<?php
$user = 'your_user';
$pass = 'your_password';
$ip = 'your_ip';
 
$url = 'https://'.rawurlencode($user).':'.rawurlencode($pass).'@'.$ip.':2003/index.php?api=json&act=editftp'; 

$post = array('changepass' => '1', 'fuser' => 'new_dns.189.compilor.com', 'newpass' => 'FTP_PASSWORD', 'conf' => 'CONFIRM_PASSWORD');


// Set the curl parameters 
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 

if(!empty($post)){
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($post));
}

// Get response from the server. 
$resp = curl_exec($ch);

// The response will hold a string as per the API response method. In this case its PHP JSON
$res = json_decode($resp, true);

// Done ?
if(!empty($res['done'])){
	print_r($res['done']);
// Error
}else{
	print_r($res['error']);
}