Close PHP tags in tests

Closes GH-12422

[skip ci] Skip dl tests on asan

These tests fail intermittently on ASAN on GitHub actions. We cannot reproduce
this locally.

Do not optimize out ini_get() when the entry does not exist during compilation (#8507)

The entry may exist later if dl is enabled

Fixes GH-8466

Fix unregistering ini entries of dynamically loaded extension (#8435)

Fixes GH-8185