While循环PHP

Question

why this code is output of 8?

<?php
    $i = 1;
    while ($i <= 7) {
        $i++;
    }
  echo "The value is $i <br />";
?>

but when you put this code on open and close parenthesis
echo $i;

the output is

12345678

Please Explain how.. Thanks!

Answer 1

I'm struggling to understand what you mean by:-

but when you put this on open and close parenthesis "echo "

With that said however I can certainly help explain why the output is 8.

Your counter starts at 1 ($i = 1). You then run a while loop that checks if the value of your counter is less than or equal to 7. You're incrementing the counter by 1 on each iteration of the loop.

When $i equals 7 the loop runs again (<=); $i is incremented to 8.