APC saw its last release in 2012.
It has been discontinued as PHP 5.5+ includes OpCache.
It has been superseded by APCu for object caching.
See https://pecl.php.net/package-info.php?package=APC
Phorge requires PHP 7.2.
Thus remove any references to APC.
Also note that "If APCu is installed, it reports that APC is installed" does not hold true anymore: In PHP 8.3, "php -m" correctly reports "apcu".