Weblabor

 <script type="text/javascript" src="jquery.js"></script>
  <script>
    $(document).ready(function(){
		$('#feedback').load('check.php').show();
		     $('#email_input').keyup(function(){
				 $.post('check.php', {email: form.email.value},
				 function(result){
					 $('#feedback').html(result).show();
					 });
				 
				 });		 
		});
  </script> 

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?php
   mysql_connect("localhost","root","");
   mysql_select_db("cukraszat");
   mysql_query("SET NAMES 'utf8'");
   //$username = iconv("UTF-8", "ISO-8859-2", $_POST["username"]);
		
		   mb_internal_encoding("UTF-8");
      $email=$_POST["email"];
	  $email=filter_var($_POST["email"], FILTER_SANITIZE_EMAIL);
	  $password=$_POST["password"];
       $check=mysql_query("select email from user where email='$email'");
      $sor=mysql_num_rows($check);
  
	   
	   if($_POST["email"] == NULL) {
		   $error[]= "";
		   					 ?>
                    <script type="text/javascript">
                     document.getElementById("regel").disabled="disabled";
                    </script> 
                     
		<?php
		   }
			   if(!filter_var($email, FILTER_VALIDATE_EMAIL) && mb_strlen($_POST["email"]) >0 ) {
				$error[]="<font color='#990000'> Hibas emailcim formátum</font>";
					
			   }
								 ?>
                    <script type="text/javascript">
                     document.getElementById("regel").disabled="disabled";
                    </script> 
                     
		<?php
		 
		if($sor == 1){
		$error[]="<font color='#990000'> Ezzel a cím foglalt!</font>";
							 ?>
                    <script type="text/javascript">
                     document.getElementById("regel").disabled="disabled";
                    </script> 
                     
		<?php
				}
	//	if(!empty($_POST["password"]) && mb_strlen($_POST["password"]) <= 5 ) {
		//		$error[]="<font color='#990000'>Gyenge</font>";
		//	}  //else if(!empty($_POST["password"]) && mb_strlen($_POST["password"]) > 5){  echo "<font color='#00CC00'>Megfelelõ</font>";}

				if(!isset($error)){
					echo "<font color='#00CC00'> Megfelelõ</font>";	
					 ?>
                    <script type="text/javascript">
                     document.getElementById("regel").disabled="";
                    </script> 
                     
		<?php
		}
		else {
						echo implode ($error);
						}
		   
		   
		   
	   
?>

  $q=mysql_query("select *,c.id as cid from cart c left join product p ON (c.p_id=p.id) where u_id='$_SESSION[uid]'");
   while($r=mysql_fetch_assoc($q)) { 
   $ossz=$r["price"]*$r["quantity"]; $vegossz=$vegossz+=$ossz; }