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1. drupal
   1. drupal6
   2. drupal7

Run all the enabled filters on a piece of text.

Übergabeparameter

$text The text to be filtered.

$format The format of the text to be filtered. Specify FILTER_FORMAT_DEFAULT for the default format.

$check Whether to check the $format with filter_access() first. Defaults to TRUE. Note that this will check the permissions of the current user, so you should specify $check = FALSE when viewing other people's content. When showing content that is not (yet) stored in the database (eg. upon preview), set to TRUE so the user's permissions are checked.

Code

modules/filter/filter.module, line 429

<?php
function check_markup($text, $format = FILTER_FORMAT_DEFAULT, $check = TRUE) {
  // When $check = TRUE, do an access check on $format.
  if (isset($text) && (!$check || filter_access($format))) {
    $format = filter_resolve_format($format);

    // Check for a cached version of this piece of text.
    $cache_id = $format . ':' . md5($text);
    if ($cached = cache_get($cache_id, 'cache_filter')) {
      return $cached->data;
    }

    // See if caching is allowed for this format.
    $cache = filter_format_allowcache($format);

    // Convert all Windows and Mac newlines to a single newline,
    // so filters only need to deal with one possibility.
    $text = str_replace(array("\r\n", "\r"), "\n", $text);

    // Get a complete list of filters, ordered properly.
    $filters = filter_list_format($format);

    // Give filters the chance to escape HTML-like data such as code or formulas.
    foreach ($filters as $filter) {
      $text = module_invoke($filter->module, 'filter', 'prepare', $filter->delta, $format, $text, $cache_id);
    }

    // Perform filtering.
    foreach ($filters as $filter) {
      $text = module_invoke($filter->module, 'filter', 'process', $filter->delta, $format, $text, $cache_id);
    }

    // Store in cache with a minimum expiration time of 1 day.
    if ($cache) {
      cache_set($cache_id, $text, 'cache_filter', time() + (60 * 60 * 24));
    }
  }
  else {
    $text = t('n/a');
  }

  return $text;
}
?>