在循环PHP外使用循环变量

Question

This is probably very simple but I cannot figure it out and my searches have come up blank.

Here is what I have in mind:

<?php

$var1 = 0.0;
for ($i=1;$i<10;$i++){
    $var1 = $var1 + $i;
}
echo $var1[4]; // This would give 0, I believe.
?>

I hope my example made it clear what I'm trying to do, and I'm sure there is a simple solution, I just unfortunately cannot find it.

Thanks, Sam

Answer 1

<?php
  $arr = array();
  for ($i = 1; $i < 10; $i++){
      $arr[$i - 1] = $i;
  }
  echo $arr[4]; // This would give 5.
?>

Answer 2

You're not changing the value of $i in your loop, which would cause it to go on forever, I'm afraid. Also, you define $var1 as a number, but then you're trying to access it as though it were an array.