[wp-trac] [WordPress Trac] #46047: Rename shutdown handler constant to allow it to be used for disabling it altogether

[WordPress Trac]

#46047: Rename shutdown handler constant to allow it to be used for disabling it
altogether
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 Reporter:  schlessera            |       Owner:  (none)
     Type:  enhancement           |      Status:  new
 Priority:  normal                |   Milestone:  5.1
Component:  Bootstrap/Load        |     Version:  trunk
 Severity:  normal                |  Resolution:
 Keywords:  has-patch servehappy  |     Focuses:
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Comment (by flixos90):

 Regardless of the name we choose, I suggest to add the `WP_DISABLE_*`
 constant as an entirely new constant, in addition to
 `WP_EXECUTION_SUCCEEDED`. While they are closely related, semantically
 they are not the same:

 * One flags that WordPress has successfully loaded so that the shutdown
 handler should not run.
 * One disables the shutdown handler entirely.

 The new `WP_DISABLE_*` would be purely for definition in `wp-config.php`,
 and I suggest to put the check for it into the
 `wp_register_premature_shutdown_handler()` function: If it is defined and
 true, don't even register any shutdown handler. This separates the two
 concerns and also allows mitigating the problem in #46038 easily, for
 example in a development setup.

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Ticket URL: <https://core.trac.wordpress.org/ticket/46047#comment:4>
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