[ 'priority' => 'normal', 'dry_run' => true, 'apiKey' => 'AIzaSyDlAQoR0WF__xsFp9vKnJJB-7uxu94hjeY', ], 'fcm' => [ 'priority' => 'normal', 'dry_run' => false, 'apiKey' => 'My_ApiKey', ], 'apn' => [ 'certificate' => __DIR__ . '/iosCertificates/apns-dev-cert.pem', 'passPhrase' => '1234', //Optional 'passFile' => __DIR__ . '/iosCertificates/yourKey.pem', //Optional 'dry_run' => true ] ];