fieldname & its data

Hi, So far I have been using mysql_fetch_array to get the data, and use it in a loop to print all of it. I was wondering (cause I couldn't find it in the manual - although you have to consider that I have a printed out version and its very hard to search without the index!) if you can get the data by somehow using the fieldname... I hope you know what I mean... getting the data not by looping for each field, but just by using the fieldname somehow. gracias.