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Editorial Team
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Asked: 2026-05-23T16:17:13+00:00

My PHP script is outputting the contents of a .sql file, after it has

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My PHP script is outputting the contents of a .sql file, after it has been called by a POST request from my Delphi Desktop Client.

Here is what is happening:

  1. My Desktop Client sends a POST request to my PHP Script.
  2. The Script then calls mysqldump and generates a file – xdb_backup.sql
  3. The Script then include "xdb_backup.sql"; which will print and return it to the Desktop Client, whereafter it deletes the SQL file.

The problem is, that the size of the SQL file can vary (for testing, I generated one that is 6 mb). I would like my desktop client to be able to show the progress, however the PHP script does not expose it’s size, so I have no Progressbar.Max value to assign.

How can I make my PHP script let the Client know how big it is before the whole thing is over ?

Note: Downloading the SQL file is not an option, as the script has to destroy it. 🙂

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1 Answer

  1. Editorial Team

    You would do

    $fsize = filesize($file_path);

    where $file_path will be path to the generated file xdb_backup.sql,

    to get the filesize in server and return headers with the following line attached.

    header("Content-Length: " . $fsize);

    Take a look at http://www.hotscripts.com/forums/php/47774-download-script-not-sending-file-size-header-corrupt-files-since-using-remote-file-server.html which explains a download php script.

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