sys_debug sys_debug - 1 year ago 62
Objective-C Question

post data to PHP script from iOS

I am trying the following code that executes after user enter data in fields (title, desc, city) and then clicks save.

- (IBAction)saveDataAction:(id)sender {
NSString *lEventTitle = [NSString stringWithFormat:@"var=%@",eventTitle.text];
NSString *lEventDesc = [NSString stringWithFormat:@"var=%@",eventDescription.text];
NSString *lEventCity = [NSString stringWithFormat:@"var=%@",eventCity.text];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@""]];
[request setHTTPMethod:@"POST"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"content-type"];
//this is hard coded based on your suggested values, obviously you'd probably need to make this more dynamic based on your application's specific data to send

NSString *postString = [[NSString alloc] initWithFormat:@"title=%@&description=%@&city=%@", lEventTitle, lEventDesc, lEventCity];
NSString *clearPost = [postString
stringByReplacingOccurrencesOfString:@"var=" withString:@""];
NSLog(@"%@", clearPost);
[request setHTTPBody:[clearPost dataUsingEncoding:NSUTF8StringEncoding]];
[request setValue:clearPost forHTTPHeaderField:@"Content-Length"];
[NSURLConnection connectionWithRequest:request delegate:self];
NSLog(@"%@", request);

When I NSLog the clearPost string (string containing the variables to be sent to server), it shows:


on the PHP end, I have simple as:

$title = $_POST['title'];
$description = $_POST['description'];
$city = $_POST['city'];

echo "Title: ". $title;
echo "Description: ". $description;
echo "City: ". $city;

Just trying to get data on PHP so that later I can manipulate it. Right now when I execute the, it shows the title, description and city empty.

Sorry but I am very new to iOS and Objective-C.

Answer Source

Objective C

// Create your request string with parameter name as defined in PHP file
NSString *myRequestString = [NSString stringWithFormat:@"title=%@&description=%@&city=%@",eventTitle.text,eventDescription.text,eventCity.text];

// Create Data from request
NSData *myRequestData = [NSData dataWithBytes: [myRequestString UTF8String] length: [myRequestString length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL: [NSURL URLWithString: @""]];
// set Request Type
[request setHTTPMethod: @"POST"];
// Set content-type
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"content-type"];
// Set Request Body
[request setHTTPBody: myRequestData];
// Now send a request and get Response
NSData *returnData = [NSURLConnection sendSynchronousRequest: request returningResponse: nil error: nil];
// Log Response
NSString *response = [[NSString alloc] initWithBytes:[returnData bytes] length:[returnData length] encoding:NSUTF8StringEncoding];


// Create your request string with parameter name as defined in PHP file
var myRequestString: String = "title=\(eventTitle.text!)&description=\(eventDescription.text!)&city=\(eventCity.text!)"
// Create Data from request
var myRequestData: NSData = NSData.dataWithBytes(myRequestString.UTF8String(), length: myRequestString.characters.count)
var request: NSMutableURLRequest = NSMutableURLRequest(URL: NSURL(string: "")!)
// set Request Type
request.HTTPMethod = "POST"
// Set content-type
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "content-type")
// Set Request Body
request.HTTPBody = myRequestData
// Now send a request and get Response
var returnData: NSData = NSURLConnection.sendSynchronousRequest(request, returningResponse: nil, error: nil)
// Log Response
var response: String = String(bytes: returnData.bytes(), length: returnData.characters.count, encoding: NSUTF8StringEncoding)
NSLog("%@", response)