Hello everyone, please help the younger brother to see how the value of this variable to get it

Hello everyone, please help the younger brother to see how to get the value of this variable
Now there is a record in the database, the value of the field "ZhiDuan1" is "Tianqi".
The next record, the value of the field "ZhiDuan1" is "xinqing".
$rs->zhiduan1;

A $tianqi variable is declared in the Web page and is assigned a "Sunny Day",
A $xinqing variable, and assigned a value of "happy",

Now I don't want to use it directly.
Echo $TianQi;
Show "Sunny Days" on the page,

I want to show "Sunny" Through "$rs->zhiduan1",
This makes it easy for $rs->zhiduan1 to show "Happy" when the next record value becomes "xinqing".

How would you like to write code?

------Solution--------------------
The data is written to the database before it is read. Is that what it means?

------Solution--------------------
It's okay to have a field out of the database.
Whether through $rs->zhiduan1 or echo $var
It's not all the same, as long as these two variables come from the database.
In addition to what you said above, on sunny days, you have to have other conditions, such as
The latest weather conditions can be the one with the largest ID
Or the weather of number 3rd, on condition that timeflag=3 is like this.
Or take out an array who knows which one to use, maybe a number of sunny days.

------Solution--------------------
echo ${$rs->zhiduan1};

