Examples
Read a file from an archive to a variable.
A warning is printed automatically in case of a CRC32 mismatch, which we capture, so we can print our own error message.
<?php
$zip = new ZipArchive();
if ($zip->open('archive.zip')) {
$fp = $zip->getStream('myfile.txt'); //file inside archive
if(!$fp)
die("Error: can't get stream to zipped file");
$stat = $zip->statName('myfile.txt');
$buf = ""; //file buffer
ob_start(); //to capture CRC error message
while (!feof($fp)) {
$buf .= fread($fp, 2048); //reading more than 2156 bytes seems to disable internal CRC32 verification (bug?)
}
$s = ob_get_contents();
ob_end_clean();
if(stripos($s, "CRC error") != FALSE){
echo 'CRC32 mismatch, current ';
printf("%08X", crc32($buf)); //current CRC
echo ', expected ';
printf("%08X", $stat['crc']); //expected CRC
}
fclose($fp);
$zip->close();
//Done, unpacked file is stored in $buf
}
?>
To create a corrupt file, change a byte in a zip file using a hex editor.
The ZipArchive class
Introduction
A file archive, compressed with Zip.
Class synopsis
ZipArchive
{
/* Properties */
/* Methods */
}Properties
- status
-
Status of the Zip Archive
- statusSys
-
System status of the Zip Archive
- numFiles
-
Number of files in archive
- filename
-
File name in the file system
- comment
-
Comment for the archive
Table of Contents
- ZipArchive::addEmptyDir — Add a new directory
- ZipArchive::addFile — Adds a file to a ZIP archive from the given path
- ZipArchive::addFromString — Add a file to a ZIP archive using its contents
- ZipArchive::close — Close the active archive (opened or newly created)
- ZipArchive::deleteIndex — delete an entry in the archive using its index
- ZipArchive::deleteName — delete an entry in the archive using its name
- ZipArchive::extractTo — Extract the archive contents
- ZipArchive::getArchiveComment — Returns the Zip archive comment
- ZipArchive::getCommentIndex — Returns the comment of an entry using the entry index
- ZipArchive::getCommentName — Returns the comment of an entry using the entry name
- ZipArchive::getFromIndex — Returns the entry contents using its index
- ZipArchive::getFromName — Returns the entry contents using its name
- ZipArchive::getNameIndex — Returns the name of an entry using its index
- ZipArchive::GetStatusString — Returns the status error message, system and/or zip messages
- ZipArchive::getStream — Get a file handler to the entry defined by its name (read only).
- ZipArchive::locateName — Returns the index of the entry in the archive
- ZipArchive::open — Open a ZIP file archive
- ZipArchive::renameIndex — Renames an entry defined by its index
- ZipArchive::renameName — Renames an entry defined by its name
- ZipArchive::setArchiveComment — Set the comment of a ZIP archive
- ZipArchive::setCommentIndex — Set the comment of an entry defined by its index
- ZipArchive::setCommentName — Set the comment of an entry defined by its name
- ZipArchive::statIndex — Get the details of an entry defined by its index.
- ZipArchive::statName — Get the details of an entry defined by its name.
- ZipArchive::unchangeAll — Undo all changes done in the archive
- ZipArchive::unchangeArchive — Revert all global changes done in the archive.
- ZipArchive::unchangeIndex — Revert all changes done to an entry at the given index
- ZipArchive::unchangeName — Revert all changes done to an entry with the given name.
add a note
User Contributed NotesZipArchive
hardcorevenom at gmx dot com
16-Jun-2010 12:17
16-Jun-2010 12:17