This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide. Alternatives to this function include:
Although this MySQL extension is compatible with MySQL 4.1.0 and greater, it doesn't support the extra functionality that these versions provide. For that, use the MySQLi extension.
If you would like to install the mysql extension along with the mysqli extension you have to use the same client library to avoid any conflicts.
[DIR] is the path to the MySQL client
library files (headers and libraries),
which can be downloaded from
Table 7.21 ext/mysql compile time support matrix
|PHP Version||Default||Configure Options: mysqlnd||Configure Options: ||Changelog|
|4.x.x||libmysqlclient||Not Available||MySQL enabled by default, MySQL client libraries are bundled|
|5.0.x, 5.1.x, 5.2.x||libmysqlclient||Not Available||MySQL is no longer enabled by default, and the MySQL client libraries are no longer bundled|
|5.3.x||libmysqlclient||mysqlnd is now available|
|5.4.x||mysqlnd||mysqlnd is now the default|
MySQL is no longer enabled by default, so the
php_mysql.dll DLL must be enabled
php.ini. Also, PHP needs
access to the MySQL client library. A file named
libmysql.dll is included in the Windows
PHP distribution and in order for PHP to talk to MySQL this
file needs to be available to the Windows systems
PATH. See the FAQ titled
do I add my PHP directory to the
Windows" for information on how to do this.
libmysql.dll to the
Windows system directory also works (because the system
directory is by default in the system's
PATH), it's not recommended.
As with enabling any PHP extension (such as
php_mysql.dll), the PHP directive
should be set to the directory where the PHP extensions are
located. See also the
Windows Installation Instructions. An example
extension_dir value for PHP 5 is
If when starting the web server an error similar to the
"Unable to load dynamic
library './php_mysql.dll'", this
libmysql.dll cannot be found by the
Crashes and startup problems of PHP may be encountered when loading this extension in conjunction with the recode extension. See the recode extension for more information.
If you need charsets other than latin (default), you have to install external (not bundled) libmysqlclient with compiled charset support.