How to use RegexIterator in PHP

I have yet to find a good example of how to use the php RegexIterator to recursively traverse a directory.

The end result would be I want to specify a directory and find all files in it with some given extensions. Say for example only html/php extensions. Furthermore, I want to filter out folders such of the type .Trash-0, .Trash-500 etc.

<?php 
$Directory = new RecursiveDirectoryIterator("/var/www/dev/");
$It = new RecursiveIteratorIterator($Directory);
$Regex = new RegexIterator($It,'/^.+\.php$/i',RecursiveRegexIterator::GET_MATCH);

foreach($Regex as $v){
    echo $value."<br/>";
}
?>

Is what I have so far but result in : Fatal error: Uncaught exception 'UnexpectedValueException' with message 'RecursiveDirectoryIterator::__construct(/media/hdmovies1/.Trash-0)

Any suggestions?