contact_demo.php

<?php

use IXP\Models\Customer;

// sample customer with ID 18:
$cust = Customer::find(18);

// iterate over the customer's contacts:
foreach( $cust->contacts as $c ) {
  
  // and iterate over each contact's groups
  foreach( $c->contactGroupsAll()->get() as $g ) {
    echo "{$c->id} - {$g->id} - {$g->name} - {$g->type} - {$g->active}\n";
  }
  
}
  
// if you want just contact roles, use:
// $c->contactRoles()->get()

// if you want just contact groups excluding roles, use:
// $c->contactGroups()->get()