Untitled

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Login...</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
</head>
<body>
<?php
      session_start();
      session_unset();
      if(isset($_COOKIE["CU"]) and isset($_COOKIE["CP"])) {
        $username=$_COOKIE["CU"];
        $password=$_COOKIE["CP"];
    }
?>
<form class="needs-validation" action="login.php" method="POST" novalidate>
  <div class="form-column">
    <div class="col-md-4 mb-3">
      <label for="validationCustom01">E-mail</label>
      <input type="email" class="form-control" name="mail" placeholder="E-mail" value="<?php if(isset($username)) echo $username;?>" required>

      <div class="invalid-feedback">
        Wrong pattern!
      </div>
    </div>
    <div class="col-md-4 mb-3">
      <label for="validationCustom02">password</label>
      <input type="password" class="form-control" name="password" placeholder="Password" value="<?php if(isset($password)) echo $password;?>" required>
      <div class="invalid-feedback">
        Wrong pattern!
      </div>
    </div>
  </div>

  <div class="form-group">
  <div class="custom-control custom-checkbox">
  <?php
      if(isset($_COOKIE["CU"]) and isset($_COOKIE["CP"])) {
        echo "<input type=\"checkbox\" class=\"custom-control-input\" id=\"customCheck1\" name=\"customCheck1\" checked=\"true\">";
    }else{
      echo "<input type=\"checkbox\" class=\"custom-control-input\" id=\"customCheck1\" name=\"customCheck1\">";
    }
?>
  <label class="custom-control-label" for="customCheck1">Remember me</label>
</div>
  </div>
  <button class="btn btn-primary" type="submit" >Login</button>
</form>

<script>
// Example starter JavaScript for disabling form submissions if there are invalid fields
function check() {
  var check=document.getElementById("customCheck1");
    alert(check.checked);
}
(function() {
  'use strict';
  window.addEventListener('load', function() {
    // Fetch all the forms we want to apply custom Bootstrap validation styles to
    var forms = document.getElementsByClassName('needs-validation');
    // Loop over them and prevent submission
    var validation = Array.prototype.filter.call(forms, function(form) {
      form.addEventListener('submit', function(event) {
        if (form.checkValidity() === false) {
          event.preventDefault();
          event.stopPropagation();
        }
        form.classList.add('was-validated');
      }, false);
    });
  }, false);
})();
</script>

</body>
</html>
<?php
    if($_SERVER["REQUEST_METHOD"] == "POST")
    {
       require_once 'config.php';
       $username=$_POST['mail'];
       $password=$_POST['password'];
       if(isset($_POST['customCheck1']))
       {
        setcookie("CU", $username, time() + (86400 * 30), "/");
        setcookie("CP", $password, time() + (86400 * 30), "/");
       }else
       {
        setcookie("CU", $username, time()- 1, "/");
        setcookie("CP", $password, time()- 1, "/");
       }
       $sql="select * from users where username=:username";
       $stmt= $pdo->prepare($sql);
       $stmt->bindParam(':username',$username,PDO::PARAM_STR);
       $stmt->execute();
       if($stmt->rowCount() == 1)
       {
           $row= $stmt->fetch();
           $hasspassword=$row['password'];

           if(password_verify($password, $hasspassword)) //---login with hash
           {
             if(isset($_POST['rememberMe'])){
               setcookie('username',$username,time() + (86400 * 30)) ;
               setcookie('password',$password,time() + (86400 * 30)) ;
             }else{
               setcookie('username',$username,time()-1) ;
               setcookie('password',$password,time()-1) ;
             }
               session_start();
               $_SESSION['username']= $username;
               header('Location:mytable.php');
           }
           else
            header('Location:login.php');
       }
      }
?>