How to count inverse with for in php?

Question

My Problem: I want to count inverse in the for loop.

This is the opposite of what I want to do:

for($i=1;$i<=10;$i++){
          


        

Answer 1

If you take the for as you wrote and just replace $i++ with $i--, the value of $i will be decremented with every iteration (1, 0, -1, -2, etc.) and the looping condition $i<=10 is always true.

If you want to count backwards, you also need to change the other parts (initialization and looping condition):

for ($i=10; $i>=1; $i--){
    echo $i;
}

Or you take the last and subtract the current value from it and add the first value to it:

for ($first=1, $i=$first, $last=10; $i<=$last; $i++){
    echo $last - $i + $first;
}