Always returns
TRUE.
odbc_free_result() only needs to
be called if you are worried about using too much memory
while your script is running. All result memory will
automatically be freed when the script is finished. But, if
you are sure you are not going to need the result data
anymore in a script, you may call
odbc_free_result(), and the memory associated with result_id will be freed.
注: If auto-commit is disabled (see odbc_autocommit()) and you call odbc_free_result() before commiting, all pending transactions are rolled back.