POST API call using curl in PHP Codeigniter

php_post_api_call_using_curl.php

<?php
    $url = base_url().'index.php/controller_name/function_name';
    $ch = curl_init($url);
    $id = 1;
    $code = 'DHA';
    $myvars = 'id='.$id.'&code='.$code;
    curl_setopt( $ch, CURLOPT_POST, 1);
    curl_setopt( $ch, CURLOPT_POSTFIELDS, $myvars);
    curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt( $ch, CURLOPT_HEADER, 0);
    curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1);
    $response = curl_exec( $ch );
    curl_close($ch);
?>