Abort Twitter XML loading in PHP

[soiskibre]

I am loading the Twitter Member XML with the simplexml_load_file() Function.This works fine and i can parse the XML, but sometime it needs alot Time toload the XML or the XML does not load becouse of Twitter. And this is not onlybecouse of the 150 Request Limits from Twitter.Thats why i would like to know if it is possible to abort the Twitter XML Fileloading after 30 Seconds when the loading was not successful until then?Thank You!