[wp-trac] [WordPress Trac] #43986: Disable "Install Plugin" button for PHP required version mismatch

[WordPress Trac]

#43986: Disable "Install Plugin" button for PHP required version mismatch
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 Reporter:  schlessera                           |       Owner:  (none)
     Type:  task (blessed)                       |      Status:  new
 Priority:  normal                               |   Milestone:  5.0
Component:  Plugins                              |     Version:
 Severity:  major                                |  Resolution:
 Keywords:  needs-unit-tests servehappy dev-     |     Focuses:
  feedback has-patch                             |
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Comment (by joyously):

 I think you missed my point.

 In order to keep a site working through an upgrade, the user will need to
 identify plugins to use with the new PHP version, and install them ahead
 of the upgrade so that they can be activated quickly after the upgrade.
 The goal would be to minimize the down time and effort involved in finding
 replacements. If the user has to wait until after the upgrade to install
 the replacements, there is potentially much more time that the site is not
 working.

 Additionally, there is a subtle problem with showing a warning for
 Required PHP version because it is a minimum version. The user will only
 see the warnings when his PHP version is low. So if he does the upgrade
 first, and then searches for plugin replacements, there will be no
 warnings on plugins that are written for a lower PHP version and could
 cause errors on the upgraded version, such as the ones needing
 replacement. Having the warning work in only one direction dictates that
 it is better to install the replacements before the upgrade, but this
 ticket is about making that impossible. And after the upgrade, any
 attempts to find plugins would always have some element of doubt about
 whether there is a PHP conflict (since it won't be flagged).

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Ticket URL: <https://core.trac.wordpress.org/ticket/43986#comment:61>
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