Use of Xrl.in

To make it easier for developers to use there is an API for creating links on Xrl.In. To create a link simply fetch http://xrl.in/?r=key&xrl=http://your.link/here which will return the id for that link. The id can then be attached to either http://xrl.in/ or http://preview.xrl.in/. The results may sometimes return ! which is an indication that the entered link was invalid. Below you can find a few examples of how to use this in several programing languages.

All these examples require the use of some programing language, if you after a simple method of including this in your site see HTML code.

PHP

<?php
   $link = 'http://your.link/here'; // maybe $_REQUEST['xrl']
   if (function_exists('curl_init')) {
      $ch = curl_init('http://xrl.in/?r=key&xrl=' . urlencode$link));
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
      @curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
      curl_setopt($ch, CURLOPT_ENCODING, 'deflate,gzip');
      curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
      $xrl_id = curl_exec($ch);
    } else {
      $xrl_id = file_get_contents('http://xrl.in/?r=key&xrl=' . urlencode($link));
    }
    if($xrl_id == '!'){
die('URL was invalid');
    }
    echo('http://xrl.in/'.$xrl_id);
?>

JavaScript

function fetchXrlInLink(link)
{ 
 var httpRequest;

 if (window.XMLHttpRequest)
 { // Mozilla, Safari, ...
   httpRequest = new XMLHttpRequest();
   if (httpRequest.overrideMimeType)
   {
     httpRequest.overrideMimeType('text/xml');
   }
 } else if (window.ActiveXObject)
 { // IE
   try
   {
     httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
   } catch (e)
   {
     try
     {
       httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
     } catch (e) {}
   }
 }

 if (!httpRequest) {
   alert('Giving up :( Cannot create an XMLHTTP instance');
   return;
 }
 httpRequest.onreadystatechange = function() { alertContents(httpRequest); };
 httpRequest.open('GET', 'http://xrl.in/?r=key&xrl=' + encodeURIComponent(link), true);
 httpRequest.send('');
}

function alertContents(httpRequest)
{
 if (httpRequest.readyState == 4)
 {
   if (httpRequest.status == 200)
   {
     var response = httpRequest.responseText;
     if(response != '!')
     {
       alert('http://xrl.in/' + response);
     } else 
     {
       alert('The URL was invalid');
     }
   } else
   {
     alert('There was a problem with the request.');
   }
 }
}
fetchXrlInLink('http://your.link/here');

Other Languages

If you know how to use Xrl.in in another programing language with out an example here please email it to the owner of codefisher.org (& xrl.in) to have it included here.