how to get product name and price through rss
i want to make a search on my website which content two fields one for keyword and the other for the city name selection,
now the question i get the product name and product prices againesed the search key word and the city name.without search in the database.

basics steps of my question
1 how to find the rss urls in the selected city
2 then how i read rss and made a search in it.
3 the data must not save in the database
       $feed_url=?
        $content = file_get_contents($feed_url);  
    $x = new SimpleXmlElement($content); 
how to get product name and price through rss
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i want to make a search on my website which content two fields one for keyword and the other for the city name selection,
now the question i get the product name and product prices againesed the search key word and the city name.without search in the database.

basics steps of my question
1 how to find the rss urls in the selected city
2 then how i read rss and made a search in it.
3 the data must not save in the database
       $feed_url=?
        $content = file_get_contents($feed_url);  
    $x = new SimpleXmlElement($content); 