Easily convert between dictionaries and query strings in iOS. The API is similar to NSJSONSerialization.

NSString *queryString = [CMDQueryStringSerialization queryStringWithDictionary:dictionary];

CMDQueryStringSerialization supports arrays encoded in one of the following three formats:

• key=value1&key=value2
• key[]=value1&key[]=value2
• key=value1,value2

The CMDQueryStringArraySerializationOption enum contains options that map to each of these formats, with CMDQueryStringArraySerializationOptionMultipleKeys being the default if no option is passed.

MIT