(PHP 3 >= 3.0.3, PHP 4, PHP 5)
mssql_field_length -- Get the length of a field
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.