Convert XML feed into JSON

Create a PHP script that can be run as a cronjob to convert an XML feed into JSON format. The JSON structure requires only certain attributes and node values parsed from the XML. Attached XML source should be outputted as: [ "date" : "2014-11-12", "time" : "00:00:00", "show_title" : "Show Title", "episode_title" : "Episode Title", "description" : "Lorem ipsum dolor", "property_code" : "ABC" }, ... Where in the XML: date = <CalendarDt value="01122014"> - note convert format time = <Listing StartTime="00:00:00" show_title = <Title>Lorem </Title> episode_title = <Episode>Lorem </Episode> description = <Description>... </Description> property_code = <Tvchannel value="PLD" This is a straight-forward script and should be costed as a project cost