PDO query does not return anything

Maybe this is a bad question but Ive been trying for so long and Im not sure what Im doing wrong so I thought I might ask for help. I need to do a Sign In form. First I needed to verify if the email and password of a certain user match so I created a function verifyAdmin(). To pass the variables inside the function I used:

<?php         
                 
  if(isset($_POST['submit'])){
    $email = $_POST['email'];
    $password = $_POST['password'];
    $admin = new Admin();
    echo $admin->verifyAdmin($email,$password);
  }

?>

The function inside the Admin class:

public function verifyAdmin($email,$password){
    $sql= "SELECT * FROM admins WHERE email = ':email' AND password = ':password'";
    $result = $this->prepare($sql);
    $result->bindParam(':email',$email);
    $result->bindParam(':password',$password);
    $result->execute();
    $result->setFetchMode(PDO::FETCH_CLASS,'Admin');
    
    return $result->fetch();    
}

Even when I write a matching email and password when I echo the function it still does not display anthing. I also tried to return a var_dump of $result->fetch() and it always returns bool(false) even if theres a matching email and password.

>Solution :

1. Don’t echo when debugging, always use var_dump (or other equivalent, like dd or kint). That will show actual output
2. For always returning false:

Your query is WHERE email = ':email' and you do $result->bindParam(':email',$email) – so that becomes invalid query, because prepared statement will look like this: WHERE email = ''user@email.com''. See syntax error here?

Don’t put your placeholders in quotes, as bindParam will do it for you:

SELECT * FROM admins WHERE email = :email AND password = :password