[wp-trac] [WordPress Trac] #31392: Undefined function error on mu-plugin during update/upgrade

[WordPress Trac]

#31392: Undefined function error on mu-plugin during update/upgrade
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 Reporter:  jadpm            |       Owner:
     Type:  defect (bug)     |      Status:  new
 Priority:  normal           |   Milestone:  Awaiting Review
Component:  Upgrade/Install  |     Version:  trunk
 Severity:  normal           |  Resolution:
 Keywords:                   |     Focuses:
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Comment (by agm65):

 Related ?  http://wordpress.stackexchange.com/questions/67634/use-wp-init-
 hook-to-call-other-hooks

   "Use wp_loaded instead. That runs after init and after ms_site_check()
 was called. This way you avoid to run your plugin on an invalid sub site
 in a multi-site installation. Everything else is the same."

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Ticket URL: <https://core.trac.wordpress.org/ticket/31392#comment:1>
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