Add exams from exam58 to exam98

exam82/listingFiles.php

@@ -0,0 +1,16 @@
+<?php
+
+$directory = 'files';
+
+if ($handle = opendir($directory.'/')){
+    echo 'Looking inside \'' . $directory . '\': <br>';
+
+    while($file = readdir($handle)){
+        if ($file != '.' && $file != '..') {
+            echo '<a href="'.$directory.'/'.$file.'">'.$file.'</a><br>';
+        }
+    }
+
+}
+
+?>