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Removing a Directory and Its Contents in PHP
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Removing a Directory and Its Contents in PHP

InfinityCoder December 26, 2016

You want to remove a directory and all of its contents, including subdirectories and their contents.

Use RecursiveDirectoryIterator and RecursiveIteratorIterator, specifying that children (files and subdirectories) should be listed before their parents:

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function obliterate_directory($dir) {
   $iter = new RecursiveDirectoryIterator($dir);
   foreach (new RecursiveIteratorIterator($iter,
              RecursiveIteratorIterator::CHILD_FIRST) as $f) {
      if ($f->isDir()) {
          rmdir($f->getPathname());
      } else {
          unlink($f->getPathname());
      }
   }
   rmdir($dir);
}
 
obliterate_directory('/tmp/junk');

Removing files, obviously, can be dangerous.

Because PHP’s built-in directory removal function, rmdir(), works only on empty directories, and unlink() can’t accept shell wildcards, the RecursiveIteratorIterator must be told to provide children befor parents with its CHILD_FIRST constant.

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