Clean orphaned files processwire. code from Ryan Cramer

clean-files.php

<pre><?php
ini_set('max_execution_time', 60*5); // 5 minutes, increase as needed
include("./index.php"); 
$dir = new DirectoryIterator(wire('config')->paths->files); 
 
foreach($dir as $file) {
  if($file->isDot() || !$file->isDir()) continue; 
  $id = $file->getFilename();
  if(!ctype_digit("$id")) continue;  
  $page = wire('pages')->get((int) $id);
  if(!$page->id) {
    echo "Orphaned directory: " . wire('config')->urls->files . "$id/" . $file->getBasename() . "\n";
    continue; 
  }
  // determine which files are valid for the page
  $valid = array();
  foreach($page->template->fieldgroup as $field) {    
    if($field->type instanceof FieldtypeFile) {
      foreach($page->get($field->name) as $file) {
        $valid[] = $file->basename; 
        if($field->type instanceof FieldtypeImage) {
          foreach($file->getVariations() as $f) {
            $valid[] = $f->basename; 
          }
        }
      }
    }
  } 
  // now find all the files present on the page
  // identify those that are not part of our $valid array
  $d = new DirectoryIterator($page->filesManager->path); 
  foreach($d as $f) {
    if($f->isDot() || !$f->isFile()) continue; 
    if(!in_array($f->getFilename(), $valid)) {
      echo "Orphaned file: " . wire('config')->urls->files . "$id/" . $f->getBasename() . "\n";                               
      // unlink($f->getPathname()); 
    }
  }
  wire('pages')->uncache($page); // just in case we need the memory
}