PHP submit button sends to blank page loginback??

[220061]

Hello, I don't really know how to explain this but right now when I submit it stays on the loginback page andit gives me a blank screen? why is it doing this? I have already tried to display the error messages by using
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
but it doesn't tell me anything?

code:

<?php
// dit is allemaal nog niet veilig
session_start();
// Check if the user is already logged in, if yes then redirect him to welcome page
if(isset($_POST["email"]) && $_POST["password"] === true){
    header("location: welcome.php");
    exit;
}
// Include config file
include "config.php";

$email = mysqli_real_escape_string($conn , $_POST['email']);
$password = mysqli_real_escape_string($conn , $_POST['password']);
$stmt = $conn->prepare("SELECT user_id, email, password FROM users WHERE email=? AND password=? LIMIT 1");
if ($stmt->num_rows === 1) {
    $row = $stmt->fetch_array(MYSQLI_ASSOC);
    if (!password_verify($password, $row['password'])) {
        // invalid = run set of functions
        echo "This is false";
        header( "refresh:5;url=login.php" );
    }
    else {
        // login
        if($stmt->num_rows == 1)  //To check if the row exists
            {
                if($stmt->fetch()) //fetching the contents of the row
                {
                  
                    //    $_SESSION['Logged'] = 1;
                       $_SESSION['user_id'] = $user_id;
                       $_SESSION['username'] = $username;
                       echo 'Success!';
                       header("Location: welcome.php");
                 }
    
            
                else {
                    echo "INVALID USERNAME/PASSWORD Combination! You will be send back in 5 seconds 1";
                    header( "refresh:5;url=login.php" );
                }
                $stmt->close();
        }else{   
            echo "INVALID USERNAME/PASSWORD Combination! You will be send back in 5 seconds 2";
            header( "refresh:5;url=login.php" );
        }
    }
}
$stmt->bind_param('ss', $email, $password);
$stmt->execute();
$stmt->bind_result($user_id, $email, $password);
$stmt->store_result();



$conn->close();
?>

 

[220061]

UPDATE still doesn't work but this is the code right now it stops working by the password verify. thats when it continues to give me false

<?php
// dit is allemaal nog niet veilig
session_start();
// Check if the user is already logged in, if yes then redirect him to welcome page
if(isset($_POST["email"]) && $_POST["password"] === true){
    header("location: welcome.php");
    exit;
}
// Include config file
include "config.php";

// $id = mysqli_real_escape_string($conn, $_GET['ID']);
$email = mysqli_real_escape_string($conn , $_POST['email']);
$password = mysqli_real_escape_string($conn , $_POST['password']);

$sql = "SELECT email, password FROM users WHERE email=?";
$stmt = $conn->prepare($sql);
mysqli_report(MYSQLI_REPORT_STRICT);

if ($stmt = $conn->prepare($sql)) {
    $stmt->bind_param('s', $email);
    $stmt->execute();
    $stmt->bind_result($email, $password);
    // $stmt->store_result();
    $row = $stmt->fetch();
    // $resultSet = $stmt->get_result();
    // $rows = $resultSet->fetchAll(MYSQLI_ASSOC);
    // foreach ($rows as $row) {
    //     printf("%s (%s)\n", $row["email"], $row["password"]);
    // }
  
    //oke hij gaat hier nu veder
    if (password_verify($password, $row['password'])) {
                // login
                if($stmt->num_rows > 0)  //To check if the row exists
                {
                    if($stmt->fetch()) //fetching the contents of the row
                    {
                    
                        //    $_SESSION['Logged'] = 1;
                           $_SESSION['user_id'] = $user_id;
                           $_SESSION['username'] = $username;
                           echo 'Success!';
                           header("Location: welcome.php");
                     }
      
              
                    else {
                        echo "INVALID USERNAME/PASSWORD Combination! You will be send back in 5 seconds 1";
                        header( "refresh:5;url=login.php" );
                    }
                    $stmt->close();
            }else{ 
                echo "INVALID USERNAME/PASSWORD Combination! You will be send back in 5 seconds 2";
                header( "refresh:5;url=login.php" );
            }
    }
    else {
        echo "This is false";
        var_dump($email); // results null
        var_dump($password);//results to null
        // header( "refresh:5;url=login.php" );
    }

// $stmt->bind_param('ss', $email, $password);
// $stmt->execute();
// $stmt->bind_result($user_id, $email, $password);
// $stmt->store_result();



$conn->close();
}else{
    echo "it doesnt work";
}
?>

 

[220061]

new update still doesn't work its stuck on if ($stmt->num_rows == 1){

<?php
// dit is allemaal nog niet veilig
session_start();
// Check if the user is already logged in, if yes then redirect him to welcome page
if(isset($_POST["email"]) && $_POST["password"] === true){
    header("location: welcome.php");
    exit;
}
// Include config file
include "config.php";

// $id = mysqli_real_escape_string($conn, $_GET['ID']);
// $email = mysqli_real_escape_string($conn , $_POST['email']);
// $password = mysqli_real_escape_string($conn , $_POST['password']);
$email = $_POST['email'];
$password = $_POST['password'];

$sql = "SELECT email, password FROM users WHERE email=?";
$stmt = $conn->prepare($sql);
mysqli_report(MYSQLI_REPORT_STRICT);

if ($stmt = $conn->prepare($sql)) {
    $stmt->bind_param('s', $email);
    $stmt->execute();
    $stmt->bind_result($email, $password);
    $row = $stmt->get_result()->fetch_assoc();
    $result= mysqli_query($conn,$sql);
    // $stmt->store_result();
    //$row = $stmt->fetch();
    // $resultSet = $stmt->get_result();
    // $rows = $resultSet->fetchAll(MYSQLI_ASSOC);
    // foreach ($rows as $row) {
    //     printf("%s (%s)\n", $row["email"], $row["password"]);
    // }
    echo "<br>";
   
    //oke hij gaat hier nu veder
    var_dump($password); // dit is nu de code van de db?
    $test = $row['password'];
    var_dump($test); // dit is null
    var_dump($result);
    if (password_verify($password, $row['password'])) {
                // login
                if($stmt->num_rows == 1)  //To check if the row exists
                {
                    if($stmt->fetch()) //fetching the contents of the row
                    {
                     
                        //    $_SESSION['Logged'] = 1;
                           $_SESSION['user_id'] = $user_id;
                           $_SESSION['username'] = $username;
                           echo 'Success!';
                           header("Location: welcome.php");
                     }
       
               
                    else {
                        echo "INVALID USERNAME/PASSWORD Combination! You will be send back in 5 seconds 1";
                        // header( "refresh:5;url=login.php" );
                    }
                    $stmt->close();
                }else{  
                    echo "INVALID USERNAME/PASSWORD Combination! You will be send back in 5 seconds 2";
                    // header( "refresh:5;url=login.php" );
                }
    }
    else {
        echo "This is false";
        // header( "refresh:5;url=login.php" );
    }

// $stmt->bind_param('ss', $email, $password);
// $stmt->execute();
// $stmt->bind_result($user_id, $email, $password);
// $stmt->store_result();



$conn->close();
}else{
    echo "it doesnt work";
}
?>