develop a php script that extract certain text from a website and output it in xml format

Hello everyone, as described in the title, i want a php script that can extract certain text from a website and save the output to an xml file. Let's say i want to get infos from this webpage [login to view URL] the required informations are : 1- the author name "after it says Narrated" e.g : Narrated Aisha => Aisha is the author name. 2- the text under the author name (just the english text) 3- extract the whole page authors and texts related to each author and put them in xml file structured similar to this one here : [login to view URL] 4- the "book" tag in the xml file should represent the title of the page