Fix PHP 8.1 "strlen(null)" exceptions adding an OAuth provider
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Authored by aklapper on Mon, Apr 15, 15:00.

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T15786: PHP 8.1 "strlen(null)" exceptions adding an OAuth provider

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/auth/provider/PhabricatorOAuth2AuthProvider.php:140]

ERROR 8192: strlen(): Passing null to parameter #1 ($string) of type string is deprecated at [/var/www/html/phorge/phorge/src/applications/auth/provider/PhabricatorOAuth2AuthProvider.php:155]

ERROR 8192: strlen(): Passing null to parameter #1 ($string) of type string is deprecated at [/var/www/html/phorge/phorge/src/applications/auth/provider/PhabricatorOAuth2AuthProvider.php:165]

Closes T15786

Test Plan

Set up any Auth provider which uses OAuth2 and check the error console.