iOS: get response from PHP -

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i post , data to/from mysql database php. want response string.

for example:

a user wants login in app. before storing data , proceed i'll have check if username/password pair exists in database.

@ibaction func login(sender: anyobject) {     let request = nsmutableurlrequest(url: nsurl(string: "http://example.com/checklogin.php")!)     request.httpmethod = "post"     let poststring = "username=\(username.text!)&password=\(password.text!)"     request.httpbody = poststring.datausingencoding(nsutf8stringencoding) }

this post username , password checklogin.php file:

    <?php     $root = realpath($_server["document_root"]);     include "$root/config.php";      $username = $_post['username'];     $password = $_post['password'];      $statement = $pdo->prepare("select * contact username = :username , password = :password");     $statement->execute(array('username' => $username, 'password' => $password));      $row = $statement->rowcount();      if ($row == 1) { /*      send "true" xcode! */     }     else { /*      send "false" xcode! */     }

this check if username/password pair exists.

i want "true" or "false" response in ios. if it's true user gets signed in. if it's "false" user gets alert check login data.

what common way send/get , handle responses this? common way achieve this?

you can not return data app directly there several ways send data app : simple way :

use on php echo true or false , 

if ($row == 1) {  echo "true"; } else {   echo "false"; }

add response in swift app , check if it's true or false if statement:

let task = nsurlsession.sharedsession().datataskwithrequest(request) { data, response, error in     guard error == nil && data != nil else {                                                          // check fundamental networking error         print("error=\(error)")         return     }      if let httpstatus = response as? nshttpurlresponse httpstatus.statuscode != 200 {           // check http errors         print("statuscode should 200, \(httpstatus.statuscode)")         print("response = \(response)")     }      let responsestring = nsstring(data: data!, encoding: nsutf8stringencoding)     print("responsestring = \(responsestring)") } task.resume()

note: aware it's not way simple way said it's example...

if want more data server use json


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