Fatal error: PHP error in file /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php (402): Function ereg() is deprecated

Information:

error message: PHP error in file /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php (402): Function ereg() is deprecated
error code: 0
file: /www/htdocs/v080184/wbb3/wcf/lib/system/WCF.class.php (255)
php version: 5.6.40-nmm9
wcf version: 1.0.11 pl 1 (Horizon)
date: Thu, 31 Oct 2024 22:56:24 +0000
request: /wbb3/wbb/index.php?page=Thread&postID=138876&s=d0b58f053605f64dd9d8f34844b4645254a7d5ff
referer: http://www.community-of-darkness.com/wbb3/wbb/index.php?action=firstNew&page=Thread&s=851dff30b236dc3ee2761aeea2ad5939d97dee21&threadID=31

Stacktrace:

#0 [internal function]: WCF::handleError(8192, 'Function ereg()...', '/www/htdocs/v08...', 402, Array)
#1 /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php(402): ereg()
#2 /www/htdocs/v080184/wbb3/wcf/lib/system/security/plugins/datatransfer/datatransfer.class.php(17): SecurityHandler->checkReferer()
#3 /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php(188): Datatransfer->execute(Object(SecurityHandler), 'datatransfer')
#4 /www/htdocs/v080184/wbb3/wcf/lib/system/security/SecurityHandler.class.php(67): SecurityHandler->fireActions()
#5 /www/htdocs/v080184/wbb3/wcf/lib/system/event/listener/SecurityListener.class.php(35): SecurityHandler->extendedSystem()
#6 /www/htdocs/v080184/wbb3/wcf/lib/system/event/EventHandler.class.php(117): SecurityListener->execute(Object(ThreadPage), 'ThreadPage', 'readParameters')
#7 /www/htdocs/v080184/wbb3/wcf/lib/system/event/EventHandler.class.php(142): EventHandler::executeInheritedActions(Object(ThreadPage), 'readParameters', 'ThreadPage', 'readParameters@...')
#8 /www/htdocs/v080184/wbb3/wcf/lib/page/AbstractPage.class.php(44): EventHandler::fireAction(Object(ThreadPage), 'readParameters')
#9 /www/htdocs/v080184/wbb3/wcf/lib/page/MultipleLinkPage.class.php(54): AbstractPage->readParameters()
#10 /www/htdocs/v080184/wbb3/wbb/lib/page/ThreadPage.class.php(33): MultipleLinkPage->readParameters()
#11 /www/htdocs/v080184/wbb3/wcf/lib/page/AbstractPage.class.php(35): ThreadPage->readParameters()
#12 /www/htdocs/v080184/wbb3/wcf/lib/util/RequestHandler.class.php(63): AbstractPage->__construct()
#13 /www/htdocs/v080184/wbb3/wcf/lib/util/RequestHandler.class.php(91): RequestHandler->__construct('Thread', Array, 'page')
#14 /www/htdocs/v080184/wbb3/wbb/index.php(8): RequestHandler::handle(Array)
#15 {main}