/* TrackBack Counter
 	cogdogblog
 	http://cogdogblog.com/alan/archives/000097.html
 	  
	The script will walk the Trackback XML files (tb_rss/*.xml)
	using the filename (*) to identify the item ID, and
	counting ITEM tags in the XML to get a proper count
*/

function trackbackCount($filetrack) {
/* &ltg;tiphat> http://www.movabletype.org/trackback/archives/000668.html </tiphat>
	Slightly modified from original to simply (use ++ for increment,
	un-needed else statement)
	
	function expects path to .xml file to be counted as input param
*/
	
  $numero = 0;
  if (file_exists($filetrack)) {
	$fichero = "$filetrack";
		$fxml = fopen( $fichero,"r");
		while (!feof($fxml)) {
			$xmlreg = fgets($fxml, 4096);
			$item = substr($xmlreg,0,6);
			if ($item == "<item>") $numero++;
		}
		fclose($fxml);    	    
  }
  return $numero;
}

// relative path to directory for Trackback XML files
$tb_dir = "../tb_rss";

// try and open the directory for reading file names
if ($handle = opendir($tb_dir)) {
	
	// array to hold data file names
	$tb_files = array();

	// read in file names to array, skip the directory
	// items
	while (($file = readdir($handle))!==false)  {
		if ( $file != "." && $file != "..") {
			$tb_files[] = $file;
		}
	}
	closedir($handle);
	
	// walk the XMl files, count pings, and update
	foreach ($tb_files as $item) {		
			
		// extract the TB id number from the file name (drop the ".xml")
		$pk = substr($item, 0, -4);

		// count the pings
		$tb_count = trackbackCount("$tb_dir/$item");
	
		// feedback just for testing purposes
		echo "tb id#$pk (count=$tb_count)\n";
	}

}