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Other changes to extensions

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A number of constants marked obsolete in the cURL library have now been removed:

cURL

A number of constants marked obsolete in the cURL library have now been removed:

CURLOPT_CLOSEPOLICY
CURLCLOSEPOLICY_CALLBACK
CURLCLOSEPOLICY_LEAST_RECENTLY_USED
CURLCLOSEPOLICY_LEAST_TRAFFIC
CURLCLOSEPOLICY_OLDEST
CURLCLOSEPOLICY_SLOWEST

OCI8

Support for implicit result sets for Oracle Database 12c has been added via the new oci_get_implicit_resultset() function.
Using oci_execute($s, OCI_NO_AUTO_COMMIT) for a SELECT no longer unnecessarily initiates an internal ROLLBACK during connection close.
Added DTrace probes controlled by the --enable-dtrace configure option.
oci_internal_debug() is now a no-op.
The phpinfo() output format for OCI8 has changed.

Zip

A --with-libzip configure option has been added to use a system libzip installation. libzip version 0.11 is required, with 0.11.2 or later recommended.

MySQLi

A new mysqli.rollback_on_cached_plink option was added, which controls the rollback behavior of persistent connections.

Source: appendices/migration56/extensions.xml · from the official PHP manual (php/doc-en)