'https://path/to/hybridauth/examples/example_06/callback.php', 'providers' => [ 'Twitter' => [ 'enabled' => true, 'keys' => [ 'key' => '...', 'secret' => '...', ], ], 'LinkedIn' => [ 'enabled' => true, 'keys' => [ 'id' => '...', 'secret' => '...', ], ], 'Facebook' => [ 'enabled' => true, 'keys' => [ 'id' => '...', 'secret' => '...', ], ], ], ];