Reverse a string with php

Question

I am trying to find a way to reverse a string, I\'ve seen alternatives but i wanted to to it this way thinking outside the box and not using anyone else\'s code as an altern

Answer 1

$string = 'mystring';
$length = strlen($string);

for ($i = $length; $i > 0; $i--){
echo $string[$i-1];
}

OUTPUT: gnirtsym