PHP ob_get_level函数代码示例

function file_force_download($file)
{
    if (file_exists($file)) {
        // сбрасываем буфер вывода PHP, чтобы избежать переполнения памяти выделенной под скрипт
        // если этого не сделать файл будет читаться в память полностью!
        if (ob_get_level()) {
            ob_end_clean();
        }
        // заставляем браузер показать окно сохранения файла
        header('Content-Description: File Transfer');
        header('Content-Type: application/octet-stream');
        header('Content-Disposition: attachment; filename=' . basename($file));
        header('Content-Transfer-Encoding: binary');
        header('Expires: 0');
        header('Cache-Control: must-revalidate');
        header('Pragma: public');
        header('Content-Length: ' . filesize($file));
        // читаем файл и отправляем его пользователю
        if ($fd = fopen($file, 'rb')) {
            while (!feof($fd)) {
                print fread($fd, 1024);
            }
            fclose($fd);
        }
        exit;
    }
}

 public function action_messages($route_id, &$data, $args)
 {
     $uimessages = $_MIDCOM->serviceloader->load('uimessages');
     if (!$uimessages->supports('comet') || !$uimessages->can_view()) {
         return;
     }
     $type = null;
     $name = null;
     if (isset($_MIDCOM->dispatcher->get["cometType"])) {
         $type = $_MIDCOM->dispatcher->get["cometType"];
     }
     if (isset($_MIDCOM->dispatcher->get["cometName"])) {
         $name = $_MIDCOM->dispatcher->get["cometName"];
     }
     if ($type == null && $name == null) {
         throw new midcom_exception_notfound("No comet name or type defined");
     }
     if (ob_get_level() == 0) {
         ob_start();
     }
     while (true) {
         $messages = '';
         if ($uimessages->has_messages()) {
             $messages = $uimessages->render_as('comet');
         } else {
             $uimessages->add(array('title' => 'Otsikko from comet', 'message' => 'viesti from comet...'));
         }
         midcom_core_helpers_comet::pushdata($messages, $type, $name);
         ob_flush();
         flush();
         sleep(5);
     }
     // $data['messages'] = $messages;
 }

 public function handle($e)
 {
     $app = App::getInstance();
     while (ob_get_level() > 0) {
         ob_end_clean();
     }
     // header($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server Error', true, 500);
     if ($app->config('bono.debug') !== true) {
         if (isset($app->response)) {
             $app->response->setStatus(500);
         }
         if (isset($app->theme)) {
             $view = $app->theme->getView();
             $errorTemplate = 'error';
         } else {
             $view = new View();
             $errorTemplate = '../templates/error.php';
             if (is_readable($errorTemplate)) {
                 $view->setTemplatesDirectory('.');
             }
         }
         return $view->display($errorTemplate, array('error' => $e), 500);
     }
     return call_user_func_array(array($app->whoops, Run::EXCEPTION_HANDLER), func_get_args());
 }

 public function indexOp()
 {
     if (ob_get_level()) {
         ob_end_clean();
     }
     $logic_queue = Logic('queue');
     $worker = new QueueServer();
     $queues = $worker->scan();
     while (true) {
         $content = $worker->pop($queues, 1800);
         if (is_array($content)) {
             $method = key($content);
             $arg = current($content);
             $result = $logic_queue->{$method}($arg);
             if (!$result['state']) {
                 $this->log($result['msg'], false);
             }
             //                 echo date('Y-m-d H:i:s',time()).' '.$method."\n";
             //                 flush();
             //                 ob_flush();
         } else {
             $model = Model();
             $model->checkActive();
             unset($model);
             //                 echo date('Y-m-d H:i:s',time())."  ---\n";
             //                 flush();
             //                 ob_flush();
         }
     }
 }

 /**
  * This function could be used eventually to support more modes.
  *
  * @return integer  the output buffer mode
  */
 private function _getMode()
 {
     $mode = 0;
     if ($GLOBALS['cfg']['OBGzip'] && function_exists('ob_start')) {
         if (ini_get('output_handler') == 'ob_gzhandler') {
             // If a user sets the output_handler in php.ini to ob_gzhandler, then
             // any right frame file in phpMyAdmin will not be handled properly by
             // the browser. My fix was to check the ini file within the
             // PMA_outBufferModeGet() function.
             $mode = 0;
         } elseif (function_exists('ob_get_level') && ob_get_level() > 0) {
             // If output buffering is enabled in php.ini it's not possible to
             // add the ob_gzhandler without a warning message from php 4.3.0.
             // Being better safe than sorry, check for any existing output handler
             // instead of just checking the 'output_buffering' setting.
             $mode = 0;
         } else {
             $mode = 1;
         }
     }
     // Zero (0) is no mode or in other words output buffering is OFF.
     // Follow 2^0, 2^1, 2^2, 2^3 type values for the modes.
     // Usefull if we ever decide to combine modes.  Then a bitmask field of
     // the sum of all modes will be the natural choice.
     return $mode;
 }

 public function createImageKey($user, $dblink)
 {
     if ($stm = $dblink->prepare("SELECT 2fa_imgname FROM  " . TABLE_USERS . " WHERE email = ?")) {
         $stm->execute(array($user));
         $row = $stm->fetch();
         $stm = NULL;
         $file = 'uploads/2fa/' . $row['2fa_imgname'];
     }
     $im = new Image();
     $imageclean = $im->loadLocalFile($file);
     $imagekey = $im->embedStegoKey($imageclean);
     $stegoKey = $im->stegoKey;
     $hash = password_hash($stegoKey, PASSWORD_DEFAULT);
     if ($stm = $dblink->prepare("UPDATE " . TABLE_USERS . " SET 2fa_hash = ? WHERE email = ?")) {
         $stm->execute(array($hash, $user));
         $stm = NULL;
     }
     if (ob_get_level()) {
         ob_end_clean();
     }
     header('Content-Description: File Transfer');
     header('Content-Type: application/octet-stream');
     header('Content-Disposition: attachment; filename=KeyImage.png');
     header('Content-Transfer-Encoding: binary');
     header('Expires: 0');
     header('Cache-Control: must-revalidate');
     header('Pragma: public');
     //header('Content-Length: ' . filesize($file));
     $ok = imagepng($imagekey);
     //, NULL, 9
     imagedestroy($imagekey);
     return $ok;
 }

 /**
  * Handle a view exception.
  *
  * @param  \Exception  $e
  * @param  int  $obLevel
  * @return void
  *
  * @throws $e
  */
 protected function handleViewException(Exception $e, $obLevel)
 {
     while (ob_get_level() > $obLevel) {
         ob_end_clean();
     }
     throw $e;
 }

function __phutil_init_script__()
{
    // Adjust the runtime language configuration to be reasonable and inline with
    // expectations. We do this first, then load libraries.
    // There may be some kind of auto-prepend script configured which starts an
    // output buffer. Discard any such output buffers so messages can be sent to
    // stdout (if a user wants to capture output from a script, there are a large
    // number of ways they can accomplish it legitimately; historically, we ran
    // into this on only one install which had some bizarre configuration, but it
    // was difficult to diagnose because the symptom is "no messages of any
    // kind").
    while (ob_get_level() > 0) {
        ob_end_clean();
    }
    error_reporting(E_ALL | E_STRICT);
    $config_map = array('display_errors' => true, 'log_errors' => true, 'error_log' => null, 'xdebug.max_nesting_level' => null, 'memory_limit' => -1);
    foreach ($config_map as $config_key => $config_value) {
        ini_set($config_key, $config_value);
    }
    if (!ini_get('date.timezone')) {
        // If the timezone isn't set, PHP issues a warning whenever you try to parse
        // a date (like those from Git or Mercurial logs), even if the date contains
        // timezone information (like "PST" or "-0700") which makes the
        // environmental timezone setting is completely irrelevant. We never rely on
        // the system timezone setting in any capacity, so prevent PHP from flipping
        // out by setting it to a safe default (UTC) if it isn't set to some other
        // value.
        date_default_timezone_set('UTC');
    }
    // Now, load libphutil.
    $root = dirname(dirname(__FILE__));
    require_once $root . '/src/__phutil_library_init__.php';
}

 public function __construct($args)
 {
     $this->args = $args;
     Console::$have_readline = function_exists("readline");
     for ($x = 1; $x < count($args); $x++) {
         switch ($args[$x]) {
             case "-h":
             case "--help":
                 $this->usage();
                 break;
             default:
                 if (substr($args[$x], 0, 1) == "-") {
                     $this->usage();
                 } elseif (defined("HALFMOON_ENV")) {
                     $this->usage();
                 } else {
                     define("HALFMOON_ENV", $args[$x]);
                 }
         }
     }
     require_once __DIR__ . "/../halfmoon.php";
     error_reporting(E_ALL | E_STRICT);
     ini_set("error_log", NULL);
     ini_set("log_errors", 1);
     ini_set("html_errors", 0);
     ini_set("display_errors", 0);
     while (ob_get_level()) {
         ob_end_clean();
     }
     ob_implicit_flush(true);
     /* TODO: forcibly load models so they're in the tab-completion cache */
     print "Loaded " . HALFMOON_ENV . " environment (halfmoon)\n";
     $this->loop();
 }

 /**
  * Renders the main content of the view.
  * The content is divided into sections, such as summary, items, pager.
  * Each section is rendered by a method named as "renderXyz", where "Xyz" is the section name.
  * The rendering results will replace the corresponding placeholders in {@link template}.
  */
 public function renderContent()
 {
     if ($this->disableBuffering) {
         while (ob_get_level()) {
             ob_end_clean();
         }
     }
     if (!$this->disableHttpHeaders) {
         if ($this->mimetype) {
             header('Content-Type: ' . $this->mimetype . '; charset=' . ($this->encoding === null ? 'utf-8' : $this->encoding));
         }
         if ($this->filename !== null && strlen($this->filename) > 0) {
             $filename = $this->filename;
             if ($this->fileExt !== null && strlen($this->fileExt) > 0) {
                 $filename .= date('_U_Ymd.') . $this->fileExt;
             }
             header('Content-Disposition: attachment; filename="' . $filename . '"');
         }
         header('Pragma: no-cache');
         header('Expires: 0');
     }
     $this->renderItems();
     if (!$this->disableHttpHeaders) {
         Yii::app()->end();
     }
 }

 /**
  * starts new clean output buffer
  *
  * @access  public
  *
  * @author  patrick.kracht
  */
 public function clean_ob()
 {
     if (!ob_get_length() || !ob_get_level()) {
         ob_start();
     }
     session_cache_limiter('must-revalidate');
 }

 /**
  * Renders the JS required for the Backbone-based Display Tab
  */
 function display_tab_js_action($return = FALSE)
 {
     // Cache appropriately
     $this->object->do_not_cache();
     // Ensure that JS is returned
     $this->object->set_content_type('javascript');
     while (ob_get_level() > 0) {
         ob_end_clean();
     }
     // Get all entities used by the display tab
     $context = 'attach_to_post';
     $gallery_mapper = $this->get_registry()->get_utility('I_Gallery_Mapper', $context);
     $album_mapper = $this->get_registry()->get_utility('I_Album_Mapper', $context);
     $display_type_mapper = $this->get_registry()->get_utility('I_Display_Type_Mapper', $context);
     $source_mapper = $this->get_registry()->get_utility('I_Displayed_Gallery_Source_Mapper', $context);
     $security = $this->get_registry()->get_utility('I_Security_Manager');
     // Get the nextgen tags
     global $wpdb;
     $tags = $wpdb->get_results("SELECT DISTINCT name AS 'id', name FROM {$wpdb->terms}\n                        WHERE term_id IN (\n                                SELECT term_id FROM {$wpdb->term_taxonomy}\n                                WHERE taxonomy = 'ngg_tag'\n                        )");
     $all_tags = new stdClass();
     $all_tags->name = "All";
     $all_tags->id = "All";
     array_unshift($tags, $all_tags);
     $display_types = $display_type_mapper->find_all();
     usort($display_types, array($this->object, '_display_type_list_sort'));
     $output = $this->object->render_view('photocrati-attach_to_post#display_tab_js', array('displayed_gallery' => json_encode($this->object->_displayed_gallery->get_entity()), 'sources' => json_encode($source_mapper->select()->order_by('title')->run_query()), 'gallery_primary_key' => $gallery_mapper->get_primary_key_column(), 'galleries' => json_encode($gallery_mapper->find_all()), 'albums' => json_encode($album_mapper->find_all()), 'tags' => json_encode($tags), 'display_types' => json_encode($display_types), 'sec_token' => $security->get_request_token('nextgen_edit_displayed_gallery')->get_json()), $return);
     return $output;
 }

 /**
  * Output file to the browser.
  * For performance reasons, we avoid SS_HTTPResponse and just output the contents instead.
  */
 public function sendFile($file)
 {
     $path = $file->getFullPath();
     if (SapphireTest::is_running_test()) {
         return file_get_contents($path);
     }
     header('Content-Description: File Transfer');
     // Quotes needed to retain spaces (http://kb.mozillazine.org/Filenames_with_spaces_are_truncated_upon_download)
     header('Content-Disposition: inline; filename="' . basename($path) . '"');
     header('Content-Length: ' . $file->getAbsoluteSize());
     header('Content-Type: ' . HTTP::get_mime_type($file->getRelativePath()));
     header('Content-Transfer-Encoding: binary');
     // Fixes IE6,7,8 file downloads over HTTPS bug (http://support.microsoft.com/kb/812935)
     header('Pragma: ');
     if ($this->config()->min_download_bandwidth) {
         // Allow the download to last long enough to allow full download with min_download_bandwidth connection.
         increase_time_limit_to((int) (filesize($path) / ($this->config()->min_download_bandwidth * 1024)));
     } else {
         // Remove the timelimit.
         increase_time_limit_to(0);
     }
     // Clear PHP buffer, otherwise the script will try to allocate memory for entire file.
     while (ob_get_level() > 0) {
         ob_end_flush();
     }
     // Prevent blocking of the session file by PHP. Without this the user can't visit another page of the same
     // website during download (see http://konrness.com/php5/how-to-prevent-blocking-php-requests/)
     session_write_close();
     readfile($path);
     die;
 }

 public function testInherit()
 {
     $level = ob_get_level();
     $text = $this->getEngine()->render('index.html.php', null, true);
     $this->assertRegExp('/#layout_header\\s*#index_content\\s*#layout_footer/', $text);
     $this->assertEquals(ob_get_level(), $level);
 }

 /**
  * @test
  * @depends obActiveTest
  */
 public function obGetEndTest()
 {
     \ob_start();
     $n = \ob_get_level();
     echo __CLASS__;
     $this->assertTrue(\ob_get_end() === __CLASS__ && $n > \ob_get_level());
 }