js use karanne nathuwa wena method ekak aththema nadda redirect karanna php walin? header eke condition wadi
redirect wenne na 
error log eke mokuth watenneth na.ekko meke mata penne nathi awulakda?
redirect wenne na 
error log eke mokuth watenneth na.ekko meke mata penne nathi awulakda?
Code:
<?php
error_reporting(E_ALL);
ini_set('display_errors', 0);
ini_set('log_errors',1);
$db_host = "localhost";
$db_name = "sample_proj";
$db_user = "root";
$db_pass = "";
$conn = new PDO("mysql:host={$db_host};dbname={$db_name}", $db_user, $db_pass);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$msg = '';
if(isset($_POST['login_btn']))
{
//echo isset($_POST['login_btn']);
$user = $_REQUEST['user_name'];
$pass = $_REQUEST['user_pass'];
$sql = "SELECT * FROM login WHERE user_name = :u";
$stmt = $conn->prepare($sql);
$stmt->bindValue(':u', $user);
$stmt->execute();
$result = $stmt->fetchAll();
if($result)
{
if(session_status() == PHP_SESSION_NONE)
{
session_start();
foreach($result as $row)
{
if(password_verify($pass, $row['user_pass']))
{
$_SESSION['userid'] = $row['user_id'];
$_SESSION['role'] = $row['user_role'];
header("Location: dashboard.php");
exit;
}
}
}
}
else
{
header("Location: index.php");
exit;
}
}
?>





condition 2ka check kara echo 2k daala. pwd hariyata dunnama user exist kiyala watenna.eka wada.eka thiyeddi kohomath redirect wenne nathi hinda eka ayin kara 

