shorten url using bit.ly api

shorten.php

<?php

//função do curl baseado no script do David Walsh (http://davidwalsh.name/)
function curl_get_result($url) {
  $ch = curl_init($url);
  $timeout = 50;
  curl_setopt($ch,CURLOPT_URL,$url);
  curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
  curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
  $data = curl_exec($ch);
  curl_close($ch);
  return $data;
}

function shortURL($link) {
	
	$format = "json";
	$login = "your-login";
	$apiKey = "insert_your_apikey";
	

	$bitly = 'https://api-ssl.bitly.com/v3/shorten?login='.$login.'&apiKey='.$apiKey.'&longUrl='.urldecode($link).'&format='.$format;
	
	$getURL = curl_get_result($bitly);
	
	$json = @json_decode($getURL, true);
	

	return $json['data']['url'];
	
}

echo shortURL("http://google.com"); // example