Had no idea PHP has cheat codes like this

It shouldn't work with floats. If floats ar needed return must be changed from int to float

This won't work with floats..

I can't get it:

//1..9 = (9 * 1) = 9

//10..99 = (100 * 2) = 200

//100..999 = (1_000 * 3) = 3_000

//1000..9999 = (10_000 * 4) = 40_000

//10_000..99_999 = (100_000 * 5) = 500_000

//100_000..999_999 = (1_000_000 * 4) = 6_000_000

//1_000_000..9_999_999 = (10_000_000 * 7) = 70_000_000

//10_000_000..36_123_011 = (26123011 * 8) = 208_984_088

//sum: 208_984_088 + 70_000_000 + 6_000_000 + 500_000 + 40_000 + 3_000 + 200 + 9 = 285_527_297

//And solution is telling 277_872_985

What am I doing wrong?

it is great solution!

man i should use google

If you have set declare(strict_types=1); php would throw an error (because you try to return string as int), if this declaration is missing it will convert string to int.

Nonone should use PHP <8.0 in 2022 ;)

Ugh. I way overthought this one.

Nice solution, however I would like to note it only works on PHP 8.0

Nice quick solution, but slow on large numbers. :)

Duplicate.

I've changed assert types, should be fine now, thanks

Expected and actual values in test message are flipped.