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.
Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /home/phd/phabricator/src/applications/diffusion/query/rawdiff/DiffusionGitRawDiffQuery.php on line 38
Closes T15399
