Merge branch 'PHP-8.1' into PHP-8.2

* PHP-8.1:
  Work around dl(mysqli) issue with OPcache on AppVeyor

Author: cmb69

appveyor/test_task.bat

@@ -78,6 +78,8 @@ rem set SSLEAY_CONF=
 
 rem prepare for OPcache
 if "%OPCACHE%" equ "1" set OPCACHE_OPTS=-d opcache.enable=1 -d opcache.enable_cli=1 -d opcache.protect_memory=1 -d opcache.jit_buffer_size=16M
+rem work-around for failing to dl(mysqli) with OPcache (https://github.com/php/php-src/issues/8508)
+if "%OPCACHE%" equ "1" set OPCACHE_OPTS=%OPCACHE_OPTS% -d extension=mysqli
 
 rem prepare for enchant
 mkdir C:\usr\local\lib\enchant-2