[cgiwrap-users] Skript with root privileges??

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Hello,
the configuration of our cgiwrap-3.9 installation is:
./configure --with-perl=3D/usr/bin/perl  --with-httpd-user=3Dwww \
                --with-cgi-dir=3Dpublic_html/cgi-bin --with-wall \
                --with-install-dir=3D/usr/local/apache/cgi-bin \
                --with-check-shell  --with-minimum-uid=3D20 \
                --without-redirect-stderr --without-logging-file \
                --with-rlimit-core=3D0 --with-rlimit-cpu=3D30

Calling following user=B4s HTML-Page, which contains PHP-lines:
<html>
<head>
<title>owner.php</title>
</head>
<body>
<?php
$text           =3D "Hello";
$datei          =3D "owner.txt";

@unlink($datei);

$fp             =3D fopen ($textfile, "w");
fwrite($fp,$text);
fclose($fp);

$fileowneruid   =3D fileowner($textfile);
$fileownerarray =3D posix_getpwuid($fileowneruid);
$fileowner      =3D $fileownerarray['name'];

echo "owner is $fileowner";
?>
</body>
</html>

the output is:owner is root 
and the file owner.txt doesn=B4t exist.
If a file owner.txt existed before, even with ownership root, it had 
been deleted.
I have to mention, that the owner of the HTML-Document isn=B4t root. 
It=B4s a user's document. However, the owner of the program cgiwrap 
is root.

Changing the line 
$datei  =3D "owner.txt"   to 
$datei =3D "./owner.txt"
the skript works correct.

What=B4s wrong?

Yours,
Elfriede Heilmeier