How can PHP developers prevent login loops and redirect users to the correct page after authentication?

To prevent login loops and redirect users to the correct page after authentication, PHP developers can set a session variable upon successful login and check for this variable before displaying the login page. If the session variable is set, the user can be redirected to the desired page. This helps avoid infinite loops where the user is constantly redirected back to the login page. 

session_start();

if(isset($_SESSION['logged_in'])){
    header("Location: dashboard.php");
    exit();
}

// Check login credentials
if($login_successful){
    $_SESSION['logged_in'] = true;
    header("Location: dashboard.php");
    exit();
} else {
    // Display login form
}

Keywords

PHP authentication login loops redirect session management

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