[wp-trac] [WordPress Trac] #54952: 5.9 breaks auth_redirect?

Thu Jan 27 14:15:53 UTC 2022

#54952: 5.9 breaks auth_redirect?
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 Reporter:  EPinci        |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  General       |     Version:  5.9
 Severity:  normal        |  Resolution:
 Keywords:  close         |     Focuses:
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Changes (by swissspidy):

 * keywords:   => close

Comment:

 I am quite surprised that this used to work for you. Because from a
 technical perspective it's not possible.

 Shortcodes are used in post content. Post content is rendered after lots
 of HTML content (e.g. the `<head>` of your page) has already rendered. At
 this point, HTTP headers are already sent by PHP.

 At this point it's simply not possible to trigger redirects, hence the
 warning.

 If you need t trigger redirects, you need to do this by hooking in some
 early action and not do that in a shortcode.

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Ticket URL: <https://core.trac.wordpress.org/ticket/54952#comment:1>
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