function print_pdf_cache_clean in Printer, email and PDF versions 7.2

Removes pdf files for nodes/paths if they are older than the lifetime.

1 call to print_pdf_cache_clean()

print_pdf_cron in print_pdf/print_pdf.module

Implements hook_cron().

File

print_pdf/print_pdf.module, line 367

Displays Printer-friendly versions of Drupal pages.

Code

function print_pdf_cache_clean() {
  $lifetime = variable_get('print_pdf_cache_lifetime', PRINT_PDF_CACHE_LIFETIME_DEFAULT);
  if ($lifetime > 0) {
    $files = file_scan_directory(print_pdf_cache_dir(), '!\\d+\\.pdf$!');
    foreach ($files as $file) {

      // For all files in the cache directory, see when they were last accessed.
      $result = db_query("SELECT timestamp FROM {print_pdf_page_counter} WHERE path = :path", array(
        ':path' => 'node/' . $file->name,
      ))
        ->fetchField();

      // Keep the file only if last access was within the cache max life value.
      if ($result === FALSE || $result + $lifetime < REQUEST_TIME) {
        print_pdf_cache_delete($file->name);
      }
    }
  }
}