The way you describe your problem, won't never work, because it's two complete different devices with no shared memory.
What I recommend you, are by giving you some tutorial to guide you in the right way. I think you should make an API for communication between your website and the device witch want the data.
The first is for creating your own API in PHP:
http://css.dzone.com/articles/create-your-own-xmljsonhtml
The second is for contacting the API in objective-c:
http://www.raywenderlich.com/58682/introduction-restkit-tutorial
And if you want too, here is some swift code I have made
let listData = NSData(contentsOfURL: NSURL(string: "http://yourhost.com/api/categories")!)
let prop = NSPropertyListSerialization.propertyListFromData(listData, mutabilityOption: NSPropertyListMutabilityOptions.allZeros, format: nil, errorDescription: nil) as NSArray // or NSDictionary. NSDictionary are for key value, NSArray are for an Array
Hope that helped you a little for directions.
UPDATE
If you have en webView I just made a quick search on "ios webview pass data", and found this stackoverflow link:
Passing Data To and From an Embedded UIWebView