NSURLConnection with POST doesn't work - ios

Question

I'm trying request a URL parsing parameters with POST, but mypage.php is not receiving this parameters...
Here is my code:
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"http://myurl/mypage.php"]];
NSString *params = [[NSString alloc]initWithFormat:#"name=%#&surname=%#&location=%#&email=%#&password=%#&gender=%#&tipo=%#", name, surname, location, email, password, gender, tipo];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[params dataUsingEncoding:NSUTF8StringEncoding]];
NSLog(params);
NSURLConnection *conn=[[NSURLConnection alloc] initWithRequest:request delegate:self];
if (conn) {
webData = [[NSMutableData data] retain];
}
else
{
}
and mypage.php
if($_POST['name'] != "" && $_POST['email'] != "")
//Here the $_POST['name'] and the $_POST['email'] are empty...

Answer 1

You're not starting the connection. You should do it with a [conn start];

Answer 2

Try this:
NSString *params=[NSString stringWithFormat:#"name=%#&surname=%#&location=%#&email=%#&password=%#&gender=%#&tipo=%#", name, surname, location, email, password, gender, tipo];
NSData *postData=[params dataUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURL URLWithString:#"http://myurl/mypage.php"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
[request addValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
[request setValue:[NSString stringWithFormat:#"%i",postData.length] forHTTPHeaderField:#"Content-Length"];
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
if (data!=nil) {
NSString *output=[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"output: %#", output);
}else{
NSLog(#"data is empty");
}