No cache version.

Caching disabled. Default setting for this page:enabled (code DEF204)
If the display is too slow, you can disable the user mode to view the cached version.

Rechercher dans le manuel MySQL

28.7.17.3 mysql_load_plugin()

Contents

struct st_mysql_client_plugin *mysql_load_plugin(MYSQL *mysql, const char *name, int type, int argc, ...)

Description

Loads a MySQL client plugin, specified by name and type. An error occurs if the type is invalid or the plugin cannot be loaded.

It is not possible to load multiple plugins of the same type. An error occurs if you try to load a plugin of a type already loaded.

Specify the parameters as follows:

  • mysql: A pointer to a MYSQL structure. The plugin API does not require a connection to a MySQL server, but this structure must be properly initialized. The structure is used to obtain connection-related information.

  • name: The name of the plugin to load.

  • type: The type of plugin to load, or −1 to disable type checking. If type is not −1, only plugins matching the type are considered for loading.

  • argc: The number of following arguments (0 if there are none). Interpretation of any following arguments depends on the plugin type.

Another way to cause plugins to be loaded is to set the LIBMYSQL_PLUGINS environment variable to a list of semicolon-separated plugin names. For example: 

shell> export LIBMYSQL_PLUGINS="myplugin1;myplugin2"

Plugins named by LIBMYSQL_PLUGINS are loaded when the client program calls mysql_library_init(). No error is reported if problems occur loading these plugins.

The LIBMYSQL_PLUGIN_DIR environment variable can be set to the path name of the directory in which to look for client plugins. This variable is used in two ways:

  • During client plugin preloading, the value of the --plugin-dir option is not available, so client plugin loading fails unless the plugins are located in the hardwired default directory. If the plugins are located elsewhere, LIBMYSQL_PLUGIN_DIR environment variable can be set to the proper directory to enable plugin preloading to succeed.

  • For explicit client plugin loading, the mysql_load_plugin() and mysql_load_plugin_v() C API functions use the LIBMYSQL_PLUGIN_DIR value if it exists and the --plugin-dir option was not given. If --plugin-dir is given, mysql_load_plugin() and mysql_load_plugin_v() ignore LIBMYSQL_PLUGIN_DIR.

Contents Haut

Return Values

A pointer to the plugin if it was loaded successfully. NULL if an error occurred.

Contents Haut

Errors

To check for errors, call the mysql_error() or mysql_errno() function. See Section 28.7.7.15, “mysql_error()”, and Section 28.7.7.14, “mysql_errno()”.

Contents Haut

Example
MYSQL mysql;

if(!mysql_load_plugin(&mysql, "myplugin",
                      MYSQL_CLIENT_AUTHENTICATION_PLUGIN, 0))
{
    fprintf(stderr, "Error: %s\n", mysql_error(&mysql));
    exit(-1);
}

Contents Haut

See Also

See also Section 28.7.17.3, “mysql_load_plugin()”, Section 28.7.7.15, “mysql_error()”, Section 28.7.7.14, “mysql_errno()”.


Find a PHP function

Document created the 26/06/2006, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/mysql-rf-mysql-load-plugin.html

The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.

References

  1. View the html document Language of the document:en Manuel MySQL : https://dev.mysql.com/

These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.

Contents Haut