PHP Zip function doesn't work (Debian, Apache, PHP5) - php

Question

I've installed apache on a debian server and added php. But if i try to create a .zip file it doesn't work. There's no error message but the .zip file doesn't get created.
Code:
<?php
$zip = new ZipArchive;
$res = $zip->open('test.zip', ZipArchive::CREATE);
$zip->addFile('Banner1.png', 'Banner1.png');
$zip->close();
?>

Answer 1

Most likely, the user that php is running as (on debian, www-data by default) doesn't have writing permissions to the directory. Check the result of the various functions like this:
<?php
$zip = new ZipArchive();
$res = $zip->open('test.zip', ZipArchive::CREATE);
if (!$res){
echo 'Error while creating zip file: ' . $zip->getStatusString();
exit();
}
if (! $zip->addFile('Banner1.png', 'Banner1.png')) {
echo 'Error while adding Banner1: ' . $zip->getStatusString();
exit();
}
if (! $zip->close()) {
echo 'Error while closing: ' . $zip->getStatusString();
exit();
}
On a debian with default configuraiton, you can configure permissions with chown and chmod. For example, to allow the webserver to write to that directory, try
sudo chown www-data /path/to/directory/with/php/file
sudo chmod u+rwx /path/to/directory/with/php/file

Answer 2

Sûre your $res is good ?
if ($res === TRUE) {
echo 'ok';
$zip->addFile('Banner1.png', 'Banner1.png');
$zip->close();
} else {
echo 'failed, code:' . $res;
}