Find and optionally delete dita files that are not referenced from the ditamap.

findOrphans.php

<?php
/**
 * Find and optionally delete files that are not referenced from the ditamap as a topicref.
 * Disclaimer: Not smart enough to look for keydef yet
 */

// Set this to the relative (to where you're executing script from) or absolute path
$dir_base = 'base/path/to/files/';
// Set this to directory name where dita files exist
$dir_read = 'user';
// Set this to relative or absolute path of ditamap
$ditamap = $dir_base.'your.ditamap';

$mapContents = file_get_contents($ditamap);

$sxe = new SimpleXMLElement($mapContents);

$result = $sxe->xpath('//@href');
echo "Files referenced in ditamap: ".count($result)."\n";
$actualFiles = scandir($dir_base.$dir_read);
echo "Files in directory: ".count($actualFiles)."\n";

$filesInMap = array();
while(list( , $node) = each($result)) {
        $filesInMap[] = $node;
}

echo "\nFiles in directory but not in map: \n";
while(list( , $file) = each($actualFiles)){
        if($file!='..'&&$file!='.'&&$file!='.svn'){
		if(!array_search($dir_read."/".$file, $filesInMap)){
			echo $file."\n";
			//unlink($dir_base.$dir_read."/".$file);
		}
	}
}

This would be a lifesaver for me, but how do I actually use it? I don't use any code, but I'm not afraid to try. Thanks.