Authentication and Login System in CodeIgniter

Authentication and Login System in CodeIgniter — a practical guide to CodeIgniter login system with clear examples you can reuse in real projects.

CodeIgniter Tutorial Series (51/74). Prefer one article? Read the complete CodeIgniter tutorial.

Short description

Verify credentials, store user id in session, and guard routes with filters.

Login sketch

$user = model('UserModel')->where('email', $email)->first();
if (! $user || ! password_verify($password, $user['password'])) {
    return redirect()->back()->with('error', 'Invalid login');
}
session()->set('user_id', $user['id']);
return redirect()->to('/dashboard');