(PHP 4 >= 4.0.6, PHP 5)
fbsql_field_seek — Set result pointer to a specified field offset
Seeks to the specified field offset. If the next call to fbsql_fetch_field() doesn't include a field offset, the field offset specified in fbsql_field_seek() will be returned.
A result identifier returned by fbsql_query() or fbsql_db_query().
The numerical offset of the field. The field index starts at 0.
如果成功则返回 TRUE，失败则返回 FALSE。