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Multiple uri's

I am using a form to submit filter parameters. There are multiple filters that can be selected, and some filters are multi-selects.

The form is posted, and data is returned. However, I would prefer to use the post-redirect-view method, which means that I have to translate the post data to uri segments.

With this in mind, I was going to use the $this->uri->uri_to_assoc(n) method. However, I am not sure how to get this working if some of the parameters can have multiple values.

The only method I can think of is to join the values for each key with a unique character (say '--'), use $this->uri->uri_to_assoc(n) to parse each key-value pair, and then explode() each of the values (on '--') again.

Any other ideas?

Another problem: how do you get over the issue that one of the values may have a forward slash ('/') in the name?

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