iPhone to PHP to iPhone

[Danno2717]

Hi, I am trying to create a login system on an iPhone app but am coming across a bit of a problem. I believe that the code I have is sending the the NSString to the PHP but it is not storing and echoing back the strings like I want it to. What am I doing wrong?

I know the php code isn't doing much right now I just want to see that it is storing the values that I send it.

P.S. yeah it's just hard-coded right now so the username and password are a and s

Thanks!

XCode:

NSString *content = @"myusername=a&mypassword=s";

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"http://mywebsite.php"]];
urlRequest = [[[NSMutableURLRequest alloc] init] autorelease];
[urlRequest setHTTPMethod:@"POST"];
[urlRequest setHTTPBody:[content dataUsingEncoding:NSISOLatin1StringEncoding]];


// generates an autoreleased NSURLConnection
[NSURLConnection connectionWithRequest:request delegate:self];

NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(returnString);

}


PHP:

// username and password sent from form
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];

echo "first ". $_POST['myusename']." return";
echo "second ". $_POST['mypassword']." return";

[iSDK]

You are not actually sending the myusername and mypassword variables to the php file.

your URL should be this:

NSString *content = @"myusername=a&mypassword=s";

    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://mywebsite.php%@", content]]];

PS. Please use code tags

[C O D E] & [/C O D E] (remove the spaces).

Originally Posted by Danno2717

Hi, I am trying to create a login system on an iPhone app but am coming across a bit of a problem. I believe that the code I have is sending the the NSString to the PHP but it is not storing and echoing back the strings like I want it to. What am I doing wrong?

I know the php code isn't doing much right now I just want to see that it is storing the values that I send it.

P.S. yeah it's just hard-coded right now so the username and password are a and s

Thanks!

XCode:

NSString *content = @"myusername=a&mypassword=s";

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"http://mywebsite.php"]];
urlRequest = [[[NSMutableURLRequest alloc] init] autorelease];
[urlRequest setHTTPMethod:@"POST"];
[urlRequest setHTTPBody:[content dataUsingEncoding:NSISOLatin1StringEncoding]];


// generates an autoreleased NSURLConnection
[NSURLConnection connectionWithRequest:request delegate:self];

NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(returnString);

}


PHP:

// username and password sent from form
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];

echo "first ". $_POST['myusename']." return";
echo "second ". $_POST['mypassword']." return";

[Speed]

@iSDK, that would be assuming he uses GET with his request and he is using POST.

@OP, I do not believe you are actually setting the POST variables in your request. I think it is something like [request setPostValue... forKey... ];

You are then able to populate your request with POST values and receive the information. An easier way as well would be to do what iSDK suggested and default to a GET request as you can receive your information through the URL.

[MatthewD]

Try setting the content type:

[urlRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];

[franzwarning]

Hi, I recently did the same thing and here is how I got it to work. I would get the string from a UIText Field like this:

NSString *passwordstring=password.text;	NSString *usernamestring=username.text;

After I had the string I would send it up to the server like this:

NSString *url = [ NSString stringWithFormat: @"http://test.com/Login.php?user=%@&pass=%@", usernamestring, passwordstring];
	NSString *escapedURL = [url stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
	NSString *webpage = [NSString stringWithContentsOfURL:[NSURL URLWithString:escapedURL]];

and retrieve a string back (that was echoed from the PHP script) from the server saying "YES" or "NO". If it was "YES", i would go to the next page. Like this:

if([webpage isEqualToString: @"YES"]){
//do the funciton [self presentModalViewetc.....];
}

My php for the login system was a mysql database. I got the username and password in the php script by saying

$username = $_GET['user'];
$password = $_GET['pass'];

The rest you should know, If you have any more questions just ask me.

Cheers,
George