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/**
 * An example of Listener usage with HTTP_Request. This downloads and saves 
 * the file displaying the progress bar in the process.
 * 
 * Note two things:
 * 1) The file should be run in console, not in browser;
 * 2) You should turn output buffering OFF for this to work properly.
 *
 * @category    HTTP
 * @package     HTTP_Request
 * @version     CVS: $Id: download-progress.php,v 1.4 2007/10/26 13:45:56 avb Exp $
 * @ignore
 */

/**
 * Class for performing HTTP requests
 */
require_once 'HTTP/Request.php';
require_once 'HTTP/Request/Listener.php';
require_once 'Console/ProgressBar.php';

PEAR::setErrorHandling(PEAR_ERROR_DIE);

set_time_limit(0);

/**
 * A Listener for HTTP_Request that draws download progress indicator
 *
 * @category    HTTP
 * @package     HTTP_Request
 * @ignore
 */
class HTTP_Request_DownloadListener extends HTTP_Request_Listener
{
   /**
    * Handle for the target file
    * @var int
    */
    var $_fp;

/**
    * Console_ProgressBar instance used to display the indicator
    * @var object
    */
    var $_bar;

/**
    * Name of the target file
    * @var string
    */
    var $_target;

/**
    * Number of bytes received so far
    * @var int
    */
    var $_size = 0;

function HTTP_Request_DownloadListener()
    {
        $this->HTTP_Request_Listener();
    }

/**
    * Opens the target file
    * @param string Target file name
    * @throws PEAR_Error
    */
    function setTarget($target)
    {
        $this->_target = $target;
        $this->_fp = @fopen($target, 'wb');
        if (!$this->_fp) {
            PEAR::raiseError("Cannot open '{$target}'");
        }
    }

function update(&$subject, $event, $data = null)
    {
        switch ($event) {
            case 'sentRequest': 
                $this->_target = basename($subject->_url->path);
                break;

case 'gotHeaders':
                if (isset($data['content-disposition']) &&
                    preg_match('/filename="([^"]+)"/', $data['content-disposition'], $matches)) {

$this->setTarget(basename($matches[1]));
                } else {
                    $this->setTarget($this->_target);
                }
                $this->_bar =& new Console_ProgressBar(
                    '* ' . $this->_target . ' %fraction% KB [%bar%] %percent%', '=>', '-', 
                    79, (isset($data['content-length'])? round($data['content-length'] / 1024): 100)
                );
                $this->_size = 0;
                break;

case 'tick':
                $this->_size += strlen($data);
                $this->_bar->update(round($this->_size / 1024));
                fwrite($this->_fp, $data);
                break;

case 'gotBody':
                fclose($this->_fp);
                break;

case 'connect':
            case 'disconnect':
                break;

default:
                PEAR::raiseError("Unhandled event '{$event}'");
        } // switch
    }
}

// Try using any other package if you like, but choose the bigger ones
// to be able to see the progress bar
$url = 'http://pear.php.net/get/HTML_QuickForm-stable';

$req =& new HTTP_Request($url);

$download =& new HTTP_Request_DownloadListener();
$req->attach($download);
$req->sendRequest(false);
?>
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// +-----------------------------------------------------------------------+
// | Copyright (c) 2002, Richard Heyes                                     |
// | All rights reserved.                                                  |
// |                                                                       |
// | Redistribution and use in source and binary forms, with or without    |
// | modification, are permitted provided that the following conditions    |
// | are met:                                                              |
// |                                                                       |
// | o Redistributions of source code must retain the above copyright      |
// |   notice, this list of conditions and the following disclaimer.       |
// | o Redistributions in binary form must reproduce the above copyright   |
// |   notice, this list of conditions and the following disclaimer in the |
// |   documentation and/or other materials provided with the distribution.|
// | o The names of the authors may not be used to endorse or promote      |
// |   products derived from this software without specific prior written  |
// |   permission.                                                         |
// |                                                                       |
// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS   |
// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT     |
// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
// | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT  |
// | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
// | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT      |
// | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
// | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
// | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT   |
// | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
// | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  |
// |                                                                       |
// +-----------------------------------------------------------------------+
// | Author: Richard Heyes <richard@phpguru.org>                           |
// +-----------------------------------------------------------------------+

/**
 * This will grab a webpage and display it
 *
 * @category    HTTP
 * @package     HTTP_Request
 * @version     CVS: $Id: example.php,v 1.7 2007/05/18 19:20:12 avb Exp $
 * @ignore
 */

/**
 * Class for performing HTTP requests
 */
include('HTTP/Request.php');

$req = &new HTTP_Request('http://www.php.net');
$req->setMethod(HTTP_REQUEST_METHOD_POST);
$req->addPostData('Foo', 'bar');
$req->sendRequest();
$response1 = $req->getResponseBody();

$req->setMethod(HTTP_REQUEST_METHOD_GET);
$req->setURL('http://pear.php.net');
$req->clearPostData();
$req->sendRequest();

$response2 = $req->getResponseBody();

echo $response1;
echo $response2;
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