php遍历删除整个目录及文件的方法

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<?php

function cleanup_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);

}

cleanup_directory('c:\\wamp\\junk');

?>