Why is it zero?

Question

PHP

There is a code: $hold = 1000 $user_info['procent_second`'] = 2 $new should be 20, but it turns out to be 0. Why?
$new = $hold*$user_info['procent_second`']/100

Answer 1

And now the correct answer, not in the style of kindergarten, "oh, you got a little cake from the wrong mold" By adding this magic line to your PHP code, you will, as if by magic, receive from PHP the answer to your question.
error_reporting(E_ALL);