How use curl function in php -

here class function http post request:

protected function sendrequest($function, array $parameters) {     return $this->httpclient->post($this->getapiurl() . $function, [         'form_params' => $parameters,         'auth' => [$this->getapiusername(), $this->getapipassword()],         'verify' => false,     ]); } 

now want send http post request curl using above code. how do it, or how use above code <form method=post> html.