iOS/iPhone Register Form and Send Data to Web Server (PHP & MySQL)

CREATE TABLE `member` (
`MemberID` int(2) NOT NULL auto_increment,
`Username` varchar(50) NOT NULL,
`Password` varchar(50) NOT NULL,
`Name` varchar(50) NOT NULL,
`Tel` varchar(50) NOT NULL,
`Email` varchar(150) NOT NULL,
PRIMARY KEY (`MemberID`),
UNIQUE KEY `Username` (`Username`),
UNIQUE KEY `Email` (`Email`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=4 ;

-- 
-- Dumping data for table `member`
-- 

INSERT INTO `member` VALUES (1, 'weerachai', 'weerachai@1', 'Weerachai Nukitram', '0819876107', '[email protected]');
INSERT INTO `member` VALUES (2, 'adisorn', 'adisorn@2', 'Adisorn Bunsong', '021978032', '[email protected]');
INSERT INTO `member` VALUES (3, 'surachai', 'surachai@3', 'Surachai Sirisart', '0876543210', '[email protected]');

<?php
	$objConnect = mysql_connect("localhost","root","root");
	$objDB = mysql_select_db("mydatabase");
	
	/*** for Sample 
		$_POST["sUsername"] = "a";
		$_POST["sPassword"] = "b";
		$_POST["sName"] = "c";
		$_POST["sEmail"] = "d";
		$_POST["sTel"] = "e";
	*/

	$strUsername = $_POST["sUsername"];
	$strPassword = $_POST["sPassword"];
	$strName = $_POST["sName"];
	$strEmail = $_POST["sEmail"];
	$strTel = $_POST["sTel"];

	/*** Check Username Exists ***/
	$strSQL = "SELECT * FROM member WHERE Username = '".$strUsername."' ";
	$objQuery = mysql_query($strSQL);
	$objResult = mysql_fetch_array($objQuery);

	$arr = null;

	if($objResult)
	{
		$arr["Status"] = "0";
		$arr["Message"] = "Username Exists!";
		
		echo json_encode($arr);
		exit();
	}

	/*** Check Email Exists ***/
	$strSQL = "SELECT * FROM member WHERE Email = '".$strEmail."' ";
	$objQuery = mysql_query($strSQL);
	$objResult = mysql_fetch_array($objQuery);
	if($objResult)
	{
		$arr["Status"] = "0";
		$arr["Message"] = "Email Exists!";
		
		echo json_encode($arr);
		exit();
	}
	
	/*** Insert ***/
	$strSQL = "INSERT INTO member (Username,Password,Name,Email,Tel) 
		VALUES (
			'".$strUsername."',
			'".$strPassword."',
			'".$strName."',
			'".$strEmail."',
			'".$strTel."'
			)
		";

	$objQuery = mysql_query($strSQL);
	if(!$objQuery)
	{
		$arr["Status"] = "0";
		$arr["Message"] = "Cannot Save Data!";
		
		echo json_encode($arr);
		exit();
	}
	else
	{
		$arr["Status"] = "1";
		$arr["Message"] = "Register Successfully!";

		echo json_encode($arr);
		exit();
	}

	/**
	return

		Status // (0=Failed , 1=Complete)
		Message //  Message
	*/
	
	mysql_close($objConnect);
	
?>

//
//  ViewController.h
//  registerDataToServer
//
//  Created by Weerachai on 12/10/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    
    IBOutlet UITextField *txtUsername;
    
    IBOutlet UITextField *txtPassword;
    
    IBOutlet UITextField *txtName;
    
    IBOutlet UITextField *txtTel;
    
    IBOutlet UITextField *txtEmail;
    
}

- (IBAction)btnSave:(id)sender;

@property(nonatomic,assign) NSMutableData *receivedData;

@end

//
//  ViewController.m
//  registerDataToServer
//
//  Created by Weerachai on 12/10/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()
{
    UIAlertView *loading;
}

@end

@implementation ViewController

@synthesize receivedData;

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    
    // Tap Gesture for Hide Keyboard
    UITapGestureRecognizer *oneTapGesture = [[UITapGestureRecognizer alloc]
                                             initWithTarget: self
                                             action: @selector(hideKeyboard:)];
    [oneTapGesture setNumberOfTouchesRequired:1];
    [[self view] addGestureRecognizer:oneTapGesture];
}

// Event Gesture for Hide Keyboard
- (void)hideKeyboard:(UITapGestureRecognizer *)sender {
    [txtUsername resignFirstResponder];
    [txtPassword resignFirstResponder];
    [txtName resignFirstResponder];
    [txtTel resignFirstResponder];
    [txtEmail resignFirstResponder];
}

- (IBAction)btnSave:(id)sender {

    //sUsername=surapong&sPassword=surapong@4&sName=Surapong Siriphun&[email protected]&sTel=0812345678
    NSMutableString *post = [NSString stringWithFormat:@"sUsername=%@&sPassword=%@&sName=%@&sEmail=%@&sTel=%@",
                             [txtUsername text],[txtPassword text],[txtName text],[txtEmail text],[txtTel text]];
    
    NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
    NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
    
    NSURL *url = [NSURL URLWithString:@"https://www.thaicreate.com/url/registerData.php"];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
                timeoutInterval:10.0];
    [request setHTTPMethod:@"POST"];
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
	[request setHTTPBody:postData];
    
    NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
    
    
    // Show Progress Loading...
    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
    
    loading = [[UIAlertView alloc] initWithTitle:@"" message:@"Please Wait..." delegate:nil cancelButtonTitle:nil otherButtonTitles:nil];
    UIActivityIndicatorView *progress= [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(125, 50, 30, 30)];
    progress.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhiteLarge;
    [loading addSubview:progress];
    [progress startAnimating];
    [progress release];
    [loading show];
    
    if (theConnection) {
        self.receivedData = nil;
    } else {
		UIAlertView *connectFailMessage = [[UIAlertView alloc] initWithTitle:@"NSURLConnection " message:@"Failed in viewDidLoad"  delegate: self cancelButtonTitle:@"Ok" otherButtonTitles: nil];
		[connectFailMessage show];
		[connectFailMessage release];
    }

}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    receivedData = [[NSMutableData alloc] init];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    sleep(2);
    [receivedData appendData:data];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    
    [connection release];
    [receivedData release];
    
    // inform the user
    UIAlertView *didFailWithErrorMessage = [[UIAlertView alloc] initWithTitle: @"NSURLConnection " message: @"didFailWithError"  delegate: self cancelButtonTitle: @"Ok" otherButtonTitles: nil];
    [didFailWithErrorMessage show];
    [didFailWithErrorMessage release];
	
    //inform the user
    NSLog(@"Connection failed! Error - %@", [error localizedDescription]);
    
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    // Hide Progress
    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
    [loading dismissWithClickedButtonIndex:0 animated:YES];
    
    // Return Status E.g : { "Status":"1", "Message":"Register Successfully" }
    // 0 = Error
    // 1 = Completed
    
    if(receivedData)
    {
        //NSLog(@"%@",receivedData);
        
        //NSString *dataString = [[NSString alloc] initWithData:receivedData encoding:NSASCIIStringEncoding];
        //NSLog(@"%@",dataString);
        
        id jsonObjects = [NSJSONSerialization JSONObjectWithData:receivedData options:NSJSONReadingMutableContainers error:nil];
        
        // value in key name
        NSString *strStatus = [jsonObjects objectForKey:@"Status"];
        NSString *strMessage = [jsonObjects objectForKey:@"Message"];
        NSLog(@"Status = %@",strStatus);
        NSLog(@"Message = %@",strMessage);
        
        // Completed
        if( [strStatus isEqualToString:@"1"] ){
            UIAlertView *completed =[[UIAlertView alloc]
                                     initWithTitle:@": -) Completed!"
                                     message:strMessage delegate:self
                                     cancelButtonTitle:@"OK" otherButtonTitles: nil];
            [completed show];
        }
        else // Error
        {
            UIAlertView *error =[[UIAlertView alloc]
                                 initWithTitle:@": ( Error!"
                                 message:strMessage delegate:self
                                 cancelButtonTitle:@"OK" otherButtonTitles: nil];
            [error show];
        }
        
    }
    
    // release the connection, and the data object
    [connection release];
    [receivedData release];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)dealloc {
    [txtUsername release];
    [txtPassword release];
    [txtName release];
    [txtTel release];
    [txtEmail release];
    [super dealloc];
}

@end