Other Changes to Extensions
Enchant
The enchant extension now uses libenchant-2 by default when available. libenchant version 1 is
still supported but is deprecated and could be removed in the future.
JSON
The JSON extension cannot be disabled anymore and is always an integral part of any PHP build,
similar to the date extension.
MBString
The Unicode data tables have been updated to version 13.0.0.
LibXML
The minimum required libxml version is now 2.9.0. This means that external entity loading is now
guaranteed to be disabled by default, and no extra steps need to be taken to protect against XXE
attacks.
PGSQL / PDO PGSQL
The PGSQL and PDO PGSQL extensions now require at least libpq 9.1.