zipArchive open error in PHP

Question

Cannot create zip archive in PHP, always returns ZIPARCHIVE::ER_MULTIDISK

$fileName=$_SERVER['DOCUMENT_ROOT'].'/temp/temp.zip';
$zip = new ZipArchive();
$err=$zip->open($fileName,ZipArchive::CREATE);
$zipFileFunctionsErrors = array(0=>'OK',
        ZIPARCHIVE::ER_MULTIDISK => 'Multi-disk zip archives not supported.',
        ...,
        ...
);
echo $zipFileFunctionsErrors[$err];
$zip->addFromString('empty.txt', '');
$zip->close();

Outputs

Multi-disk zip archives not supported

zip file didn't created

on local machine code works good

Answer 1

I think that your issue has to be something with the php version, sounds like it's this: (from php.net comments):

Some older PHP versions used to return false if zip_open failed, and newer versions return the number of error (as integer), so instead of this:

$zip = zip_open($zip_file);
if ($zip) {
  // consider zip file opened successfully
}

use this:

$zip = zip_open($zip_file);
if (is_resource($zip)) {
  // consider zip file opened successfully
}

Sounds like you are getting the first non numeric index from the array, maybe '1' as 'true' and that's why it's displaying the element '1' on your errors array