Untitled

<head>
    <title>Universalistas</title>
    <meta charset="utf-8"/>
    <link rel="stylesheet" href="css/style.css"/>
    <link rel="shortcut icon" href="css/images/logo.png"/>
</head>

</body>

<?php ob_start();

    include("conection.php");

if(isset($_POST["send"]))
{

    function validate_mail($mail)
    {
        if (preg_match("/^[A-Za-z0-9-_.+%]+@[A-Za-z0-9-.]+.[A-Za-z]{2,4}$/", $mail)) return true;
        else return false;
    }//Fin funcion validate_mail

    $no_blank = count_chars($_POST["user"], 1);
    if(!empty($no_blank[32])) echo "<script>alert('El campo usuario no debe contener espacios en blanco.');history.back();</script>";
    elseif(empty($_POST["user"])) echo "<script>alert('Ingresa tu usuario.');history.back();</script>";
    elseif(empty($_POST["password"])) echo "<script>alert('Ingresa una contraseña.');history.back();</script>";
    elseif(empty($_POST["name"]))   echo "<script>alert('Ingresa tu nombre.');history.back();</script>";
    elseif(empty($_POST["last-name"])) echo "<script>alert('Ingresa tu apellido.');history.back();</script>";
    elseif($_POST["password"] != $_POST["rpassword"]) echo "<script>alert('Las contraseñas no coinciden.');history.back();</script>";
    elseif(!validate_mail($_POST["mail"])) echo "<script>alert('El e-mail es incorrecto.');history.back();</script>";
    else
    {
        $con = new mysqli("localhost", "universalistas", "u12345", "universalistas");
        $user = mysqli_real_escape_string($con, $_POST["user"]);
        $password = mysqli_real_escape_string($con, $_POST["password"]);
        $mail = mysqli_real_escape_string($con, $_POST["mail"]);
        $name = $_POST["name"];
        $lastname = $_POST["last-name"];
        $origin = $_POST["origin"];
        $area = $_POST["area"];
        $sql = mysqli_query($con, "SELECT user_name FROM user WHERE user_name='".$user."'");
        if(mysqli_num_rows($sql) > 0) echo "<script>alert('El usuario ya existe.');history.back();</script>";
        else
        {
            $password = md5($password); //Encriptacion md5
            $reg = mysqli_query($con, "INSERT INTO user (user_name, user_password, user_mail, name, last_name, origin, area)
                VALUES ('".$user."', '".$password."', '".$mail."', '".$name."', '".$lastname."', '".$origin."', '".$area."')");
            if($reg)
            {
                echo "<script>alert('Usuario registrado correctamente.');
                window.location.href = 'index.php';</script>";
            }
            else
            {
                echo"<script>alert('¡Ha ocurrido un error y no se registraron los datos!');
                window.location.href = 'index.php';</script>";
            }
        }
    }
}

else {}

ob_end_flush() ?>

</body>

</html>