3.8.33 mysqli::options, mysqli

Object oriented style

public bool mysqli::options(int option,
                            mixed value);

Procedural style

bool mysqli_options(mysqli link,
                    int option,
                    mixed value);

Used to set extra connect options and affect behavior for a connection.

This function may be called multiple times to set several options.

link

Procedural style only: A link identifier returned by mysqli_connect or mysqli_init

option

The option that you want to set. It can be one of the following values:

Table 3.10 Valid options

Name	Description
`MYSQLI_OPT_CONNECT_TIMEOUT`	Connection timeout in seconds
`MYSQLI_OPT_READ_TIMEOUT`	Command execution result timeout in seconds. Available as of PHP 7.2.0.
`MYSQLI_OPT_LOCAL_INFILE`	Enable/disable use of `LOAD LOCAL INFILE`
`MYSQLI_INIT_COMMAND`	Command to execute after when connecting to MySQL server
`MYSQLI_SET_CHARSET_NAME`	The charset to be set as default.
`MYSQLI_READ_DEFAULT_FILE`	Read options from named option file instead of `my.cnf` Not supported by mysqlnd.
`MYSQLI_READ_DEFAULT_GROUP`	Read options from the named group from `my.cnf` or the file specified with `MYSQL_READ_DEFAULT_FILE`. Not supported by mysqlnd.
`MYSQLI_SERVER_PUBLIC_KEY`	RSA public key file used with the SHA-256 based authentication.
`MYSQLI_OPT_NET_CMD_BUFFER_SIZE`	The size of the internal command/network buffer. Only valid for mysqlnd.
`MYSQLI_OPT_NET_READ_BUFFER_SIZE`	Maximum read chunk size in bytes when reading the body of a MySQL command packet. Only valid for mysqlnd.
`MYSQLI_OPT_INT_AND_FLOAT_NATIVE`	Convert integer and float columns back to PHP numbers. Only valid for mysqlnd.
`MYSQLI_OPT_SSL_VERIFY_SERVER_CERT`	Whether to verify server certificate or not.

value

The value for the option.

Returns true on success or false on failure.

Note

MySQLnd always assumes the server default charset. This charset is sent during connection hand-shake/authentication, which mysqlnd will use.

Libmysqlclient uses the default charset set in the my.cnf or by an explicit call to mysqli_options prior to calling mysqli_real_connect, but after mysqli_init.