[wp-trac] [WordPress Trac] #27934: $wp_plugin_paths is null in plugin_basename

[WordPress Trac]

#27934: $wp_plugin_paths is null in plugin_basename
--------------------------+-----------------------------
 Reporter:  dsawardekar   |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Plugins       |    Version:  3.9
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 While upgrading to 3.9.0 I noticed a few PHP notices in plugin.php. The
 upgrade was successful but I have strict error reporting turned on in
 PHP that showed up these errors.

 {{{
 Warning: Invalid argument supplied for foreach() in /var/www/wp-dev/wp-
 includes/plugin.php on line 623
 }}}


 I'm using PHP 5.5.3 on Ubuntu, with individually symlinked plugins in
 `wp-content/plugins`.

 Further investigation revealed that the cause is to do with parent
 directory extraction in the `plugin_basename` method.

 Attached is a patch that adds a null check to the for loop that makes
 this Notice go away.

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Ticket URL: <https://core.trac.wordpress.org/ticket/27934>
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