php getUser php handle opendir while false file readdir handle if preg

1
2
3
4
5
6
7
8
9
<?php
//getUser.php
$handle = opendir('.');
while (false !== ($file = readdir($handle)))
if(preg_match('/\.txt$/', $file) && file_get_contents($file) == $_GET['key']) {
echo reset(explode('.', $file));
break;
}
closedir($handle);