function _ultimate_cron_poorman_page_flush in Ultimate Cron 7.2

Output buffer callback for poormans cron early page flush.

Parameters

string $content: The content of the output buffer.

Return value

string The content of the output buffer.

1 string reference to '_ultimate_cron_poorman_page_flush'

ultimate_cron.poorman.inc in ./ultimate_cron.poorman.inc

Poormans cron functions.

File

./ultimate_cron.poorman.inc, line 16

Poormans cron functions.

Code

function _ultimate_cron_poorman_page_flush($content) {
  if (empty($GLOBALS['ultimate_cron_page_flush'])) {
    return $content;
  }

  // Check output buffer handlers to determine if we can safely
  // set the content size in the http header.
  $handlers = ob_list_handlers();

  // Pop ourselves off...
  array_pop($handlers);

  // We can safe ignore default output handlers.
  $default = array_keys($handlers, 'default output handler');
  foreach ($default as $key) {
    unset($handlers[$key]);
  }

  // We can also safely ignore zlib output handlers, if we remember to
  // disable compression.
  if ($zlib = array_keys($handlers, 'zlib output compression')) {
    foreach ($zlib as $key) {
      unset($handlers[$key]);
    }
    ini_set('zlib.output_compression', 'Off');
  }

  // If there are any unknown handlers left, we cannot safely set the
  // Content-Length.
  if (empty($handlers)) {
    $size = strlen($content);
    header("Content-Length: {$size}");
  }

  // In any case, we can always tell the client to close the connection.
  header("Connection: close");
  return $content;
}