Returns an array that corresponds to the fetched row, or FALSE if there are no more rows.
注: 本函数仅适用于 Sybase 的 CT 库接口，而不适用于 DB 库。
sybase_fetch_assoc() is a version of sybase_fetch_row() that uses column names instead of integers for indices in the result array. Columns from different tables with the same names are returned as name, name1, name2, ..., nameN.
An important thing to note is that using sybase_fetch_assoc() is NOT significantly slower than using sybase_fetch_row(), while it provides a significant added value.