:sig
String mysql_error(MySQL* m)

:params
m : pointer to a MySQL connection struct
return value : MySQL error message (if present, otherwise empty string)

:desc
Returns the last error message from a connection to a MySQL server.

:see
>mysql

:related
**PHP:** Modern PHP database access through `mysqli_*` or PDO methods rather than the old `mysql_*` family
**JavaScript / Node.js:** Node database clients such as `mysql2`, query builders, or ORM adapters