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<?php /** * 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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