MySQL PHP API  /  MySQL Functions (PDO_MYSQL)  /  PDO_MYSQL DSN

4.1 PDO_MYSQL DSN

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  • PDO_MYSQL DSN

    Connecting to MySQL databases

Description

The PDO_MYSQL Data Source Name (DSN) is composed of the following elements:

DSN prefix

The DSN prefix is mysql:.

host

The hostname on which the database server resides.

port

The port number where the database server is listening.

dbname

The name of the database.

unix_socket

The MySQL Unix socket (shouldn't be used with host or port).

charset

The character set. See the character set concepts documentation for more information.

Examples

Example 4.2 PDO_MYSQL DSN examples

The following example shows a PDO_MYSQL DSN for connecting to MySQL databases:

mysql:host=localhost;dbname=testdb

More complete examples:

mysql:host=localhost;port=3307;dbname=testdb
mysql:unix_socket=/tmp/mysql.sock;dbname=testdb


Notes

Unix only:

When the host name is set to "localhost", then the connection to the server is made thru a domain socket. If PDO_MYSQL is compiled against libmysqlclient then the location of the socket file is at libmysqlclient's compiled in location. If PDO_MYSQL is compiled against mysqlnd a default socket can be set thru the pdo_mysql.default_socket setting.