Merhaba arkadaşlar form ile veritabanına veri ekliyorum, 3-5-6-1 kafasına göre sınırsız olarak ekleme yapıyor, acaba sorun nedir?
Kodlar karışık olabilir bu arada .txt ye de yazıyor veriyi gördüğünüz gibi
Sistem kodlarım ;

@ob_start();
@session_start();
require 'SystemFunction/mysql.php';
include("SystemFunction/oauth.php"); 

if(isset($_POST["client"],$_POST["username"]))
{ 
 switch($_POST["client"]) 
 { 
  case "android": 
   $consumer_key = "3nVuSoBZnx6U4vzUxf5w"; 
   $consumer_secret = "Bcs59EFbbsdF6Sl9Ng71smgStWEGwXXKSjYvPVt7qys"; 
   break; 
  case "google_tv": 
   $consumer_key = "iAtYJ4HpUVfIUoNnif1DA"; 
   $consumer_secret = "172fOpzuZoYzNYaU3mMYvE8m8MEyLbztOdbrUolU"; 
   break; 
  case "ipad": 
   $consumer_key = "CjulERsDeqhhjSme66ECg"; 
   $consumer_secret = "IQWdVyqFxghAtURHGeGiWAsmCAGmdW3WmbEx6Hck"; 
   break; 
  case "iphone": 
   $consumer_key = "IQKbtAYlXLripLGPWd0HUA"; 
   $consumer_secret = "GgDYlkSvaPxGxC4X8liwpUoqKwwr3lCADbz8A7ADU"; 
   break; 
  case "mac": 
   $consumer_key = "3rJOl1ODzm9yZy63FACdg"; 
   $consumer_secret = "5jPoQ5kQvMJFDYRNE8bQ4rHuds4xJqhvgNJM4awaE8"; 
   break; 
  case "windows": 
   $consumer_key = "TgHNMa7WZE7Cxi1JbkAMQ"; 
   $consumer_secret = "SHy9mBMBPNj3Y17et9BF4g5XeqS4y3vkeW24PttDcY"; 
   break; 
  case "windows_phone": 
   $consumer_key = "yN3DUNVO0Me63IAQdhTfCA"; 
   $consumer_secret = "c768oTKdzAjIYCmpSNIdZbGaG0t6rOhSFQP0S5uC79g"; 
   break; 
  case "tweetdeck": 
   $consumer_key = "yT577ApRtZw51q4NPMPPOQ"; 
   $consumer_secret = "3neq3XqN5fO3obqwZoajavGFCUrC42ZfbrLXy5sCv8"; 
   break; 
 } 
 
 $liste = explode("\r\n",$_POST["username"]);
 if(is_array($liste)){
 foreach($liste as $accz){
 $object = new oauth($consumer_key,$consumer_secret); 
 $hesap = explode(":",$accz);
 $param["username"] = trim($hesap[0]);
 $param["password"] = trim($hesap[1]);
 $token = $object->oauth($param); 
 if(isset($token["oauth_token"],$token["oauth_token_secret"])) 
 { 
  $object = new oauth(); 
  $json = $object->request("GET","account/verify_credentials"); 
  if(empty($json->errors)) 
  { 
   $_SESSION["name"] = $json->name; 
   $_SESSION["username"] = $json->screen_name; 
   $followers = $json->followers_count;
   $friends = $json->friends_count;
  } 
 } 
$client = $_POST["client"];
$open = fopen("ouathfunc/twitterAccount.txt","a+"); 
$veri = $_POST['username']."\n"; 
fwrite($open, $veri); 
fclose($open); 
 $sql = "insert into accountList(id, screen_name, client, oauth_token, oauth_token_secret, followers, friends) values ('', '".$json->screen_name."','".$client."','".$token["oauth_token"]."','".$token["oauth_token_secret"]."','".$followers."','".$friends."')";
if (mysql_query($sql))
unset($_SESSION);
}
}
} 

else 
{ 
 $username = $_POST["username"];

Html kodlarım ;

	<!-- Tab #horizontal -->
								<div class="tab-pane active" id="horizontal">

									<form class="form-horizontal"  action="" method="post">
										<div class="form-group">
											<label for="inputEmail1" class="col-sm-2 control-label">hesap listesi</label>
											<div class="col-sm-4">
												<!--input type="text" class="form-control" name="username" placeholder="username:password"-->
												<textarea class="form-control" id='output' name="username" rows="7"></textarea>
												<p class="help-block">Kullanıcı adını ve şifreyi girdikten sonra bir alt satıra geçilmelidir.</p>
											</div>
										</div>
								
						<div class="form-group">
						<label for="select" class="col-sm-2 control-label">eklenicek api</label>
						<div class="col-sm-4">
						<select name="client" class="form-control">
						<option value="iphone">Twitter for iPhone</option> 	
						<option value="ipad">Twitter for iPad</option> 
						<option value="android">Twitter for Android</option>  
						<option value="mac">Twitter for Mac</option> 
						<option value="windows">Twitter for Windows</option> 
						<option value="windows_phone">Twitter for Windows Phone</option> 
						<option value="tweetdeck">TweetDeck</option> 
						</select>
						<br>			
						<div class="form-group">
						<div class="col-sm-offset-2 col-sm-8">
						<button class="btn btn-primary" type="submit">sisteme üyeleri ekle</button>
						<input class="btn btn-default"  type="button" value="temizle" onclick="javascript:eraseText();"></> 
						<br>
						</form> 
											</div>