Untitled

<!doctype html>
<html lang"fi">
<head>
<link rel="icon" type='image/png' href='images/logo.png'>
<title>
asd
</title>
<link href="css/styles.css" type="text/css" rel="stylesheet">
</head>
<body>
<!--reg alkaa-->
<form action="register.php" method="post">
<p><input type="text" name="username" placeholder="Username">
<p><input type="email" name="email" placeholder="Email">
<p><input type="password" name="pass" placeholder="Password">
<p><input type="password" name="pass1" placeholder="Password">
<p><input type="submit" name="submit" value="Register">
</form>
<?php

if(isset($_POST['submit']))
{
$username = mysqli_real_escape_string($_POST['username']);
$pass = mysqli_real_escape_string($_POST['pass']);
$pass1 = mysqli_real_escape_string($_POST['pass1']);
$email = mysqli_real_escape_string($_POST['email']);
if($username && $pass && $pass1 && $email)
{
if($pass==$pass1)
{
    $connect = mysql_connect("mysql13.000webhost.com","a2955851_SW","ASPIREX1930");
    mysql_select_db("a2955851_SW");
    $query = mysql_query("INSERT INTO users VALUES('$username','$pass','$email');");
    echo "You have been registered.";
}
else
{
    echo "Password must match.";
}
}
else
{
echo "All fields are required.";
}
}
 ?>
<!--reg end-->
<Center>
<a href="index.php">
<h1>
asd
</h1>
</center>
<div id="main">
<h3>
 <div class="menu"> <a href="index.php">Etusivu</a> &bullet;
 <a                                       </div>
</h3>
</div>
<div class="jonne">
</div>
<script src="javascript/jquery.js"></script>
</body>
</html>

$username = mysql_real_escape_string($_POST['username']);
$pass = mysql_real_escape_string($_POST['pass']);
$pass1 = mysql_real_escape_string($_POST['pass1']);
$email = mysql_real_escape_string($_POST['email']);

$username = mysqli_real_escape_string($your_connection, $_POST['username']);
$pass = mysqli_real_escape_string($your_connection, $_POST['pass']);
$pass1 = mysqli_real_escape_string($your_connection, $_POST['pass1']);
$email = mysqli_real_escape_string($your_connection, $_POST['email']);

string mysqli_real_escape_string ( mysqli $link , string $escapestr ).

$username = mysqli_real_escape_string($yourconnectionobject,$_POST['username']);

$username = mysqli_real_escape_string($your_connection, $_POST['username']);

$username = mysql_real_escape_string($_POST['username']);

$name = mysqli_real_escape_string($conn, $name);

$name = $link->real_escape_string($name);

addslashes(trim($_POST['username']));

$query = mysql_query("INSERT INTO users VALUES('$username','$pass','$email')", `$Connect`);

$username = mysql_real_escape_string($_POST['username']);

function update($data, $table, $id)
{
    global $conid;
    //echo $id;
        /*Assuming array keys are = to database fileds*/
        if (count($data) > 0) {
            foreach ($data as $key => $value) {

                $value = mysqli_real_escape_string($value); // warning in this line
                $value = "'$value'";
                $updates[] = "$key = $value";
            }
        }
        $implodeArray = implode(', ', $updates);
        $sql = ("UPDATE $table  SET $implodeArray WHERE id=$id");
        mysqli_query($conid, $sql);


}