I download my back file with .zip
format using this PHP class:
public function download($file)
{
$filename = $this->dir . $file;
$fp = fopen($filename, "rb");
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: public");
header("Content-Description: File Transfer");
header("Content-type: application/octet-stream");
header("Content-length: " . filesize($filename));
header("Content-disposition: attachment;filename = " . $file . "");
header("Content-Transfer-Encoding: binary");
readfile($filename);
ob_end_clean();
die(fpassthru($fp));
fclose($fp);
}
this worked and i downloaded .zip
file successful. but when i need to extract .zip
file using winrar i see this error:
db-backup-2014-11-15_14-18-48-12.zip: The archive is either in unknown format or damaged
.
in download :
in open:
in extract :
NOTE: my original file worked and fine extracted using winrar.
i think my problem is CRC32 = 0000000 (in screen one) because in original file is have a true value.
how do fix this problem ?!
Your ZIP file is most likely corrupted because your PHP script contains white space after closing ?>
tag which pollutes ZIP content. To solve this, remove PHP closing tag ?>
from your script that function download()
is part of (also check if you do not have leading white-spaces, placed before opening <?php
tag too) and your issue should be gone. If you include other scripts, check them for spaces too. In general ?>
tag should not be used, unless you are sure you need it it for known reason (which is very rare case).
Try this download function instead :
<?php
public function download($file) {
ob_end_clean();
$filename = $this->dir . $file;
header("Content-Type: application/zip");
header("Content-Disposition: attachment; filename=". pathinfo($filename , PATHINFO_BASENAME));
header("Content-Length: " . filesize($filename ));
readfile($fileName);
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.