Super Simple fopen question

[Rifts]

Using:

 $file = fopen("file1.txt", "r") or exit("Unable to open file!");

 

 

I have multiple files (file1.txt, file2.txt, etc.) how can I edit this so it just takes ANY file that ends in .txt and opens it?

[dezkit]

<?php
foreach (glob("/*.txt") as $filename) {
     $file = fopen($filename, "r") or exit("Unable to open file!");
}
?>

[Rifts]

that does nothing