PHP mySQL check if username and password are in the database

Question

I want my code to check if the username and password exist in my database. It does work hardcoded, but I want to do it with a database.Right now this is what I have:

Answer 1

Try this: (i have used mysql object oriented,if you want you can use other version)

if(isset($_POST["name"], $_POST["password"])) {

        $name = $_POST["name"]; 
        $password = $_POST["password"];


        $select1 = "SELECT password FROM USERS WHERE username = '".$name."'";

        $result1=$conn->query($select1);
        $row1=$result1->fetch_assoc();

        $select2 = "SELECT username FROM USERS WHERE password = '".$password."'";

        $result2=$conn->query($select2);
        $row2=$result2->fetch_assoc();


        if($name == $row2["username"] && $password == $row1["password"]) 
        { 
             $_SESSION["logged_in"] = true; 
            $_SESSION["naam"] = $name; 

        }
        else
        {
            echo'The username or password are incorrect!';
        }