In iOS 5.1, local file storage is no longer available without using CoreData. For some small and temporary project, using php with simple write file function could be a way out.
1. Create a local network with a php server running on 1 of the server.
2. Create a php file in your server that could write a string (e.g. a comma separated string) to a text file stored on the webserver.
3. in your iOS app, use the following lines for read string from the server.
NSString *locationString = [NSString stringWithContentsOfURL:[NSURL URLWithString:@"http://127.0.0.1/~admin/strings/savedString1.txt"] encoding:NSUTF8StringEncoding error:&error];
4. To write a file, simply use the POST method to send a simple string to a relative php page.
The good thing about this method is it is easy to implement, especially for web developer, however it is not a practical way for general app applications. Since we can’t always be sure that the app is being ran with a network/internet connection.