Runtime Configuration
The behaviour of these functions is affected by settings in php.ini.
Name | Default | Changeable | Changelog |
---|---|---|---|
mysqli.allow_local_infile | "0" | PHP_INI_SYSTEM | Before PHP 7.2.16 and 7.3.3 the default was "1". |
mysqli.local_infile_directory | PHP_INI_SYSTEM | Available as of PHP 8.1.0. | |
mysqli.allow_persistent | "1" | PHP_INI_SYSTEM | |
mysqli.max_persistent | "-1" | PHP_INI_SYSTEM | |
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 | "0" | PHP_INI_SYSTEM |
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
int -
Allow accessing, from PHP's perspective, local files with LOAD DATA statements
-
mysqli.local_infile_directory
string -
Allows restricting LOCAL DATA loading to files located in this designated directory.
-
mysqli.allow_persistent
int -
Enable the ability to create persistent connections using mysqli_connect().
-
mysqli.max_persistent
int -
Maximum of persistent connections that can be made. Set to 0 for unlimited.
-
mysqli.max_links
int -
The maximum number of MySQL connections per process.
-
mysqli.default_port
int -
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, themysql-tcp
entry in /etc/services or the compile-timeMYSQL_PORT
constant, in that order. Win32 will only use theMYSQL_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.
-
mysqli.default_user
string -
The default user name to use when connecting to the database server if no other name is specified.
-
mysqli.default_pw
string -
The default password to use when connecting to the database server if no other password is specified.
-
mysqli.reconnect
int -
Automatically reconnect if the connection was lost.
Note: This php.ini setting is ignored by the mysqlnd driver.
-
mysqli.rollback_on_cached_plink
bool -
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
.