php echo remote site URL as link

hi,

I need a help on this I am fetching random jobs from the site using RSS feeds which keeps on updating after few min.
I just need to get the URL of site from which the rss feeds are fetched.

Ex. marketing jobs from monster site shows many jobs related to marketing. I want to get the url like monster.com, or timesjobs.com etc on the site below the job title. please tell me how I can get URL using php code.

thanks

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