interface/admin_ui_list.php',
        'CAdminTabControl' => 'interface/admin_tabcontrol.php',
        'CAdminForm' => 'interface/admin_form.php',
        'CAdminFormSettings' => 'interface/admin_form.php',
        'CAdminTabControlDrag' => 'interface/admin_tabcontrol_drag.php',
        'CAdminDraggableBlockEngine' => 'interface/admin_tabcontrol_drag.php',
        'CJSPopup' => 'interface/jspopup.php',
        'CJSPopupOnPage' => 'interface/jspopup.php',
        'CAdminCalendar' => 'interface/admin_calendar.php',
        'CAdminViewTabControl' => 'interface/admin_viewtabcontrol.php',
        'CAdminTabEngine' => 'interface/admin_tabengine.php',
        'CCaptcha' => 'classes/general/captcha.php',
        'CMpNotifications' => 'classes/general/mp_notifications.php',
        'CAllTask' => 'classes/general/task.php',
        'CTask' => 'classes/general/task.php',
        'CAllOperation' => 'classes/general/operation.php',
        'COperation' => 'classes/general/operation.php',
        'CAllGroup' => 'classes/general/group.php',
        'CGroup' => 'classes/general/group.php',
        'CAjax' => 'ajax_tools.php',
        'CAllUser' => 'classes/general/user.php',
        'CUser' => 'classes/general/user.php',
        'CEvent' => 'classes/general/event.php',
        'CAllEventMessage' => 'classes/general/eventmessage.php',
        'CEventMessage' => 'classes/general/eventmessage.php',
        'CEventType' => 'classes/general/eventmessage.php',
        '_CEventTypeResult' => 'classes/general/eventmessage.php',
        'CDBResultEventMultiResult' => 'classes/general/eventmessage.php',
        'CDebugInfo' => 'classes/general/debuginfo.php',
        'CCaptchaAgent' => 'classes/general/captchaagent.php',
        'CAllFilterQuery' => 'classes/general/filterquery.php',
        'CFilterQuery' => 'classes/general/filterquery.php',
        'CConvertorsPregReplaceHelper' => 'classes/general/convertorspregreplacehelper.php',
        'CSpacer' => 'classes/general/spacer.php',
        'UpdateTools' => 'classes/general/updatetools.php',
        'CJSCore' => 'classes/general/jscore.php',
        'CCheckListTools' => 'classes/general/checklist.php',
        'CMenu' => 'classes/general/menu.php',
        'CMenuCustom' => 'classes/general/menucustom.php',
        'CAllUserTypeEntity' => 'classes/general/usertype.php',
        'CUserTypeEntity' => 'classes/general/usertype.php',
        'CUserFieldEnum' => 'classes/general/userfieldenum.php',
        'CUserTypeSQL' => 'classes/general/usertypesql.php',
        'CUserTypeManager' => 'classes/general/usertypemanager.php',
        'CUserTypeString' => 'classes/general/usertypestr.php',
        'CUserTypeInteger' => 'classes/general/usertypeint.php',
        'CUserTypeDouble' => 'classes/general/usertypedbl.php',
        'CUserTypeDateTime' => 'classes/general/usertypetime.php',
        'CUserTypeDate' => 'classes/general/usertypedate.php',
        'CUserTypeBoolean' => 'classes/general/usertypebool.php',
        'CUserTypeFile' => 'classes/general/usertypefile.php',
        'CUserTypeEnum' => 'classes/general/usertypeenum.php',
        'CUserTypeIBlockSection' => 'classes/general/usertypesection.php',
        'CIBlockSectionEnum' => 'classes/general/usertypesection.php',
        'CUserTypeIBlockElement' => 'classes/general/usertypeelement.php',
        'CUserTypeStringFormatted' => 'classes/general/usertypestrfmt.php',
        'CUserTypeUrl' => 'classes/general/usertypeurl.php',
        'BXGadget' => 'classes/general/gadget.php',
        'CMainAdmin' => 'classes/general/main_admin.php',
        'CTemplates' => 'classes/general/templates.php',
        'CPageTemplate' => 'classes/general/page_template.php',
        'FilesCmp' => 'classes/general/files_cmp.php',
        'CArchiver' => 'classes/general/tar_gz.php',
        'CZip' => 'classes/general/zip.php',
        'CFileCacheCleaner' => 'classes/general/cache_files_cleaner.php',
        'CFileTree' => 'classes/general/file_tree.php',
        'CDesktopMenu' => 'interface/desktop_menu.php',
        'CAdminTopPanel' => 'interface/top_panel.php',
        'CUpdateClient' => 'classes/general/update_client.php',
        'CUpdateExpertMode' => 'classes/general/update_client.php',
 
        //deprecated
        'CUrlRewriter' => 'classes/general/urlrewriter.php',
        'CharsetConverter' => 'classes/general/charset_converter.php',
        'CHTMLPagesCache' => 'lib/composite/helper.php',
        'StaticHtmlMemcachedResponse' => 'lib/composite/responder.php',
        'StaticHtmlFileResponse' => 'lib/composite/responder.php',
        'Bitrix\\Main\\Page\\Frame' => 'lib/composite/engine.php',
        'Bitrix\\Main\\Page\\FrameStatic' => 'lib/composite/staticarea.php',
        'Bitrix\\Main\\Page\\FrameBuffered' => 'lib/composite/bufferarea.php',
        'Bitrix\\Main\\Page\\FrameHelper' => 'lib/composite/bufferarea.php',
        'Bitrix\\Main\\Data\\StaticHtmlCache' => 'lib/composite/page.php',
        'Bitrix\\Main\\Data\\StaticHtmlStorage' => 'lib/composite/data/abstractstorage.php',
        'Bitrix\\Main\\Data\\StaticHtmlFileStorage' => 'lib/composite/data/filestorage.php',
        'Bitrix\\Main\\Data\\StaticHtmlMemcachedStorage' => 'lib/composite/data/memcachedstorage.php',
        'Bitrix\\Main\\Data\\StaticCacheProvider' => 'lib/composite/data/cacheprovider.php',
        'Bitrix\\Main\\Data\\AppCacheManifest' => 'lib/composite/appcache.php',
    ]
);
 
Loader::registerHandler([\Bitrix\Main\ORM\Loader::class, 'autoLoad']);
 
// old class names compatibility
require_once __DIR__ . '/compatibility.php';
 
// register composer classes
Loader::includeComposerAutoload();