This primarily fixes a bug introduced in 6d46d62577 for PHPC-359, since we convert tag sets from arrays to objects to ensure proper BSON serialization. Not only was the array mutation visible to calling contexts, but a crash could occur if the array was immutable due to OPcache.
For Manager's $driverOptions, a comment in 1060cb8ba4 for PHPC-433 indicated that we should have separated its zval due to possible modification, but the appropriate zend_parse_parameters() flag was never used.
When a numeric array was encoded to BSON, the hash's apply counter was incremented and decremented irrespective of whether apply protection was enabled. This was not compatible with immutable arrays, which may be created by OPcache. We now consult ZEND_HASH_APPLY_PROTECTION() whenever an apply counter might be modified.
Previously, object_to_bson() incremented the apply counter when converting a MongoDB\BSON\Type instance. Associative arrays and other objects were not protected. This patch adds recursion checking for those types.
Since PHP7 already has macros for working with the apply counter, this patch adds equivalent macros for PHP 5.x.
The expected output of bson-javascript-jsonserialize-004.phpt is logically incorrect because of an outstanding bug where Javascript objects are always serialized to BSON code types, irrespective of their scope property. That issue will be fixed by PHPC-838.
Changing "s" to "z" in zend_parse_parameters() allows integers to be accepted in strict types mode. If all necessary parameters are integers, we can also skip conversion to a string and back to a 64-bit integer.
bson_ascii_strtoll() will support range checking in libbson 1.5.0 (CDRIVER-1377), so there is no longer any benefit of using _atoi64() on Windows. This will make parsing consistent across both platforms, since _atoi64() does not report errors for non-integer strings (e.g. "1.2").
This adds an options array to the ReadPreference constructor, which accepts a maxStalenessMS option. The option is also exposed via a getter method and in debug output.
Jeremy Mikola