How to generate XML file dynamically using PHP? -

I have to dynamically generate an XML file at runtime, please help me to generate the following XML file dynamically in PHP Please.

  & lt ;? XML version = "1.0" encoding = "UTF-8"? & Gt; & Lt; Xml & gt; & Lt; Track & gt; & Lt; Path & gt; Song1.mp3 & lt; / Path & gt; & Lt; Title & gt; Track 1 - track title & lt; / Title & gt; & Lt; / Track & gt; & Lt; Track & gt; & Lt; Path & gt; Song2.mp3 & lt; / Path & gt; & Lt; Title & gt; Track 2 - track title & lt; / Title & gt; & Lt; / Track & gt; & Lt; Track & gt; & Lt; Path & gt; Song3.mp3 & lt; / Path & gt; & Lt; Title & gt; Track 3 - Track Title & lt; / Title & gt; & Lt; / Track & gt; & Lt; Track & gt; & Lt; Path & gt; Song4.mp3 & lt; / Path & gt; & Lt; Title & gt; Track 4 - Track Title & lt; / Title & gt; & Lt; / Track & gt; & Lt; Track & gt; & Lt; Path & gt; Song5.mp3 & lt; / Path & gt; & Lt; Title & gt; Track 5 - Track Title & lt; / Title & gt; & Lt; / Track & gt; & Lt; Track & gt; & Lt; Path & gt; Song6.mp3 & lt; / Path & gt; & Lt; Title & gt; Track 6 - Track title & lt; / Title & gt; & Lt; / Track & gt; & Lt; Track & gt; & Lt; Path & gt; Song7.mp3 & lt; / Path & gt; & Lt; Title & gt; Track 7 - Track Title & lt; / Title & gt; & Lt; / Track & gt; & Lt; Track & gt; & Lt; Path & gt; Song8.mp3 & lt; / Path & gt; & Lt; Title & gt; Track 8 - Track title & lt; / Title & gt; & Lt; / Track & gt;  

I will use

asXML ());