simplexml - simplexml_load_file vs Third party RSS parsing libraries.(PHP) -

i wish parse rss feed in php. first found various third party libraries same namely: magpie , simplepie.

but since rss files in xml format, php has native functions of simplexml_load_file parse xml file.

so why should 1 required external libraries , not use native function?

using third party lib specialized in reading rss feeds, have methods , properties simplexml has not, because there implemented library.

but if want read simple xml feed, using simplexml sufficient.

magpie example implemented functions cache data, example.