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Fix PHP 8.1 "strlen(null)" exception when received email lacks From header
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Authored by aklapper on Mar 31 2024, 11:54.
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Details

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/metamta/storage/PhabricatorMetaMTAReceivedMail.php:527]

Closes T15767

Test Plan

See T15767

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