[wp-trac] [WordPress Trac] #42811: Run the PHP 5.2 Travis job with the MySQL Extension

[WordPress Trac]

#42811: Run the PHP 5.2 Travis job with the MySQL Extension
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 Reporter:  dd32              |      Owner:
     Type:  defect (bug)      |     Status:  new
 Priority:  normal            |  Milestone:  Awaiting Review
Component:  Build/Test Tools  |    Version:
 Severity:  normal            |   Keywords:  has-patch
  Focuses:                    |
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 I just noticed that the PHP 5.2 job is running with MySQLi (which I didn't
 even realise was possible).

 That ultimately means we have no automated testing which is testing the
 `mysqli_*` functions in `$wpdb` which is used for PHP 5.2~5.4 by default.

 The attached patch uses `WP_USE_EXT_MYSQL` to force it to use the MySQL
 extension for the PHP 5.2 job, I've tested this on [https://travis-
 ci.org/dd32/wordpress-develop/jobs/312272686 my own travis account] and it
 passes as expected, with the only change being an additional skipped test
 (which requires mysqli).

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Ticket URL: <https://core.trac.wordpress.org/ticket/42811>
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