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Fix PHP 8.1 "strlen(null)" exception opening a File overlay (Lightbox comment frame)
Summary: The error was caused by the overlay lightbox, since it gives the possibility to share a comment on any file in any general Remarkup text, but that comment textarea is indeed empty as default. `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. ``` EXCEPTION: (RuntimeException) strlen(): Passing null to parameter #1 ($string) of type string is deprecated at [<arcanist>/src/error/PhutilErrorHandler.php:261] arcanist(head=master, ref.master=97e163187418), phorge(head=T15498, ref.master=a25af8ccef69, ref.T15498=a25af8ccef69) #0 <#2> PhutilErrorHandler::handleError(integer, string, string, integer) called at [<phorge>/src/applications/files/controller/PhabricatorFileLightboxController.php:23] ``` Closes T15498 Test Plan: Visit a blog post with a file/image dropped in the content and click on the thumbnail. No error overlay dialog is displayed anymore. Reviewers: O1 Blessed Committers, valerio.bozzolan Reviewed By: O1 Blessed Committers, valerio.bozzolan Subscribers: speck, tobiaswiese, valerio.bozzolan, Matthew, Cigaryno Maniphest Tasks: T15498 Differential Revision: https://we.phorge.it/D25310
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@ -20,7 +20,7 @@ final class PhabricatorFileLightboxController
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return new Aphront404Response();
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}
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if (strlen($comment)) {
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if (phutil_nonempty_string($comment)) {
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$xactions = array();
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$xactions[] = id(new PhabricatorFileTransaction())
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->setTransactionType(PhabricatorTransactions::TYPE_COMMENT)
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