mysqlnd-ms-php-configuration-1

  • Installing/Configuring
  • Runtime Configuration

  • Runtime Configuration
  • Runtime Configuration

    Runtime Configuration

    The behaviour of these functions is affected by
    settings in php.ini.

    Mysqlnd_ms Configure Options
    Name Default Changeable Changelog
    mysqlnd_ms.enable 0 PHP_INI_SYSTEM
    mysqlnd_ms.force_config_usage 0 PHP_INI_SYSTEM
    mysqlnd_ms.ini_file “” PHP_INI_SYSTEM
    mysqlnd_ms.config_file “” PHP_INI_SYSTEM
    mysqlnd_ms.collect_statistics 0 PHP_INI_SYSTEM
    mysqlnd_ms.multi_master 0 PHP_INI_SYSTEM
    mysqlnd_ms.disable_rw_split 0 PHP_INI_SYSTEM

    Here’s a short explanation of the configuration
    directives.

    mysqlnd_ms.enable integer

    Enables or disables the plugin. If disabled, the
    extension will not plug into mysqlnd to proxy internal mysqlnd C API calls.

    mysqlnd_ms.force_config_usage integer

    If enabled, the plugin checks if the host (server)
    parameters value of any MySQL connection attempt, matches a section
    name from the plugin configuration file. If not, the connection
    attempt is blocked.

    This setting is not only useful to restrict PHP to
    certain servers but also to debug configuration file problems. The
    configuration file validity is checked at two different stages. The
    first check is performed when PHP begins to handle a web request.
    At this point the plugin reads and decodes the configuration file.
    Errors thrown at this early stage in an extensions life cycle may
    not be shown properly to the user. Thus, the plugin buffers the
    errors, if any, and additionally displays them when establishing a
    connection to MySQL. By default a buffered startup error will emit
    an error of type E_WARNING. If force_config_usage
    is set, the error type used is E_RECOVERABLE_ERROR.

    Please, see also configuration file debugging notes.

    mysqlnd_ms.ini_file string

    Plugin specific configuration file. This setting
    has been renamed to mysqlnd_ms.config_file in version
    1.4.0.

    mysqlnd_ms.config_file string

    Plugin specific configuration file. This setting
    superseeds mysqlnd_ms.ini_file since 1.4.0.

    mysqlnd_ms.collect_statistics integer

    Enables or disables the collection of statistics.
    The collection of statistics is disabled by default for performance
    reasons. Statistics are returned by the function mysqlnd_ms_get_stats().

    mysqlnd_ms.multi_master integer

    Enables or disables support of MySQL multi master
    replication setups. Please, see also supported
    clusters
    .

    mysqlnd_ms.disable_rw_split integer

    Enables or disables built-in read write
    splitting.

    Controls whether load balancing and lazy connection
    functionality can be used independently of read write splitting. If
    read write splitting is disabled, only servers from the master list
    will be used for statement execution. All configured slave servers
    will be ignored.

    The SQL hint MYSQLND_MS_USE_SLAVE will not
    be recognized. If found, the statement will be redirected to a
    master.

    Disabling read write splitting impacts the return
    value of mysqlnd_ms_query_is_select(). The function
    will no longer propose query execution on slave servers.

    Note: Multiple master
    servers

    Setting mysqlnd_ms.multi_master=1 allows
    the plugin to use multiple master servers, instead of only the
    first master server of the master list.

    Please, see also supported
    clusters
    .