php - Codeigniter REST API elapsed time -

i'm using codeigniter rest-api (author: philsturgeon ref url:

https://github.com/philsturgeon/codeigniter-restserver)

i want add response how time took service generate , process response.

i trying use $this->benchmark->elapsed_time() in controller, doesn't send time instead sends

"success": 1,"took": "{elapsed_time}", 

i tried edit the main controller of api abstract class rest_controller extends ci_controller , append elapsed time final output send public function response($data = null, $http_code = null, $continue = false)

but no luck, keep receiving "{elapsed_time}" appreciated.

you can elapsed_time using this

$this->benchmark->mark('code_start');  // code happens here  $this->benchmark->mark('code_end');  echo $this->benchmark->elapsed_time('code_start', 'code_end');