T_String - Errore di sintassi

[badaze]

Ho provato il codice e non mi riporta alcun errore.

<?php
 session_start();
 $config = [
 'api_key' => 'INSTERT YOUR API-KEY', // 123456
 'campaign_id' => 'INSERT YOUR CAMPAIGN-ID', // 12345
 'ip_registration' => 'INSERT YOUR SERVER IP', // 127.0.0.1
 'domain' => 'INSERT YOUR DOMAIN', // domain.com without http:// and /
 'fallback_campaign_link' => 'INSERT YOUR FALLBACK CAMPAIGN LINK' // http://domain.com/index.php&utm_campaign=123356
 ];
 
 var_dump($config);

Dà visualizzando il sorgente della pagina.

array(5) {
  ["api_key"]=>
  string(20) "INSTERT YOUR API-KEY"
  ["campaign_id"]=>
  string(23) "INSERT YOUR CAMPAIGN-ID"
  ["ip_registration"]=>
  string(21) "INSERT YOUR SERVER IP"
  ["domain"]=>
  string(18) "INSERT YOUR DOMAIN"
  ["fallback_campaign_link"]=>
  string(34) "INSERT YOUR FALLBACK CAMPAIGN LINK"
}