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Editorial Team
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Asked: 2026-06-10T23:32:11+00:00

The following command returns true and uploads the text XML file to the FTP

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The following command returns true and uploads the text XML file to the FTP server:

if (ftp_put($this->ftpConnectionId, $this->remoteXmlFileName, $this->localXmlFileName, FTP_ASCII)) {

However, when I try to upload a .zip file intead of a text XML file, it still returns true but does not upload the file:

if (ftp_put($this->ftpConnectionId, $this->remoteXmlFileName, $this->localXmlFileName, FTP_BINARY)) {

I found that if I simply rename the zip file to “.xml”, it WILL upload the file but the .zip file is corrupted.

But if I rename the zip file to “.zip.xml” it again returns true but does not upload the file.

What could be the reasons for this odd behavior?

Additional Info:

A zip file can be uploaded via FileZilla no problem with the same account.

I also am specifing:

ftp_pasv($this->ftpConnectionId, true);
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1 Answer

  1. Editorial Team

    A zipfile is a binary file. That’s probably why uploading it as .xml corrupts the file. Try specifying FTP_BINARY instead of FTP_ASCII. FTP_BINARY will work for ascii files too, but not vice versa, so you can better always use FTP_BINARY than always FTP_ASCII.

    The ftp server may reject the file for many reasons, so it may allow the upload at first, but then not save the file. The ascii/binary problem may be one, but also some file extensions may be blacklisted, or the file could be too big. The latter is unlikely, though, since uploading the zipfile with a different extensions worked for you.

    I think the ftp server actively ignores zip files.

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