Fix PHP 8.1 "strlen(null)" exceptions editing existing Dashboard query panel with no query defined
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Authored by aklapper on Thu, Apr 18, 17:50.

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T15791: PHP 8.1 "strlen(null)" exceptions editing existing Dashboard query panel with no query defined

Summary

strlen() was used in Phabricator to check if a generic value is a non-empty string.
This behavior is deprecated since PHP 8.1. Phorge adopts phutil_nonempty_string() as a replacement.

Note: this may highlight other absurd input values that might be worth correcting
instead of just ignoring. If phutil_nonempty_string() throws an exception in your
instance, report it to Phorge to evaluate and fix that specific corner case.

ERROR 8192: strlen(): Passing null to parameter #1 ($string) of type string is deprecated at [/var/www/html/phorge/phorge/src/applications/dashboard/editfield/PhabricatorDashboardQueryPanelQueryEditField.php:41]

ERROR 8192: strlen(): Passing null to parameter #1 ($string) of type string is deprecated at [/var/www/html/phorge/phorge/src/applications/dashboard/editfield/PhabricatorDashboardQueryPanelQueryEditField.php:59]

Closes T15791

Test Plan

Successfully create a Dashboard query panel searching for "Diffusion Raw Commits" (which has no Query defined per T15790) and try to edit it afterwards under PHP 8.1 or later.