XML URL creation using Curl and PHP

I'm trying to find an elegant way to generate an XML string that is used to request data from a data provider. The site I'm building has several search boxes that take in information required for different products,

For each of these products I have a xxx_search_model that handles the programming logic for doing this. At the moment I generate the XML files in each model in string form and manually insert the variables directly into the string.

Is it possible to have the XML files in a resources folder, load them in and parse through the file inserting values? If so how would this be best done
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There may be a more XML-centric method, but I think I'd just go with the following idea:

Create your template XML documents, and then insert place-holder tokens that will be replaced by the value of variables at the time of processing. For instance,


and so on. Then load the file into one great big string using file_get_contents ( http://php.net/manual/en/function.file-get-contents.php ) and then use preg_replace statements to swap your place-holder tokens with the variable values.

However, you'd have to make sure that there was nothing in your XML template that resembled any of your place-holder tokens accidentally, otherwise your script may choke.

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gegaboneAuthor Commented:
Perfect, thanks
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