Filter files in a directory by extension

[system]

Hi there,
HELP!!!
???
I am trying to filter some files in my site directories so i can save the .js files and .css files in two separate arrays. The thing is its not displaying. I got it to show me something when i removed the closing bracket for " foreach($directories as $dirs){ " to the spot before else.

Below is the code:
PLEASE HELP!!!

function get_system_dir_paths($dir){
$scripts = array();
$styles = array();

if(is_dir($dir)){
	$directories = scandir($dir);
	
	foreach($directories as $dirs){
		if(is_dir($dirs)){
			 if($dirs === '..' || $dirs === '.') continue;
			 else{
				 $files = scandir($dirs);
			}
		}
	}

//Adds the correct file type to the correct array
	foreach($files as $file){

		if(strpos($file, '.js')){ //if .js in file then add to $scripts
			$scripts[] .= $files;
		}
		else if(strpos($file, '.css')){ //if .css in file then add to $styles
			$styles[] .= $files;
		}
		else
		continue;

	}

}

else{
print “NO DIRECTIOR FOUND”;
}

//$files = array_unique($files);
foreach($scripts as $script){
echo $script ."
";
}

	echo "<br />";
	
	foreach ($styles as $style){
		echo $style . "<br />";
	}

}
?>