Este dalsie obmedzenie moze byt v samotnej server aplikacii (v nejakych jej nastaveniach)
http://www.php.net/manual/en/info.configuration.ph p#ini.max-execution-time
Your web server can have other timeout configurations that may also interrupt PHP execution. Apache has a Timeout directive and IIS has a CGI timeout function. Both default to 300 seconds. See your web server documentation for specific details