public function containsURLs()
  {
    PHPCrawlerBenchmark::start("checking_for_urls_in_cache");
    
    $Result = $this->PDO->query("SELECT id FROM urls WHERE processed = 0 OR in_process = 1 LIMIT 1;");
    
    $has_columns = $Result->fetchColumn();
    
    $Result->closeCursor();
    
    PHPCrawlerBenchmark::stop("checking_for_urls_in_cache");
    
    if ($has_columns != false)
    {
      return true;
    }
    else return false;
  }
public function containsURLs()
  {
    PHPCrawlerBenchmark::start("checking_for_urls_in_cache");
    
    $Result = $this->PDO->query("SELECT id FROM urls WHERE processed = 0 OR in_process = 1 LIMIT 1;");
    
    $has_columns = $Result->fetchColumn();
    
    $Result->closeCursor();
    
    PHPCrawlerBenchmark::stop("checking_for_urls_in_cache");
    
    if ($has_columns != false)
    {
      return true;
    }
    else return false;
  }
public function containsURLs ( ) { PHPCrawlerBenchmark :: start ( "checking_for_urls_in_cache" ) ; $ Result = $ this -> PDO -> query ( "SELECT id FROM urls WHERE processed = 0 OR in_process = 1 LIMIT 1;" ) ; $ has_columns = $ Result -> fetchColumn ( ) ; $ Result -> closeCursor ( ) ; PHPCrawlerBenchmark :: stop ( "checking_for_urls_in_cache" ) ; if ( $ has_columns != false ) { return true ; } else return false ; }
Checks whether there are URLs left in the cache that should be processed or not.

@return bool
Checks whether there are URLs left in the cache that should be processed or not .