Php ziparchive ошибка

<?php
$zip = new ZipArchive();
$opened = $zip->open( $zipFileName, ZIPARCHIVE::OVERWRITE );
if( $opened !== true ){
die("cannot open {$zipFileName} for writing.");
}
$zip->addFromString( $name, $contents );
$zip->close();
?>

Now, with php 5.2.8, it does not work and gives this warning:

Warning: ZipArchive::addFromString() [ziparchive.addfromstring]: Invalid or unitialized Zip object in [myfile] on line [myline]

To fix this, you must specify the flags as create or overwrite.

<?php
$zip = new ZipArchive();
$opened = $zip->open( $zipFileName, ZIPARCHIVE::CREATE | ZIPARCHIVE::OVERWRITE );
if( $opened !== true ){
die("cannot open {$zipFileName} for writing.");
}
$zip->addFromString( $name, $contents );
$zip->close();
?>

When googling for the error message I found a lot of people that had it but couldn't figure out why they were getting it.
I hope this helps someone.

case

1:
return 'Multi-disk zip archives not supported';

case

2:
return 'Renaming temporary file failed';

case

3:
return 'Closing zip archive failed';

case

4:
return 'Seek error';

case

5:
return 'Read error';

case

6:
return 'Write error';

case

7:
return 'CRC error';

case

8:
return 'Containing zip archive was closed';

case

9:
return 'No such file';

case

10:
return 'File already exists';

case

11:
return 'Can\'t open file';

case

12:
return 'Failure to create temporary file';

case

13:
return 'Zlib error';

case

14:
return 'Malloc failure';

case

15:
return 'Entry has been changed';

case

16:
return 'Compression method not supported';

case

17:
return 'Premature EOF';

case

18:
return 'Invalid argument';

case

19:
return 'Not a zip archive';

case

20:
return 'Internal error';

case

21:
return 'Zip archive inconsistent';

case

22:
return 'Can\'t remove file';

case

23:
return 'Entry has been deleted';

default:
return

'An unknown error has occurred('.intval($code).')';
}
}

public function

isDir($path)
{
return substr($path,-1) == '/';
}

public function

// Use ZipArchive::OVERWRITE|ZipArchive::CREATE

ZIPARCHIVE::ER_EXISTS - 10
ZIPARCHIVE::ER_INCONS - 21
ZIPARCHIVE::ER_INVAL - 18
ZIPARCHIVE::ER_MEMORY - 14
ZIPARCHIVE::ER_NOENT - 9
ZIPARCHIVE::ER_NOZIP - 19
ZIPARCHIVE::ER_OPEN - 11
ZIPARCHIVE::ER_READ - 5
ZIPARCHIVE::ER_SEEK - 4

There are a couple of PHP userland libraries available on GitHub that can stream ZIP file content out to the user as soon as any data is written to the relevant classes.

cubiclesoft/php-zipstreamwriter
maennchen/ZipStream-PHP

Maybe a future version of ZipArchive will offer something similar.

ZIPARCHIVE::CREATE

It will overwrite existing archives and at the same time create new ones if they don't already exist.

ZIPARCHIVE::OVERWRITE won't work for both of these scenarios.

(PHP version 5.4.4)

Instead make sure you collect the return value of ZipArchive::close(). If it is false... it didn't work.

if (

$res === TRUE) {
//CODE GOES HERE$zip->close();
} else {
switch($res){
case ZipArchive::ER_EXISTS:
$ErrMsg = "File already exists.";
break;

case

ZipArchive::ER_INCONS:
$ErrMsg = "Zip archive inconsistent.";
break;

case

ZipArchive::ER_MEMORY:
$ErrMsg = "Malloc failure.";
break;

case

ZipArchive::ER_NOENT:
$ErrMsg = "No such file.";
break;

case

ZipArchive::ER_NOZIP:
$ErrMsg = "Not a zip archive.";
break;

case

ZipArchive::ER_OPEN:
$ErrMsg = "Can't open file.";
break;

case

ZipArchive::ER_READ:
$ErrMsg = "Read error.";
break;

case

ZipArchive::ER_SEEK:
$ErrMsg = "Seek error.";
break;

default:

$ErrMsg = "Unknow (Code $rOpen)";
break;

}
die(

In fact, the existing file will be deleted before PHP saves the zip archive on disk.

PHP takes these steps to finish zipping:

1. When ZipArchive::open('xx.zip') is called
If 'xx.zip' exists and is a zip archive, it will be opened and read as a temporary zip file,
If the file does not exist, and ZipArchive::CREATE is applied, php will create a temporary empty zip file
In these cases, ZipArchive::open() returns true, otherwise it returns an integer error code.
2. Adds file(s) to the temporary zip file when methods such as addFile(), addFromString() are called.
3. Deletes the existing file before saving the temporary zip file on disk.
4. Save the temporary zip file on disk
5. Closes the active archive when ZipArchive::close() is called or at the end of the script

Since PHP does NOT delete the existing file before saving the zip archive on disk, you should use unset() to delete it if you want to zip that file's containing folder and save the zip archive in that folder, otherwise you will get a larger and larger zip archive everytime you refresh the page.

<?php
$archive = new \ZipArchive();
$result = $archive->open('some.file.zip');$message = match ($result) {
\ZipArchive::ER_MULTIDISK => 'Multi-disk zip archives not supported',
\ZipArchive::ER_RENAME => 'Renaming temporary file failed',
\ZipArchive::ER_CLOSE => 'Closing zip archive failed',
\ZipArchive::ER_SEEK => 'Seek error',
\ZipArchive::ER_READ => 'Read error',
\ZipArchive::ER_WRITE => 'Write error',
\ZipArchive::ER_CRC => 'CRC error',
\ZipArchive::ER_ZIPCLOSED => 'Containing zip archive was closed',
\ZipArchive::ER_NOENT => 'No such file',
\ZipArchive::ER_EXISTS => 'File already exists',
\ZipArchive::ER_OPEN => 'Can\'t open file',
\ZipArchive::ER_TMPOPEN => 'Failure to create temporary file',
\ZipArchive::ER_ZLIB => 'Zlib error',
\ZipArchive::ER_MEMORY => 'Malloc failure',
\ZipArchive::ER_CHANGED => 'Entry has been changed',
\ZipArchive::ER_COMPNOTSUPP => 'Compression method not supported',
\ZipArchive::ER_EOF => 'Premature EOF',
\ZipArchive::ER_INVAL => 'Invalid argument',
\ZipArchive::ER_NOZIP => 'Not a zip archive',
\ZipArchive::ER_INTERNAL => 'Internal error',
\ZipArchive::ER_INCONS => 'Zip archive inconsistent',
\ZipArchive::ER_REMOVE => 'Can\'t remove file',
\ZipArchive::ER_DELETED => 'Entry has been deleted',
// \ZipArchive::ER_OK => 'No error',
default => 'No error',
};
?>

e.g.

$zipfilename=$dir.DIRECTORY_SEPARATOR."test.zip";
$zippedFile = new ZipArchive;
$zippedFile->open($zipfilename);

echo "<LI>".$zippedFile->getFromName("mpdf-8.0.7/.gitignore")."</LI><HR>";

echo "<LI>Loaded $zipfilename ".$zippedFile->numFiles;
for($i = 0; $i < $zippedFile->numFiles; $i++) {
$fn=$zippedFile->getNameIndex($i);
echo "<LI>$i: ".$fn;

if ( strcmp(substr($fn, -1), DIRECTORY_SEPARATOR )==0 ) echo "... directory";
else echo "... ".strlen($zippedFile->getFromIndex($i))." bytes";

}
$zippedFile->close();

while ($file = readdir($dir)) { ... $zip->addFile($file) }

Note that $zip->addFile($file) will only work in the current directory if your at the root. You will need to add the correct path to that $file string variable to have the full file name like ...

$zip->addFile($dir . DIRECTORY_SEPARATOR . $file); will work.

This may identify why you may get a read error when closing the file.

Enjoy.

<?php

$file = tempnam("tmp", "zip");
$zip = new ZipArchive();
// Zip will open and overwrite the file, rather than try to read it.

$zip->open($file, ZipArchive::OVERWRITE);
$zip->close();
// Stream the file to the client

header("Content-Type: application/zip");

header("Content-Length: " . filesize($file));

header("Content-Disposition: attachment; filename=\"a_zip_file.zip\"");

readfile($file);
unlink($file);

?>

Because this is a potential security weakness if on a public viewable folder, I'd recommend moving the folder so that it is no longer within public_html. You can then use readfile() to output the archive to the browser, with some HTTP headers to tell the browser it is a zip file.

possibly related bugs 40873, 8714:

1. it was not an OS limit, because it worked when called from windows via samba on the same file at the same place

2. it wasn't working under 32bit linux

with php 5.3.0 the issue seems to be resolved.

I made a little script about checking content and "secure repacking"

*/

$res = $zip->open($zip_file, ZipArchive::CREATE);

// you may get false

Try this instead, it should work :

$res = $zip->open($zip_file, ZIPARCHIVE::OVERWRITE);