MySQLi
PHP Manual

Changelog

The following changes have been made to classes/functions/methods of this extension.

VersionFunctionDescription
5.6.16mysqli::real_connectAdded the MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT flag for MySQL Native Driver
5.5.0mysqli::commitAdded flags and name parameters.
 mysqli::optionsThe MYSQLI_SERVER_PUBLIC_KEY and MYSQLI_SERVER_PUBLIC_KEY options were added.
 mysqli::rollbackAdded flags and name parameters.
5.4.0mysqli_get_cache_statsThe mysqli_get_cache_stats was removed.
5.3.4mysqli_driver::$report_modeChanging the reporting mode is now be per-request, rather than per-process.
5.3.0mysqli_get_cache_statsThe mysqli_get_cache_stats was added as stub.
 mysqli::__constructAdded the ability of persistent connections.
 mysqli::optionsThe MYSQLI_OPT_INT_AND_FLOAT_NATIVE, MYSQLI_OPT_NET_CMD_BUFFER_SIZE, MYSQLI_OPT_NET_READ_BUFFER_SIZE, and MYSQLI_OPT_SSL_VERIFY_SERVER_CERT options were added.
 mysqli::queryAdded the ability of async queries.
5.2.15mysqli_driver::$report_modeChanging the reporting mode is now be per-request, rather than per-process.

MySQLi
PHP Manual