[php]
<?php
$username = $_SERVER['REMOTE_USER'];

$homedir = "/home/$username";

$file_to_delete = basename("$userfile");
unlink ($homedir/$file_to_delete);

$fp = fopen("/home/logging/filedelete.log","+a");
$logstring = "$username $homedir $file_to_delete";
fwrite ($fp, $logstring);
fclose($fp);

echo "$file_to_delete has been deleted!";
?>
[/php]
在$_SERVER数组中有$_SERVER['REMOTE_USER']这个值吗？
翻遍手册没看到。