<?php

  if(isset($_POST['submit']))
{

    $username =htmlspecialchars($_POST[$username]);
    $password =sha1($_POST[$password]);
    $repeatpassword =sha1($_POST[$repeatpassword]);

        if($username&&$password&&$repeatpassword)
         {

            if($password==$repeatpassword)
            {

              /*on se connecte a la badd */

              $connect = new pdo(mysql:host=localhost;dbname=php;'root','';
              mysql_select_db('php');

              $requete = $connect->prepare("INSERT INTO user (username,password) VALUES('?,?');

              die("inscption ok <a href='login.php'> connecté </a>vous");


            }else echo "les mot de passe ne sont pas identique";

         }else echo "vous devez remplir toute les case";
}

 ?>



<form method="post" action="index.php">
  <p>Votre pseudo</p>
  <input type="text" name="username">
  <p>Votre mot de passe</p>
  <input type="password" name="password">
  <p> Retaper ton mot de passe </p>
  <input type="password" name="repeatpassword"><br/><br/>
  <input type="submit" value="S'inscrire" name="submit">
</form>