Zip File Functions (Read Only Access) Opcje

[pajda]

mam postawionego php i mi dziala
i potrzebuje miec funkcje do obslugi zipow
[php:1:ac22e84f11]<?php
$zip = zip_open("test2.zip");

if ($zip) {

while ($zip_entry = zip_read($zip)) {
echo "Name: " . zip_entry_name($zip_entry) . "n";
echo "Actual Filesize: " . zip_entry_filesize($zip_entry) . "n";
echo "Compressed Size: " . zip_entry_compressedsize($zip_entry) . "n";
echo "Compression Method: " . zip_entry_compressionmethod($zip_entry) . "n";

if (zip_entry_open($zip, $zip_entry, "r")) {
echo "File Contents:n";
$buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
echo "$bufn";

zip_entry_close($zip_entry);
}
echo "n";

}

zip_close($zip);

}

?>[/php:1:ac22e84f11]

jak wkleje taki skrypt to dostaje
Fatal error: Call to undefined function: zip_open() in c:program filesapache groupapachehtdocstestzip.php on line 2

co mam zrobic i jak zeby doinstalowac te funkcje
z gory dzieki za pomoc