import Foundation

let urlStr = "http://somelink.com/somePHP.PHP?variable1=10&variable2=20"
let components = NSURLComponents(string: urlStr)

components?.queryITems?.First?.name   // Optional("variable1")
components?.queryItems?.first?.value  // Optional("10")

您可能会发现为查询项添加下标运算符很有帮助：

extension NSURLComponents {
    subscript(queryItemName: String) -> String? {
        // of course,if you do this a lot,// cache it in a dictionary instead
        for item in self.queryItems ?? [] {
            if item.name == queryItemName {
                return item.value
            }
        }
        return nil
    }
}

if let components = NSURLComponents(string: urlStr) {
    components["variable1"] ?? "No value"
}