Description
int 
mssql_field_length ( resource result [, int offset])
	   This function returns the length of field no. offset in 
	   result result. If offset is omitted,
	   the current field is used.
	 
Note to Win32 Users: 
         Due to a limitation in the underlying API used by PHP (MS DbLib C API), 
         the length of VARCHAR fields is limited to 255. If 
         you need to store more data, use a TEXT field instead.