How to recursively display folders and sub folders with specific file types only using PHP5 RecursiveDirectoryIterator class

Hi I am trying to get RecursiveDirectoryIterator class using a extension on the FilterIterator to work but for some reason it is iterating on the root directory only.

my code is this.

    class fileTypeFilter extends FilterIterator
{
    public function __construct($path)
    {
        parent::__construct(new RecursiveDirectoryIterator($path));
    }  
    public function accept()
    {
        $file = $this->getInnerIterator()->current();
        return preg_match('/\.php/i', $file->getFilename());
    }    

}

$it = new RecursiveDirect开发者_如何学PythonoryIterator('./');
$it = new fileTypeFilter($it);

foreach ($it as $file)
{
    echo $file;
}

my directory structure is something like this.

-Dir1
--file1.php
--file2.php
-Dir2
--file1.php

etc etc

But as I said before the class is not recursively iterating over the entire directory structure and is only looking at the root.

Question is, how do use a basic RescursiveDirectoryIterator to display folders and then run the FilterIterator to only show the php files in those directorys?

Cheers

The FilterIterator should accept another iterator through its constructor. In order for the automatic recursion to happen, you need to use a RecursiveIteratorIterator to iterate over the RecursiveIterator. You don't need to, but if you don't, then the burden of calling hasChildren() and getChildren() etc... is on you.

Here's a sample. I didn't bother to accept any arguments in the constructor for FileTypeFilterIterator, although that would be a nice addition if you wanted to be able to alter the regex. But, otherwise, you don't need to define a constructor.

$it = new FileTypeFilterIterator (
    new RecursiveIteratorIterator(
        new RecursiveDirectoryIterator($path),
        RecursiveIteratorIterator::SELF_FIRST
    )
);


class FileTypeFilterIterator extends FilterIterator
{
    public function __construct(Iterator $iter)
    {
        parent::__construct($iter);
    }
    public function accept()
    {
        $file = $this->getInnerIterator()->current();
        return preg_match('/\.php/i', $file->getFilename());
    }

}
foreach($it as $name => $object){
    echo "$name\n";
}

Btw, in this case, you might as well just use RegexIterator instead of extending FilterIterator.