conditional logic based on query results

[mccoding]

I run a query this will come up with 0-2 results.
I think the logic will work like this:
if $row->time == morning then display afternoon
if $row->time == afternoon then display morning
if $row->time == both then kickout because its unavailable

But how do I get around that there this:
if there are two rows being morning and afternoon?

If both or morning and afternoon are assigned they will run simliar code.

How should I structure my conditional statements based on the above?

[mccoding]

I cheated and used mysql_rum_rows.
Because there wereonly 3 options I ran through a case statement. Based on how many and another variable it was very easy.
case 0
do something
case 1
another case statement
do something
case 2
do something

I was getting very confused because I was embedding if statements. when I switched to case it was very clear and organized.
hooray for me