Parsing Large XML file as well as Search records by different values using php

I have to parse a large xml data by a given URL, which I have parsed by simplexml_load_file(); php function, but it takes alot of time, secondly, I also need to select all those records from the parse records when a user using a form to get their required data by quering. For Example: I am having real estate records in given URL of XML, and I also have html form after selecting different fields I need to show only those records which match the given condition selected in the form.

Thank you in advance.