This format matches against null bytes, and prevents the test expectation from being interpreted as binary data. bless_tests.php will automatically replace \0 with %0 as well.
Closes GH-5759
Remove most of the `===DONE===` tags and its variations. Keep `===DONE===` if the test output otherwise becomes empty. Closes GH-4872.
This was deprecated in PHP 7.2 as part of https://wiki.php.net/rfc/deprecations_php_7_2.
# Some of the updated tests were to make them sync with 5.3 although they don't run on trunk anymore