curl_init exists: 1
array(4) {
  ["code"]=>
  int(0)
  ["message"]=>
  string(13) "Operations: 7"
  ["version"]=>
  string(3) "1.0"
  ["operations"]=>
  array(7) {
    [0]=>
    array(3) {
      ["verb"]=>
      string(11) "core/create"
      ["description"]=>
      string(16) "Create an object"
      ["extension"]=>
      string(12) "CoreServices"
    }
    [1]=>
    array(3) {
      ["verb"]=>
      string(11) "core/update"
      ["description"]=>
      string(16) "Update an object"
      ["extension"]=>
      string(12) "CoreServices"
    }
    [2]=>
    array(3) {
      ["verb"]=>
      string(19) "core/apply_stimulus"
      ["description"]=>
      string(49) "Apply a stimulus to change the state of an object"
      ["extension"]=>
      string(12) "CoreServices"
    }
    [3]=>
    array(3) {
      ["verb"]=>
      string(8) "core/get"
      ["description"]=>
      string(18) "Search for objects"
      ["extension"]=>
      string(12) "CoreServices"
    }
    [4]=>
    array(3) {
      ["verb"]=>
      string(11) "core/delete"
      ["description"]=>
      string(14) "Delete objects"
      ["extension"]=>
      string(12) "CoreServices"
    }
    [5]=>
    array(3) {
      ["verb"]=>
      string(16) "core/get_related"
      ["description"]=>
      string(50) "Get related objects through the specified relation"
      ["extension"]=>
      string(12) "CoreServices"
    }
    [6]=>
    array(3) {
      ["verb"]=>
      string(22) "core/check_credentials"
      ["description"]=>
      string(22) "Check user credentials"
      ["extension"]=>
      string(12) "CoreServices"
    }
  }
}
Calling iTop Rest API worked!