hash - Pasword remove hashing: convert MD5 to normal hashing PHP

Question

I am unsure as to how to convert an MD5 dehashing into a normal verification. I would like to change a hashed string to standard one. I am generating the hashed password as echo password_hash(".......", PASSWORD_DEFAULT); , just don't know how to check it in login form. My workflow is below:

 if (isset($_POST['username'], $_POST['password'])) {
    $username = $_POST['username'];
    $password = md5($_POST['password']);

    if (empty($username) or empty($password)) {
        $error = 'Prosz? poda? login i has?o !';
    } else {
        
        $query = $pdo->prepare("SELECT * FROM users WHERE user_name = ? AND user_password = ?");

        $query->bindValue(1, $username);
        $query->bindValue(2, $password);
         
        $query->execute();

        $num = $query->rowCount();

        if ($num == 1) {
            //user entered correct details
            $_SESSION['logged_in'] = true;
            
            header('Location: index.php');
            exit();

Answer 1

等待大神答复