[wp-trac] [WordPress Trac] #63503: Exporting in high data instances results in empty file download

[WordPress Trac]

#63503: Exporting in high data instances results in empty file download
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 Reporter:  bor0                                 |       Owner:  (none)
     Type:  defect (bug)                         |      Status:  new
 Priority:  normal                               |   Milestone:  Awaiting
                                                 |  Review
Component:  Export                               |     Version:  6.8
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch has-test-info dev-         |     Focuses:
  feedback                                       |
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Changes (by SirLouen):

 * keywords:  has-patch has-test-info => has-patch has-test-info dev-
               feedback


Comment:

 == Test Report
 === Description
 ✅This report validates that the indicated patch works as expected.

 Patch tested:
 https://core.trac.wordpress.org/attachment/ticket/63503/63503.patch

 === Environment
 - WordPress: 6.9-alpha-60093-src
 - PHP: 8.2.28
 - Server: nginx/1.27.5
 - Database: mysqli (Server: 8.4.5 / Client: mysqlnd 8.2.28)
 - Browser: Chrome 137.0.0.0
 - OS: Windows 10/11
 - Theme: Twenty Twenty 2.9
 - MU Plugins: None activated
 - Plugins:
   * Test Reports 1.2.0
   * WP Dummy Content Generator 4.0.0

 === Patch Testing Instructions
 1. Add some dummy posts
 2. Export data
 3. Save the xml file
 4. Apply the patch
 5. Export data again
 6. Compare resulting XML file with the previous XML saved file

 === Expected Result

 - Both XML files are identical (except for timestamps)

 === Actual Results
 1.  ✅ Issue resolved with patch.

 === Additional Notes
 - ✅ Passing `export` group unit-tests (although they are a little
 Spartan, ngl)

 - @bor0 suggestion: the patch feels pretty straightforward, but it is a
 good idea to add a GB PR with your patch, just to double-check that is
 passing all the CI tasks and ready to ship.

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Ticket URL: <https://core.trac.wordpress.org/ticket/63503#comment:9>
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