Describe el tipo de conexi贸n en uso, incluyendo el nombre del equipo servidor anfitri贸n.
The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect() is assumed. If no such link is found, it will try to create one as if mysql_connect() was called with no arguments. If by chance no connection is found or established, an E_WARNING level warning is generated.
Devuelve una cadena que describe el tipo de conexi贸n MySQL en uso, o FALSE si ocurre un error.