How to use ::setMaxDepth for RecursiveIteratorIterator?
Pergunta
I'm using this script but I would like to specify a max depth to the recursive function. I don't know how to use it, I always get an error. How should I use the ::setMaxDepth here?
public function countFiles($path)
{
global $file_count;
$depth=0;
$ite=new RecursiveDirectoryIterator($path);
$file_count=0;
foreach (new RecursiveIteratorIterator($ite) as $filename=>$cur) :
$file_count++;
$files[] = $filename;
endforeach;
return $file_count;
}
Solução
You need to call setMaxDepth()
on an instance of RecursiveIteratorIterator
. This is difficult when you construct the RecursiveIteratorIterator
within the foreach
statement. Instead, use a variable to hold it.
$files = new RecursiveIteratorIterator($ite);
$files->setMaxDepth($depth);
foreach ($files as $filename => $cur) {
$file_count++;
$files_list[] = $filename;
}
However note that the use of a loop is not required here (unless your code does other things that you have removed in the example above). You can get the count of files with iterator_count()
.
function countFiles($path)
{
$depth = 1;
$ite = new RecursiveDirectoryIterator($path, RecursiveDirectoryIterator::SKIP_DOTS);
$files = new RecursiveIteratorIterator($ite);
$files->setMaxDepth($depth);
return iterator_count($files);
}
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