mysqli-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.

    MySQLi Configuration Options
    Name Default Changeable Changelog
    mysqli.allow_local_infile “0” PHP_INI_SYSTEM Available as of PHP 5.2.4. Before PHP 7.2.16 and 7.3.3 the
    default was “1”.
    mysqli.allow_persistent “1” PHP_INI_SYSTEM Available as of PHP 5.3.0.
    mysqli.max_persistent “-1” PHP_INI_SYSTEM Available as of PHP 5.3.0.
    mysqli.max_links “-1” PHP_INI_SYSTEM  
    mysqli.default_port “3306” PHP_INI_ALL  
    mysqli.default_socket NULL PHP_INI_ALL  
    mysqli.default_host NULL PHP_INI_ALL  
    mysqli.default_user NULL PHP_INI_ALL  
    mysqli.default_pw NULL PHP_INI_ALL  
    mysqli.reconnect “0” PHP_INI_SYSTEM  
    mysqli.rollback_on_cached_plink TRUE PHP_INI_SYSTEM Available as of PHP 5.6.0.

    For further details and definitions of the
    preceding PHP_INI_* constants, see the chapter on configuration
    changes
    .

    Here’s a short explanation of the configuration
    directives.

    mysqli.allow_local_infile integer

    Allow accessing, from PHP’s perspective, local
    files with LOAD DATA statements

    mysqli.allow_persistent integer

    Enable the ability to create persistent connections
    using mysqli_connect().

    mysqli.max_persistent integer

    Maximum of persistent connections that can be made.
    Set to 0 for unlimited.

    The maximum number of MySQL connections per
    process.

    mysqli.default_port integer

    The default TCP port number to use when connecting
    to the database server if no other port is specified. If no default
    is specified, the port will be obtained from the
    MYSQL_TCP_PORT environment variable, the
    mysql-tcp entry in /etc/services or the compile-time
    MYSQL_PORT constant, in that order. Win32 will only use
    the MYSQL_PORT constant.

    mysqli.default_socket string

    The default socket name to use when connecting to a
    local database server if no other socket name is specified.

    mysqli.default_host string

    The default server host to use when connecting to
    the database server if no other host is specified. Doesn’t apply in
    safe
    mode
    .

    mysqli.default_user string

    The default user name to use when connecting to the
    database server if no other name is specified. Doesn’t apply in
    safe
    mode
    .

    mysqli.default_pw string

    The default password to use when connecting to the
    database server if no other password is specified. Doesn’t apply in
    safe
    mode
    .

    mysqli.reconnect integer

    Automatically reconnect if the connection was
    lost.

    Note: This
    php.ini setting is ignored by the
    mysqlnd driver.

    If this option is enabled, closing a persistent
    connection will rollback any pending transactions of this
    connection before it is put back into the persistent connection
    pool. Otherwise, pending transactions will be rolled back only when
    the connection is reused, or when it is actually closed.

    Users cannot set MYSQL_OPT_READ_TIMEOUT
    through an API call or runtime configuration setting. Note that if
    it were possible there would be differences between how
    libmysqlclient and streams would interpret the value of
    MYSQL_OPT_READ_TIMEOUT.