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-nmm8
wcf version: 1.0.11 pl 1 (Horizon)
date: Sat, 29 Jun 2024 06:53:31 +0000
request: /wbb3/wbb/index.php?form=Search&searchID=599155&highlight=&s=64da766055b09dcfbaf1b42e21d896d310d3e29b
referer: http://community-of-darkness.com/wbb3/wbb/index.php?form=Search&s=a1c07f79de1b40bfb4a348755f6bc7f4df2d2f41&userID=602

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(SearchForm), 'SearchForm', 'readParameters')
#7 /www/htdocs/v080184/wbb3/wcf/lib/system/event/EventHandler.class.php(142): EventHandler::executeInheritedActions(Object(SearchForm), 'readParameters', 'SearchForm', 'readParameters@...')
#8 /www/htdocs/v080184/wbb3/wcf/lib/page/AbstractPage.class.php(44): EventHandler::fireAction(Object(SearchForm), 'readParameters')
#9 /www/htdocs/v080184/wbb3/wcf/lib/form/CaptchaForm.class.php(23): AbstractPage->readParameters()
#10 /www/htdocs/v080184/wbb3/wcf/lib/form/SearchForm.class.php(47): CaptchaForm->readParameters()
#11 /www/htdocs/v080184/wbb3/wcf/lib/page/AbstractPage.class.php(35): SearchForm->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(94): RequestHandler->__construct('Search', Array, 'form')
#14 /www/htdocs/v080184/wbb3/wbb/index.php(8): RequestHandler::handle(Array)
#15 {main}