Send data to url in form handler

I have a salesforce form, that sends form data to salesforce_url. I am implementing a form handler. How do I send data to salesforce-url in the form handler. In the basic form it would be sent via

<form action="salesforce-url" method="POST" role="form">

Now with the form handler I have the action set to:

<form action="/form-handler.php" method="POST" role="form">

In my form handler at form-handler.php how can I push the data to http://ift.tt/L0I4hY.

PS: Using google captcha and will be auto populating certain form variables to add to complexity. Below is my form-handler...

<?php

    $email;$comment;$captcha;
    if(isset($_POST['email'])){
      $email=$_POST['email'];
    }if(isset($_POST['g-recaptcha-response'])){
      $captcha=$_POST['g-recaptcha-response'];
    }
    if(!$captcha){
      echo '<h2>Please check the the captcha form.</h2>';
      exit;
    }
    $response=file_get_contents("http://ift.tt/1xXFpRg".$captcha."&remoteip=".$_SERVER['REMOTE_ADDR']);
    if($response.success==false)
    {
      echo '<h2>Please no spam, thank you.</h2>';
    }else
    {
      header("Location: http://ift.tt/1NJg9lk");
    }

?>